Showing posts with label Pest Control. Show all posts

Have any plan of what percentage chemicals are introduced into our environments since WWII? A half-decade agone, the count* was over eighty,000. Some square measure used for large atomic number 47, some square measure in medicines and processed foods, toys and home items, and a few of them square measure within the air and water.

Industrial chemicals, most of that square measure barely tested by the those that build them, square measure omnipresent. Most toxicities square measure typically not complete till huge adverse health reports square measure created. we are the guinea pigs, the canaries within the mine for the chemical firms that lie all the thanks to the bank.

The Environmental Protection Agency (EPA), what is left of it, is short-handed and engulfed by the constant barrage of freshly factory-made chemicals. they don't seem to be nonetheless held with the older chemicals that are in industrial use for many years. The higher management positions at the Food and Drug Administration, executive department and Environmental Protection Agency square measure corrupted by business lobbyists and former business insiders WHO make the most of the revolving door system that promotes favoritism at the upper levels of business and government.

Canadian government to review 23 pesticides banned in EuropeHere's a "legal" trick that chemical firms use to cover their products' toxicity. restrictive agencies solely look into the active ingredients of pesticides and herbicides. however there square measure different chemicals in a very product that square measure meant to spice up the active ingredient. the precise formulas square measure withheld as proprietary trade secrets. The Uniform Trade Secrets Act supports this secrecy while not reference to health or ecological implications. company profits trump public welfare de jure.

For example, Monsanto's Roundup contains glyphosate as its active ingredient, thus that is all that gets tested. Since it's in many herbicides already, Roundup gets rubber-stamp approval while not reference to the key "inert" merchandise that are literally adjuvants.

However, there has been another polemic study by the parents that brought US those rats with gross tumors when their long-run exposure to GMO corn and Roundup.

Seralini and also the boys within the research lab analyzed all the inert ingredients of 9 major chemicals and discovered that each one however one pesticide contained inert ingredients additional harmful than their active ingredients. Roundup was the worst.

Sometimes it is the natural action of these ingredients combined, and generally it's one or 2 alone which will be worse than the active ingredients. (GM Watch, supply below)

Canadian activists push for investigation of pesticides and herbicides employed in Canada
In August of 2013, Ecojustice filed four lawsuits strict that Health Canada examine twenty nine pesticides illegal in Europe. Canadian federal law mandates that any pesticides or herbicides illegal by even one nation of the Organization for Economic Co-operation and Development should be evaluated for safety in Canada.

At first, the tormenter Management administrative unit (PMRA) of Canada refused. then again attorneys for Ecojustice started taking part in hardball with lawsuits strict the administrative unit to fits federal law. therefore the agency united to review twenty three of the twenty nine chemicals, one amongst that could be a common weed killer anonymous  within the supply article, in all probability Roundup.

Four of the remaining six chemicals still have restricted use in Europe, and 2 don't seem to be employed in Canada. therefore the six chosen to not be reviewed stands with each side in agreement. Consequently, the PMRA requested that Ecojustice drop its proceedings, considering it superfluous and unwarranted in light-weight of their plans to review those twenty three chemicals.

Source: Natural News

Over the last 30 years, the use of pesticides has spiked around the world. People now pour 2.5 million tons of these chemicals into the environment annually, contributing to a $35 billion industry run by global corporations. To make matters worse, the more people use pesticides, the more ineffective they become.

Why are crop yields lost to insects greater than ever before, when pesticide use is at an all time high?

Take a look at the citrus greening crisis happening in places like Florida and California. Citrus greening is a disease spread by the psyllid insect. This insect contaminates citrus trees by leaving a trail of bacteria that ultimately kills the trees. Florida is currently witnessing a 10 percent reduction in produce because of this.
Problems like these exist because pesticides are killing beneficial insects, like lady beetles, that were created to feasts on pests like psyllids. By killing lady beetles, pesticides destroy a balanced ecosystem.

So are pesticides doing more harm than good?

Pesticides are ravaging the environment. Farmers and researchers are now witnessing the death of entire bee colonies because of pesticides. Billions of bees are disappearing from their natural environment, as they cannot handle the poisonous nectar they're pollinating from contaminated flowers.

Systemic pesticides use on the risePesticides are penetrating deep into plants tissues: agrinfobank.com

Some people are completely aware of pesticides' ability to disrupt the thyroid, adrenal and pituitary glands. These glands control hormones in the human body which guide the development, growth, gender, behavior, and reproductive systems.
That's why some people wash their fruit and vegetables before eating them. The sad reality is that pesticides exist not only as residue, but are also pent up and stored inside plant tissues. In fact, systemic pesticide use is on the rise. These chemicals, first used in 1998, have now spread to most of the conventional food supply. Systemic pesticides travel from the soil and are absorbed into vegetation, moving through the xylem and extending into the leaves and flowers, where they infect pollen and nectar. Four classes of pesticides have become commonplace and include imidacloprids, which are applied to vegetables like tomatoes and leafy greens. Thiamethoxam is typically used as seed "treatment" for corn, but is now applied to soil for fruit and vegetables. Clothianidin is also a seed contaminant, used on canola, cereals, sugar beets, and potatoes. Dinotefuran is either applied to soil or sprayed directly on leafy greens, including cucumber crops.

Stunning pesticide levels in USDA tests

Tests conducted by the US Department of Agriculture from 1999 to 2007 report stunning levels of systemic pesticides in conventional produce. They found that 70 percent of broccoli and 74 percent of fresh lettuce contained imidacloprid residues. Heavy levels of thiamethoxam were found in strawberries and sweet peppers.
Worse yet, the tests found imidacloprid levels of up to 550 parts per billion in eucalyptus nectar and pollen - three times the amount needed to kill honeybees!
Water droplets that exude from a plant's surface also tested positive for systemic pesticides; plants are practically bleeding out chemicals!
The Journal of Economic Entomology reports, "When bees consume guttation drops, collected from plants grown from neonicotinoid-coated seeds, they encounter death within a few minutes."
Additionally, systemic nitroguanidine pesticides can last up to 500 days or more in soil, affecting the ecosystem for up to two seasons, poisoning water, soil, worms, beetles, and bees which all play an important role in a thriving environment.

