Archive for the ‘Pests’ Category

 
Aug
04
Posted (ashish) in Control, Pests on August-4-2008

Although groundhogs may seem cute (especially since they find mention in movies such as the popular ‘The Groundhog Day’), they are a menace to gardens; in fact they are actually a serious menace that people often underestimate until it’s too late. While you may not want to mess with them for no reason, they might be secretly eating your crops and destroying your houses without you even knowing it. They are well known for their love of green leafy vegetables. They are also famous for digging up lawns and the underside of outbuildings to set up their burrows, in effect even weakening buildings. So if you see a groundhog in your garden, you know that it’s time you got worried.
The groundhog is a type of marmot, and what marmots are, essentially, are very large squirrels. Woodchucks, having large paws, dig big holes, not to bury acorns but to build tunnels to live in, and they will dig them in any relatively flat area, including your lawn. Adults average about ten pounds. They are strictly vegetarians. They dig large, complex, interconnecting burrows and are excellent diggers.
The holes they dig can be very dangerous, with fractures from snapping of the limbs in such holes not unknown. There are many devices used to get rid of groundhogs, ranging from shooting them (if legal) to getting rid of them so that they do not come back. It is also true that what worked for somebody else may not work for you. Here’s a list of some methods that have been used to control them:
- Groundhogs will assiduously avoid properties where dogs (even little dogs) have free roam. Occasionally, if your dog is very fast, it may force encounters between your dog and the groundhog. However, it is not necessary that a dog will be able to get rid of all groundhogs.
- Simulated urine of predators, such as foxes; supposedly putting some in their burrows scares them off since the groundhogs are very scared of foxes
- Hooking a hose to an automobile exhaust pipe, extending the hose down a burrow, and running the engine until the groundhogs come out; they will then have to be trapped. Or you could go in for fumigation. Fumigation is usually done with either gas cartridges that produce carbon monoxide or with aluminum phosphide pellets. Groundhog fumigation should be done in the spring (late April, early May) before the young leave the nest, and is most effective when moist soil is used to cover the burrows, sealing the gases in and leaving no means of escape for the groundhogs.
- One of the better ways of getting rid of them is to trap them. Different types of traps can be used, but using one that can kill them needs to be checked out whether it is legal (and should not harm other pets or even small children in the vicinity). You can also use a non-lethal trap and release the captured groundhog elsewhere
- Pour human urine around the entrance to the burrow; this persuades the groundhog that this place has gone bad and they move to newer quarters
- Fence your gardens. Use 1”-3” chicken wire or wire mesh fencing, and since these creatures can dig burrows, make sure that the fence is atleast 