Four simple actions to make a difference

• Stop using pesticides altogether and appreciate a balanced ecosystem.
• Shop locally, but more importantly, shop organically. Put your money where your morals are.
• Realize that the government is not protecting the population from harmful chemicals. Even though they have more regulatory agencies than ever before, big government is actually permitting these disease spreading, Earth-ravaging chemicals to persist.
• Collectively make your voice heard by signing a petition. http://petitions.moveon.org/sign/ban-systemic-pesticide
Sources for this article include
http://petitions.moveon.org/sign/ban-systemic-pesticide
http://www.motherearthnews.com
http://www.panna.org/issues/food-agriculture/pesticides-on-food
http://www.organicgardeningguru.com/pesticides.html
http://www.panna.org/issues/food-agriculture/pesticides-on-food

Beneficial nematodes seek out and kill over 200 species of pest insect in the soil and will have no detrimental affect on species such as ladybugs, earth worms and other helpful beneficial insects.
BIOLOGICAL Control Of Pest Insects With Nematodes. Beneficial Nematodes naturally occur in soil and are used to control soil pest insects and whenever larvae or grubs are present. Like all of our products, it will not expose humans or animals to any health or environmental risks. Beneficial nematodes only attack soil dwelling insects and leave plants and earthworms alone. The beneficial nematodes enters the larva via mouth, anus or respiratory openings and starts to feed. This causes specific bacteria to emerge from the intestinal tract of the nematode. These spread inside the insect and multiply very rapidly. The bacteria convert host tissue into products which can easily be taken up by the nematodes. The soil dwelling insect dies within a few days. Beneficial nematodes are a totally safe biological control in pest insects. The Beneficial nematodes are so safe the EPA has waived the registration requirements for application.NATURAL PEST CONTROL WITH BENEFICIAL NEMATODES
NATURE'S BEST WAY OF KILLING Grubs and Japanese Beetles.
Though they are harmless to humans, animals, plants, and healthy earthworms, beneficial nematodes aggressively pursue insects. The beneficial nematodes can be used to control a broad range of soil inhabiting insects and above ground insects in their soil inhabiting stage of life. More than 200 species of pest insects from 100 insect families are susceptible to these nematodes. When they sense the temperature and carbon dioxide emissions of soil-borne insects, beneficial nematodes move toward their prey and enter the pest through its body openings. The nematodes carry an associated bacterium (Xenorhabdus species) that kills insects fast within 48 hours. The bacteria is harmless to humans and other organisms and cannot live freely in nature. Several generations of nematodes may live and breed within the dead insect, feeding on it as a food source. When the food source is gone, they migrate into the soil in search of a new host. When the pest population is eliminated, the beneficial nematodes die off and biodegrade. Beneficial nematodes are so effective, they can work in the soil to kill the immature stages of garden pests before they become adults.
Beneficial nematodes infest grubs and other pest insects that are known to destroy lawns and plants.
The Nematodes are effective against grubs and the larval or grub stage of Japanese Beetles, Northern Masked Chafer, European Chafer, Rose Chafer, Fly larvae, Oriental Beetles, June Beetles, Flea beetles, Bill-bugs, Cut-worms, Army worms, Black Vine Weevils, Strawberry Root Weevils, Fungus Gnats, Sciarid larvae, Sod Web-worms, Girdler, Citrus Weevils, Maggots and other Dip-tera, Mole Crickets, Iris Borer, Root Maggot, Cabbage Root Maggot and Carrot Weevils.
Beneficial nematodes belong to one of two genera: Steinernema and Heterorhabditis are commercially available in the U.S. Steinernema is the most widely studied beneficial nematode because it is easy to produce. Heterorhabditis is more difficult to produce but can be more effective against certain insects, such as th white grubs, and Japanese beetles.
What are beneficial nematodes?
Nematodes are morphologically, genetically and ecologically diverse organisms occupying more varied habitats than any other animal group except arthropods. These naturally occurring organisms are microscopic, unsegmented round worms that live in the soil and, depending on the species, infect plants and animals. The two nematode families Steinernematidae and Heterorhabditidae, contain the insect parasitic nematode species. The most commonly used beneficial nematodes are Steinernema carpocapsae, S. feltiae, and H bacteriophora. Nematodes that are endoparasites of insects attack a wide variety of agricultural pests.
The life cycle of beneficial nematodes consists of eggs, four larval stages and the adults. The third larval stage is the infective form of the nematode (IT). They search out susceptible hosts, primarily insect larvae, by detecting excretory products, carbon dioxide and temperature changes. Juvenile nematodes enter the insect host through the mouth, anus or breathing holes (spiracles). Heterorhabditid nematodes can also pierce through the insect’s body wall. The juvenile form of the nematode carries Xenorhabdus sp. bacteria in their pharynx and intestine. Once the bacteria are introduced into the insect host, death of the host usually occurs in 24 to 48 hours.
As the bacteria enzymatically breaks down the internal structure of the insect, the Steinernematids develop into adult males and females which mate within the insect's body cavity. Heterorhabditids produce young through hermaphroditic females. This form of nematode has the sexual organs of both sexes. As the nematodes grow, they feed on the insect tissue that has been broken down by the bacteria. Once their development has reached the third juvenile stage, the nematodes exit the remains of the insect body.
Why are these organisms beneficial?
Parasitic nematodes are beneficial for six reasons. First, they have such a wide host range that they can be used successfully on numerous insect pests. The nematodes' nonspecific development, which does not rely on specific host nutrients, allows them to infect a large number of insect species.
Second, nematodes kill their insect hosts within 48 hours. As mentioned earlier, this is due to enzymes produced by the Xenorhabdus bacteria. Third, nematodes can be grown on artificial media. This allows for commercial production which makes them a more available product.
Fourth, the infective stage is durable. The nematodes can stay viable for weeks when stored at the proper temperature. Usually 3 weeks when refrigerated at 37o to 50o F. They can also tolerate being mixed with various insecticides, herbicides and fertilizers. Also, the infective juveniles can live for some time without nourishment as they search for a host.
Fifth, there is no evidence of natural or acquired resistance to the Xenorhabdus bacteria. Though there is no insect immunity to the bacteria, some insects, particularly beneficial insects, are possibly less parasitized because nematodes are less likely to encounter
How beneficial nematodes work: The life cycle of beneficial nematodes consists of six distinct stages: an egg stage, four juvenile stages and the adult stage. The adult spends its life inside the host insect. The third juvenile stage, called a dauer, enters the bodies of insects (usually the soil dwelling larval form. Some nematodes seek out their hosts, while others wait for the insect to come to them. Host seeking nematodes travel through the soil the thin film of water that coats soil particles. They search for insect larvae using built-in homing mechanisms that respond to changes in carbon dioxide levels and temperture. They also follow trails of insect excrement. After a single nematode finds and enters an insect through its skin or natural openings, the nematode release a toxic bacteria that kills its host, usually within a day or two. In less than two weeks the nematodes pass through several generations of adults, which literally fill the insect cadaver. Steinernema reproduction requires at least two dauer nematodes to enter an insect, but a single Heterorhabditis can generate offspring on its own.The nematodes actively searches for insect larvae. Once inside the larva the nematodes excretes specific bacteria from its digestive trac before it starts to feed. The bacteria multiply very rapid and convert the host tissue into products that the nematodes take up and use for food. The larva dies within a few days and the color changes from white-beige to orange-red or red-brown. The nematodes multiply and develop within the dead insect. As soon as the nematodes are in the infectious third stage, they leave the old host and start searching for new larvae. Infected grubs turn color from white-beige to red brown 2-4 days after application and becomes slimy. After a few weeks, dead larvae disintegrate completely and are difficult to find.
Beneficial nematodes are also very effective against termites, German cockroaches, flies, ant, and fleas.
Beneficial Nematodes attacking termite
APPLICATION:
Beneficial Nematodes are very easy to use. Mix with water and spray or sprinkle on the soil along garden plants or lawn. Put the contents of the Beneficial nematodes in a bucket of water and stir to break up any lumps, and let the entire solution soak for a few minutes. Application can be made using a water-can, irrigation system, knapsack or sprayer. On sprayer use a maximum pressure to avoid blockage, all sieves should be removed. The sprayer nozzle opening should be at leat 1/2 mm. Evenly spread the spraying solutions over the ground area to be treated. Continuous mixing should take place to prevent the nematodes from sinking to the bottom. After application keep the soil moist during the first two weeks for the nematodes to get establish. For a small garden the best method is using a simple sprinkling or water can to apply the Beneficial nematodes to the soil. Apply nematodes before setting out transplants; for othe pest insects, Japanese Beetles and grubs, apply whenever symptomatic damage from insects is detected. Best to apply water first if soil is dry.
Proper storage and handling is essential to nematode health.
Always follow the package instructions for the best method of mixing nematodes. Formulations vary depending on the species and target insect. Nematodes can be stored in the refrigerator up to a month (not the freezer) before they are mixed with water, but once the nematodes are diluted in water, they cannot be stored. Also, nematodes shouldn't be stored in hot vehicles, or left in spray tanks for long periods of time.
Nematodes need moisture in the soil for movement (if the soil is too dry or compact, they may not able to search out hosts) and high humidity if they are used against foliage pests. Watering the insect-infested area before and after applying nematodes keeps the soil moist and helps move them deeper into the soil. Care should be taken not to soak the area because nematodes in too much water cannot infect.
Apply nematodes in the early evening when soil temps are lower and UV incidence is lower as well (cloudy or rainy days are good too). Nematodes function best when pest insects are present in the soil.
Application is usually easy.
In most cases, there is no need for special application equipment. Most nematodes species are compatible with pressurized, mist, electrostatic, fan and aerial sprayers! Hose-end sprayers, pump sprayers, and watering cans are effective applicators as well. Nematodes are even applied through irrigation systems on some crops. Check the label of the nematode species to use the best application method. Repeat applications if the insect is in the soil for a longer period of time. There is no need for masks or specialized safety equipment. Insect parasitic nematodes are safe for plants and animals (worms, birds, pets, children). Because they leave no residues, application can be made anytime before a harvest and there is no re-entry time after application.
How to use beneficial nematodes: For the home gardener, localized spraying is probably the quickest and easiest way to get the nematodes into the soil. Producers ship beneficial nematodes in the form of dry powder type, and sponges. All of these dissolve in water and release the millions of nematodes. Each nematode ready to start searching for an insect in your lawn or garden. Nematodes should be sprayed on infested areas at the time when pests is in the soil. Timing is important, or else you will have to repeat the application. Northern gardeners should apply the nematodes in the spring, summer and fall, when the soil contains insect larvae. Most of the beneficial nematodes are adaptive to cold weather. In fact , the very best time to control white grubs is in the spring and fall. If your in a warmer climate, beneficial nematodes are most effective in the summer.
Fertilizers should be avoided roughly 2 weeks prior to and after nematode application, because they may be adversely affected by high nitrogen content.
Some pesticides work well with nematodes when their mutual exposure is limited while other pesticides may kill nematodes. Check labels or specific fact sheets to find out. Some chemicals to avoid are bendiocarb, chlorpyrifos, ethoprop, and isazophos. Fungicides to avoid are anilazine, dimethyl benzyl, ammonium chloride, fenarimol, and mercurous chloride. The herbicides, 2,4-D and trichlopyr and nematicide, fenamiphos, should be avoided as well.
During hot weather release nematodes in the evening when temperature is cooler. Release once or twice a year or until infestation subsides. Nematodes are shipped in the infectious larvae stage of their life cycle and can be stored in the refrigerator for up to 2 weeks. Always release very early in the morning or late in the late afternoon.
The value of beneficial nematodes is extremely high for anyone dealing with soil dwelling pest infestations. When considering where to buy nematodes, the Internet can be a great source of recommendations and contact information for distributors across the nation. Knowing what to expect when you receive your nematodes and how to apply them to your lawn and garden is part of being happy with the provider you choose.
Nematodes are microscopic, like moist soil, and are the best predators of pests that spend any stage of their life cycle in the soil. Fleas, cut worms, ants, root weevils and grubs are just a few of more than 250 difficult to control pests that nematodes move through the ground consuming without harming the environment.
There are a couple of determining factors when considering where to buy beneficial nematodes. It is best to order biological control nematodes and have them delivered directly to you from a reliable source. This helps insure that the nematodes you are buying are still alive. Nematodes do not live very long in storage. Therefore, buying nematodes that are stocked on a store shelf is very risky.
Step 1
Purchase beneficial nematodes from a reputable dealer. If your garden center does not carry nematodes, order them from a source online. As living organisms, they must be handled properly to remain effective. The species of nematodes used for lawn infestations are microscopic. You will see the carrier when you open the package, not the tiny nematodes. Beneficial nematodes are non-toxic to humans and pets.
Step 2
Apply the nematodes as soon as possible after you receive them. Store them in the refrigerator if you cannot apply them immediately.
Step 3
Apply nematodes in the evening for best results. Nematodes can die from exposure to sunlight or from drying out in the heat. Mix them with water in your sprayer and apply them by simply spraying your lawn. Follow specific instructions that came with the nematodes.



























The survey of 17 districts of the Punjab province of the country revealed that root-knot nematodes prevailed in 85.25% of okra fields with an average incidence of 38.89%. Hundred percent prevalence was recorded in Multan, Okara, Dera Ghazi Khan, Bahawalnagar, Vehari, Rahim Yar Khan and Rawalpindi districts and a minimum prevalence of 22.4% was found in Lodhran district. The incidence was above 60% in Bahawalnagar, Rahim Yar Khan, Dera Ghazi Khan and Vehari and was only 4.44% in Lodhran.
Meloidogyne_incognitaThe severity of infection of the nematodes was highest in Bahawalnagar and Vehari, while it was lowest in Lodhran. Of the four most common root-knot species, M. incognita contributed 74.74%, M. javanica 24.02%, M. arenaria 2% and M. hapla 0.78%. Of the twelve cultivars of okra screened for resistance against M. incognita, none was found tolerant, highly resistant or moderately resistant. Two cultivars viz. Selection-31 and Okra Sindha were susceptible and the cultivar Punjab Selection was found highly susceptible. The rest of the cultivars showed moderate susceptibility towards the nematode. All the cultivars caused reduction in various growth parameters to varying levels over their respective controls. When the effect of different inoculum levels of M. incognita was investigated on the highly susceptible okra cultivar ‘Punjab Selection’, all the densities of nematode behaved differently. The reduction in growth parameters and increases in number of galls and egg masses were found directly proportional to the inoculum level as against, the nematodes build up which was found to be inversely proportional. 2 All the tested antagonists proved effective in controlling M. incognita and significantly increased the root and shoot lengths and weights and caused reductions in number of galls and egg masses. Pochonia chlamydosporia and Pasteuria penetrans were found equally effective at a concentration of 8 103 chlamydospores / endospores per gram of soil. Incorporation of leaves of Azadirachta indica, Calotropis procera, Tagetes erecta and Datura stramonium in the soil @ 25, 50 and 75 g / kg of soil controlled M. incognita to varying degree. A. indica and C. procera caused maximum reductions in number of galls, egg masses and reproduction factor (Rf) of the nematode resulting into an increases in various growth parameters.
Reference: Muhammad Arshad , Hussain (2011) Studies on Biology, Distribution and Management of Meloidogyne spp. On Okra. PhD thesis, University of Arid Agriculture, Rawalpindi .

Vaughn M. Walton
ARC Infruitec-Nietvoorbij, Stellenbosch
Mealybug (Planococcus ficus) is one of the key pests affecting vines in South Africa. The last two seasons favourable climatic conditions urged viticulturists to focus on this pest once more. To control the mealybug successfully, a thorough knowledge of the insect’s biology is required. In this article an attempt is made to shed light on the biology of mealybug and possible control strategies will be recommended.
Biology and Life cycle The rate of development of mealybug is directly dependent on environmental temperature. Eggs are laid in egg-sacs consisting of a mass of wax threads. Crawlers hatch after 7-10 days at an average temperature of 25°C (Fig.1).
Crawlers cast their skins to become 2nd and 3rd instar larvae (nymphs), while third instar larvae cast their skins to become adult females. After mating, the egg-sac develops and the female starts laying up to 750 eggs at a time. Damage is only caused by the female mealybug. She is more visible than the male, since the latter only lives between one and three days. The female feeds with sucking mouthparts and nutrients are extracted from the plant, while honeydew is excreted.
The male mealybug causes no damage as it has no feeding mouthparts. The only difference between the lifecycle of the two sexes is that in the case of the male, second instar larvae spin a cocoon in which the third instar larvae, pre-pupae and pupae develop. Adult winged males then appear from the cocoon. In summer mealybugs can complete their lifecycle in 3 to 4 weeks, causing populations to develop rapidly under favourable conditions.
Seasonal occurrence
In winter mealybugs hide beneath loose bark and in cracks on the trunks of vines (Whitehead, 1957). It was recently found that mealybug can also hibernate on vine roots (Fig. 2) and weeds (Fig. 5).
MealybugIn winter they continue to feed on vine sap and lay eggs. Due to the low environmental temperature the lifecycle is very slow. As soon as temperatures start rising in spring and early summer, crawlers emerge from below the bark and cracks in search of the new growth with its higher nutrient concentrations. Crawlers settle on new leaf and shoot growth where they develop, mate and multiply. In January/February these populations are at their highest. Mealybugs then move to the bunches where the nutrients are increasing. Here they feed mainly on the bunch and berry stems. In late summer and autumn nutrients start moving to the roots from the leaves and stems (Conradie, 1985) and the downward migration of mealybugs takes place once again.
Symptoms and possible damage
Mealybugs excrete sticky honeydew on which sooty mildew (a fungus) grows. Affected bunches can be rejected in the case of table grapes and downgraded by wine cellars. When mealybug infestation is serious, browning and wilting of leaves may occur, as well as early shedding. The latter, as well as mealybugs feeding on vines, can result in loss of nutrients which may cause weakening of the vines (Fig. 3).
High infestations may result in desiccation of bunches, making them totally unmarketable (Fig. 4).
Repeated serious infestations can cause individual vines to die. Furthermore, while early shedding of leaves can cause sunburn damage to grapes, mealybug is also a vector of leafroll virus.
Integrated control
With integrated control, chemical, biological and cultivation methods are used in conjunction with each other. Each method contributes to the total control strategy. In an integrated programme various aspects should be considered to ensure an environmentally friendly, yet effective end result.
Integrated mealybug control may be implemented in the planning phase, even before planting. Factors that could play a role are cultivar differences and macro- as well as micro-climatic conditions.
Certain cultivars are more susceptible to mealybug than others and are indicated in Table 1 (Le Roux, 1996).
Before planting a new vineyard, the history of mealybug infestation in the area should be ascertained, especially if one of the more susceptible cultivars is being considered. If high average temperatures occur in a specific area, there is a bigger chance of mealybug problems. Favourable micro-climates, e.g. slopes that get excessive northerly sun, may also occur in certain blocks and encourage mealybug infestation.
a) Monitoring

It is of the utmost importance that a vineyard which is regularly plagued by mealybug should be monitored for the pest early in the season. By regular monitoring, the development of a problem may be predicted and possible control strategies implemented. An early indication of mealybug is the presence of ants. Certain weeds (as indicated below) have roots that may be checked for the presence of mealybug. These observations may serve as early warning signs. At least twenty vines, evenly distributed over a block of one hectare, must be monitored. Later in the season mealybug infested vines are more visible – they are covered in honeydew and sooty mildew and ants are usually present. In the late summer early shedding of leaves and desiccated bunches are further symptoms. In winter sooty mildew and sometimes even ants are already visible on infested vines. Infested vines should be marked throughout the season, in the course of pruning and vine preparation and also during harvesting. Vines that are marked make it easier to control mealybug accurately and effectively. Once monitoring has been done, a decision can be taken as to which control strategy should be followed.
b) Weed control
Before considering any other means of control, the first step is to control weeds. During the past season it was found that various weeds may serve as hosts for mealybug.
Mealybug occurs on the roots of the following weeds (For illustrations of weeds refer to Fourie et al., 1996) :
  • Common blackjack (Bidens pilosa)
  • Khaki weed (Tagetes minuta)
  • Small mallow (Malva parviflora)
  • Flax-leaf fleabane (Conyza bonariensis)
  • Black nightshade (Solanum nigrum)
  • Thornapple (Datura stramonium)
  • Sowthistle (Sonchus oleraceus)
  • Musk Herons Bill (Erodium moshantum)
  • White goosefoot (Chenopodium album)
A correlation has been found between the occurrence of these weeds and mealybug problems in vines. The best method of control is the planting of cover crops as recommended by Fourie et al. (1997). Long flowering cover crops that do not host mealybug may reduce ant problems, may help to reduce the forming of dust, may serve as supplementary nutrition for natural enemies and may bind nitrogen. Weeds may also be controlled physically (shrub beaters) and chemically (herbicides) (Fourie et al., 1996). Weeds have to be controlled from early in the season, since they act as access routes to the vine for ants and do not contribute much to the quality of the soil. Ant control is impossible if weeds grow into the vines.
c) Ant control
Effective ant control is a prerequisite for mealybug control since ants protect mealybug against its natural enemies. Ueckermann (1998) found the most effective means of ant control to be circular spraying around the trunk. This method of control is also more environmentally friendly than chemical treatments on the soil. The purpose of this application method is to keep ants out of the vines, but still allow them on the soil surface. Here ants may act as predators of beetle, fruit fly and moth larvae and pupae. At the moment chlorpyrifos EC is the only registered pesticide against ants (Nel et al., 1999). Chlorpyrifos has also been tested at 41ml/L (not a registered concentration) with reasonably good results (Ueckermann, 1998). Trunk treatments for ants should be dependent on ant activity. Usually ants become more active from October onwards if mealybug is present.
d) Natural enemies and biological control
Natural enemies can only impact on mealybug control if prior practices have been implemented. There is worldwide resistance to the use of insecticides. South African wine farmers therefore have to limit the use of chemical products to the absolute minimum. In future the role of natural enemies will consequently increase. Research indicates that if integrated control is applied correctly, these natural enemies can control mealybug successfully. For this reason it is essential to recognise natural enemies in the vineyard and surroundings before considering the use of chemical products.
The most common natural enemies of mealybug include the parasitic wasp which plays an important role in most vineyards. The most important parasitic wasps are Anagyrus sp. (Fig. 6A), Leptomastix dactylopii (Fig. 6B), and Coccidoxenoides peregrinus (Fig.6C).
These insects eliminate mealybug populations by laying their eggs in the host. The parasite eggs develop in the body cavity of the mealybug. The host is eventually killed when the parasite engulfs the body cavity and hatches. Coccidoxenoides peregrinus is being bred on a large scale at Nietvoorbij and is then set free in trial blocks. Results obtained over the past two seasons are very promising and in future C. peregrinus can possibly be bred co-operatively and released to control mealybug. However, it is sometimes difficult to determine whether these insects are indeed present in vineyards. It is possible, nevertheless, to notice mummies of parasitised mealybug with the naked eye (Fig. 7).
Predatory beetles also occur in vineyards early in the season. The most dominant beetles include Nephus quadrivittatus (Fig. 6D) and Nephus bineavatus (Fig. 6E). These beetles eat various stages of mealybug.
d) Chemical control
This method of control should be seen as the last resort for mealybug control, since no insecticides are environmentally friendly. The substances mentioned below are organophosphates that are poisonous to people, cattle, birds, fish, natural enemies and bees. Since mealybug occurs in random spots in vineyards, an attempt should be made to give spot treatments in order to reduce the impact on the ecosystem.
Certain products are only applied in the growing season, while others are used both in winter and the growing season. Dosages (per 100l water) also differ, depending on the growth stage. Dormant treatments (before the new growth begins) should only be applied if more than 5% infestation occurs. This reduces hibernating mealybug populations to such an extent that natural enemies can control mealybug effectively the next season. Routine dormant spraying should be avoided. Try to spray only the vine that has been marked and the two vines on either side with hand-held spray guns and a high pressure pump. Atomiser sprays do not give sufficient coverage. The following chemical products and application methods are still being used at present (Nel et al., 1999; Vermeulen, 1999):
  • 1.Chlorpyrifos EC (480g/l) at 200ml/100l is recommended twice, 14 days apart, prior to budding. After budding there are problems with phytotoxicity on young shoots and leaves. Chlorpyrifos at this dosage also suppresses the Argentine and Cocktail ant.
  • 2.Profenofos EC (500g/l) at 100ml/100l is also recommended twice,14 days apart, prior to budding. Thorough drenching is required.
  • 3.Protiofos EC (960 g/l) at 50ml/100l is recommended once before budswell. A safety period of 100 days must be maintained, however.
During the growing season the following chemical products and application methods are allowed (Nel et al., 1999; Vermeulen, 1999):
  • 1.Chlorpyrifos EC (480g/l) is recommended at 75ml/100l from four weeks after budding up to 28 days before the harvest. Take note of the dosage, higher dosages will result in phytotoxicity on leaves.
  • 2.Dichlorvos EC (1000g/l) is recommended at 75 ml/100l up to 7 days before harvest. This treatment is only supplementary to winter treatments.
  • 3.Dimethoate EC (400g/l) is recommended at 125ml/100l up to 28 days before harvest.
  • 4.Formothion EC (250g/l, 330g/l) is recommended at 150ml/100l up to 10 days before harvest.
  • 5.Methidathion EC (420g/l) is recommended at 50ml/100l up to 8 days before harvest. This treatment is prescribed as a late corrective one-off treatment.
  • 6.Mevinphos SL (500g/l) is recommended from 37,5-45 ml/100l up to 7 days before harvest.
e) Post-harvest spraying
Post-harvest spraying is not recommended, since this is the period when the populations of natural enemies, which are a lot more susceptible to insecticides than mealybug, are at their highest. Spraying at this stage interferes with biological control for the next season. If vines deteriorate, and early shedding of leaves occurs, the infested vines only can be sprayed.
f) Further guidelines

If a decision to use chemical control is taken, the following guidelines may be followed in order to interfere as little as possible with biological control of mealybug:
Apply the minimum amount of chemical products per season. If full cover has to be achieved with spraying, products that degrade rapidly (withdrawal period of 7-10 days) are recommended. In old vines loose bark around the main trunk and neck may be removed so that penetration of the insecticide will be more effective and more mealybugs killed. For ant and snoutbeetle control, synthetic pyretroids are recommended for trunk spraying instead of soil or full cover spraying. With monitoring and correct application no more than two trunk sprays per season are required. With snoutbeetle control, full cover spray with synthetic pyretroids (withdrawal periods of 28 days and longer) should be avoided. Rather apply fruit fly bait droplets than a full cover spray. Chemical control for budmite should only be applied if bud analysis at the time of pruning indicate this to be necessary.
Planting suitable cover crops has several advantages. It limits dust forming, which decreases natural enemies efficiently. It provides certain natural enemies with alternative nutrition and shelter. It benefits weed control and improves soil quality. Attempt to establish cover crops that flower early and for a long time during the season, thereby giving natural enemies an early advantage in the season.
In conclusion
Mealybug remains one of the key pests in the viticultural industry. To address this problem, five projects are currently registered with ARC Infruitec-Nietvoorbij, viz.:
  • Mass breeding of natural enemies of mealybug
  • Integrated control of mealybug in vineyards
  • Bio-testing of insecticides on natural enemies of mealybug
  • Determination of life-span tables of mealybug and an important natural enemy
  • Determination of the economic threshold values of mealybug
With these projects an attempt is being made to develop effective and environmentally friendly control strategies against mealybug.
Further queries about mealybug or its natural enemies may be addressed to Vaughn Walton at Tel.: 021 809 3167, Fax: 021 809 3002, or e-mail: vaughn@nietvoor.agric.za.
Literature references
Annecke, D.P. & Moran, V.C. 1982. Insects and mites of cultivated plants in South Africa. Butterworths, Durban/Pretoria.
Conradie W.J. 1985. Nitrogen nutrition of the grapevine (Vitis vinifera spp.). Ph.D., University of Stellenbosch.
Fourie, J.C. 1996. Uitkenning en chemiese beheer van belangrike onkruide in Wingerde van Suid-Afrika. Nooitgedacht Pers, Kaapstad.
Fourie, J.C., Louw, P.J.E., & Agenbach, G.A. 1997. The effect of different cover crop species and cover crop management practices on the available N and N-status of young Sauvignon blanc vines on a sandy soil in Lutzville. Abstract, South African Society for Enology and Viticulture Congress, 27-28 November 1997, Cape Town.
Le Roux, P. 1996. Die chemiese beheer van wingerdwitluis, in Wingerdwitluis paneelbespreking, SAWWV – Kongres, Kaapstad, 8 November 1996.
Nel, A., Krause, M., Ramautar, N. & Van Zyl, K. 1999. A guide to the control of plant pests. Directorate: Agricultural Production Input, National Department of Agriculture, Republic of South Africa.
Prinsloo, G.L. 1984. An illustrated guide to the parasitic wasps associated with citrus pests in the Republic of South Africa. Department of Agriculture Science bulletin, No. 402.
Ueckermann, P. 1998. Ant control in vineyards. Wynboer Tegnies 105: 8-9.
Vermeulen, A.K. 1999. A Guide to the use of Registered Fungicides and Pesticides against Grapevine Diseases and Pests: Wine Grapes. ARC-Fruit Vine and Wine Research Institute, Private Bag X5026, Stellenbosch, 7599, South Africa.
Whitehead, V.B. 1957. A study of the predators and parasites of Planococcus citri (Risso) (Homoptera) on vines in the Western Cape Province, South Africa. M.Sc. thesis, Rhodes University, Grahamstown, South Africa.
Source: http://www.wynboer.co.za

It seems like no matter what time of the year, insects abound, but there is a great organic solution available to keeping bugs in check.
neemtreeOf course good gardening practices and proper crop rotation help, but sometimes you need a helping hand to keep your plants safe.
The neem tree, which has insecticidal properties and is native to India and Africa, produces seeds that have been used to repel insects and pests in stored grains and in gardens and homes for years.
Today, the extract of the neem tree seed is the active ingredient in Neem-Away Insect Spray. Neem-Away suppresses an insect’s desire to feed and disrupts its hormonal balance so it dies before molting.
Field tests have shown Neem-Away to be effective against a wide range of insects from aphids and caterpillars to corn borer and squash bugs. Neem-Away will not harm beneficial insects such as lady beetles and lacewing.
Neem oil can be used on a broad range of insects on vegetables, fruits and nuts, flowers, trees and shrubs.
Apply when pests first appear to prevent damage. Repeat every 7-10 days as needed; regular spraying increases its effectiveness. 
Source: http://www.weekendgardener.net

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By: Barbara Nadeem

Tomato, tomahto... no matter how you pronounce it, the tomato is probabaly the most widely grown vegetable. The tomato relative ease of culture is top choice by the home gardener because of its food value and many uses.
Health benifits of Tomatoes:
Pest Control in Garden
One medium-sized tomato has only 35 calories. The tomato is rich in vitamins C and A, and contains small amounts of the B vitamins and potassium. Tomatoes are also very well known for their high carotenoid content. Nine different carotenoids have been identified in tomatoes, two of them are beta-carotene and lycopene. Carotenoids are thought to have a number of health benefits, such as reducing the risk of developing cancer, cardiovascular disease, and macular degeneration. There has been a lot of medical and nutritional research on lycopene; incidentally, lycopene is responsible for the red color in tomatoes. About 80 to 90% of lycopene consumed by humans comes from tomatoes. Surprisingly enough, lycopene is absorbed better from processed tomato products than from fresh tomatoes. Tomato plants are very productive. When grown as staked plants, tomatoes require a relatively small amount of space, yet are capable of producing 8 to 10 pounds or more of fruit per plant. Some of the more compact tomato cultivars can be easily grown in containers. Hence, gardeners who have limited space can still grow tomatoes.
Grab a pot, some soil and some tomato seeds and start a tomato garden.. One thing about tomatoes is that garden pests enjoy the fruits of our labors before we can...  So to deture some of these un invited guest pests here is a few organic recipes to help aid in keeping your  plants healther and your harvest of your urban garden safe..
Organic Pest Control:
Tomato plants, as members of the nightshade family, contain toxic compounds called alkaloids in their leaves. When the leaves of tomato plants are chopped, they release their alkaloids. When the alkaloids are suspended and diluted with water, they make an easy to use spray that is toxic to aphids, but still safe around plants and humans.
What You'll Need:
1.   One to two cups of tomato leaves
2. Two cups of water
3.  A strainer or cheesecloth
4. Spray bottle
To make tomato leaf spray, simply soak one to two cups of chopped tomato leaves in two cups of water. Let it steep overnight. To make the spray, strain the leaves out of the liquid using cheesecloth or a fine strainer. Add another one to two cups of water to the liquid and add it to a spray bottle.
Control of Tomato Pest in Garden
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Garlic Oil Spray
Organic gardeners have long relied on garlic as part of their pest-fighting arsenal. Garlic contains sulfur, which, besides being toxic to pests, is also an antibacterial and antifungal agent. The dish soap in this mixture also breaks down the bodies of soft-bodied pests, such as aphids.
What You'll Need:
1.        Three to four cloves of garlic
2.        Mineral oil
3.        Strainer or cheesecloth
4.        Liquid dish soap
5.        Water
6.     Spray bottle
To make garlic oil spray, mince or finely chop three to four cloves of garlic, and add them to two teaspoons of mineral oil. Let this mixture sit for 24 hours. Strain out the garlic pieces, and add the remaining liquid to one pint of water. Add one teaspoon of liquid dish soap. This mixture can be stored and diluted as needed. When you need to spray, use two tablespoons of the mixture added to one pint of water in a spray bottle.
To use your garlic oil spray, first test by spraying an inconspicuous part of the plant to see if your mixture harms it at all. If there are no signs of yellowing or other leaf damage after a day or two, it is safe to use. If there is leaf damage, dilute the mixture with more water and try the test again. Once you have determined that it won't harm your plant, spray the entire plant, paying special attention to the undersides of leaves.
Warning: Garlic oil is a non-selective insecticide, which means that it will kill beneficial insects (such as lady bugs, who are natural predators of aphids) just as easily as it kills the bad guys. It's best to keep as many beneficials around as possible. This spray should only be used if you haven't seen any beneficial bugs in your garden. The tomato leaf recipe, above, won't harm beneficials, so you should use that if you're lucky enough to have some beneficials in your garden.
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you can also spray the plants with any of a number of homemade insect deterrents. While this isn’t as effective as manually removing them, it will kill quite a few bugs and won’t hurt the plants, the environment, or you.
Some things to try:
Soapy water. Any biodegradable liquid soap will do. Use about a ¼ cup of soap per gallon of water, and rinse the plants with clean water an hour or so after you spray them so that the soap doesn’t burn their leaves.
Oily water. Blend about a ¼ cup canola or olive oil with one gallon of water and spray on plants. Remember to shake the spray bottle frequently to keep things mixed up.
Hot pepper spray. To make your own, puree four or five chili peppers with a gallon of water, strain, and spray. This is even more effective if you let the puree age for a day or so before you strain and use it.
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you can also spray the plants with any of a number of homemade insect deterrents. While this isn’t as effective as manually removing them, it will kill quite a few bugs and won’t hurt the plants, the environment, or you. So get out the pots, get the soil and seeds and start gardening.

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Gardening is not too complex. Almost all of us—probably in grade school—planted a seed in a cup of dirt, watered it, and watched it grow. But creating a garden that produces fresh food and flowers all season is not so elementary, especially to those who did not grow up gardening. 
So we've compiled this guide to the basics of organic gardening and the keys to success we've learned over the years. When you're done reading, look at your thumb—you may see a tint of green that wasn't there before.
Planting Seeds
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1. Make your bed. About three weeks before you are ready to plant, after the soil has dried so that it doesn't clump when you pick up a fistful, sink a fork into the earth. Loosen it down to about 12 inches, add a half-inch layer of compost, and rake the surface of your garden until it has no weeds, dirt clumps, or big stones. Over the next three weeks, pull any weeds that come up. Raking and then letting the soil sit for a few weeks brings out weed seeds that were lurking in the soil.
2. Dig a furrow—or not. If you like symmetry and order, carve out a shallow trench with a hoe or hand trowel. But you don't have to plant in rows. You can organize your garden as a grid, with plants at the four corners of each square, or you can choose not to organize it at all. Whichever style you go with, dig shallow furrows or holes for the seeds.
3. Water lightly. Moisten but don't soak the soil. Watering before rather than after planting the seeds protects them from being swamped, or washed up and out of the soil.
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4. Sow the seeds. Spread the seeds through the trench or place two or three in each planting hole. The seed packet tells you how far apart to plant them. If you plant too closely, you can thin them after they come up and, in many cases, eat the thinnings.
5. Cover with soil. As a rule of thumb, bury seeds only about as deep as their diameter. Sprinkle soil on top of the seeds, pressing gently to ensure they have contact with the soil. A few seeds, such as lettuce and dill, need light to sprout, so cover them sparingly. (Seed packets tell you if they need light to germinate.)
6. Keep moist. Sprinkle water on the seedbed whenever the surface is dry until all the seeds have sprouted.
Key to success: Add compost to planting holes to improve the soil's structure, provide slow-release nutrients, and activate the beneficial microbes in the soil.
Six Essential Tools
  • Trowel
  • Hand-weeding tool
  • Hoe
  • Pruners
  • Fork
  • Spade
Transplanting:
These steps apply to vegetables you get in packs at the garden center, as well as annual and perennial flowers. 
1. Dig a hole. Make the planting hole as deep as the plant's container and about double the diameter. 
2. Water the plant. Give it a drink before planting, because until the roots start growing, they can't draw water from the soil. 
3. Remove the plant from the pot. Place your hand on top of the pot, with your fingers around the plant's stem. Turn the pot upside down and gently squeeze it or push the plant out from the bottom with your other hand. If you must tug it out, pull it by its leaves rather than the stem (if a leaf comes off, no harm done; damage the stem, and the plant will not survive). 
4. Check the roots. If the roots have wrapped around and around the plant, gently pull a few loose with your fingers. 
5. Place it in the hole. Set the plant in the hole at the same depth it was in its pot, generally where the stem meets the roots. Tomatoes are an exception to this rule—plant them deeper. 
 6. Replace soil and then water. Backfill the hole with the soil you removed and press gently to ensure that the roots have solid contact with the soil. Be sure the soil stays consistently moist until you see the plant start to grow. 
Key to success: Transplant on an overcast day to give the plants a chance to adjust to their new home without being withered by direct sun.
Managing Weeds:
www.agrinfobank.comWeeds siphon water and nutrients away from your garden w, they can harbor pests, and they sure can make your garden look a mess. But you don't need to spray toxic herbicides, which are harmful to people, pets, and wildlife, to keep plant invaders out of your organic garden. Use these strategies instead.
Mulch. Keep your soil covered at all times to prevent light from reaching weed seeds. Spread a thick layer (2 or more inches deep) of organic mulch—straw, dried grass clippings, shredded leaves—on your garden each spring and replenish it throughout the growing season. Bonus: The mulch nourishes your soil as it decomposes. For even better weed protection, use several sheets of newspaper, kraft paper (such as grocery bags), or cardboard under these mulches. They are nearly impenetrable by weeds.
Hand-pull. Sounds like a lot of work, we know. But pulling out a few weeds every day or at least every week keeps them from getting out of control and brings you up close to your garden so you can inspect your plants for problems. Keep a bale of straw or a pile of grass clippings on hand so you'll have mulch on demand to help prevent weeds from returning after you've pulled them.
Hoe. Use a hoe's sharp edge to sever weed stems from their roots just below the soil surface. Forget about the square-headed traditional garden hoe for this job—get a stirrup-shaped oscillating or a swan-neck hoe instead. To hoe your garden without cultivating a backache, hold the hoe as you would a broom.
Spread corn. You can suppress the growth of weed seeds early in the season by spreading corn-gluten meal. This works best in established lawns. Corn-gluten meal, a by-product of corn processing that is safe for people, pets, and wildlife, inhibits the germination of seeds and fertilizes at the same time. Bear in mind, once the weeds have grown beyond the sprout stage, corn gluten does not affect them. Also, corn gluten doesn't discriminate between seeds you want to sprout and those you don't want, so avoid using corn-gluten meal where and when you've sown seeds.
Solarize. Where you have a persistent weed problem or you need to clear a thick mat of weeds from a brand-new bed, enlist the sun's help. In late spring or early summer, pull, hoe, or rake out as many weeds as you can from the bed. Then moisten the soil and cover it with a tight layer of clear plastic, weighting or burying the edges. Leave the plastic in place for six weeks so the sun cooks any remaining weed seeds.
Be persistent. This is your most important long-range weapon against weeds. Mulch, and pull or hoe the weeds for a few minutes whenever you visit your garden. Do these things consistently for a few seasons, and you will slowly but surely expel problem invaders for good.
Key to success: Weeds come out easily when the soil is moist, so think of a summer rainstorm as an opportunity to free your garden from a weed infestation.
Use This.....................Not That
Fish and seaweed fertilizer..Miracle-Gro
Insecticidal soap............Sevin
Clove oil herbicide..........Roundup
Compost......................Bagged synthetic fertilizer
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Controlling Pests:
Whenever you see insects in your garden, remember this: Most are no threat to plants, many are even beneficial, and all of them, even the pests that eat your plants, are an integral part of the ecosystem you are cultivating. But what do you do when the pests seem to have the upper hand? You don't want to enforce a "no-fly zone" with pesticides. They're dangerous for you to have and to use, and they harm wildlife and contaminate water. Instead, use safe, organic techniques and products to keep the pests in balance.
Grow healthy plants. The best defenses against insect attack are preventive measures. Pests target weak or unhealthy plants, so choose plants that are suited to the conditions you are putting them in and they'll be less stressed. Don't let plants be too wet, too dry, or too shaded. Use lots of compost, but be sparing with high-nitrogen fertilizers, if you must use them at all.
Integrate, don't segregate. Mix different vegetables, herbs, and flowers together in your beds. This keeps pests from zeroing in on a whole crop of their target plant.
Encourage Pests' Predators. The most effective and natural way to control pests is to rely on the food chain. Plant herbs and flowers among your vegetables to lure predatory insects such as ladybugs and green lacewings, which feed on flowers' nectar while their larvae consume pests. Put out a birdbath to enlist the appetites of songbirds to your cause. Treat toads, lizards, and garter snakes as welcome allies, too.
Build Barriers. Row cover is a woven fabric that lets light, air, and water reach plants, but keeps pests (including deer) away from them. You'll find it in local garden centers, in catalogs, and online. The best-known brand is Reemay.
Target The Treatment. When prevention is no match for infestation, take the time to choose the right organic tool to solve your problem. Start by making sure you have correctly identified the pest and confirmed it is the cause of the symptoms you've found. Consult your local Cooperative Extension office (csrees.usda.gov) if you need help. 
Then, depending on the pest, you can arm yourself with soap or hot-pepper sprays, horticultural oil, or Bacillus thuringiensis, a naturally occurring bacterium that disrupts the digestion of caterpillars and other leaf-eaters.
Surrender. As we said, insects attack plants under stress. Do you have enough healthy plants to spare the sickly ones? Can you restore sickly plants to robust health so they can resist insect attack? If not, let the pests do their worst, then watch as their predators flock to your garden and protect your healthy plants.
Key To Success: Check the undersides of leaves when applying organic pest control—insects often hide out of sight.
Source of Article: http://www.organicgardening.com/
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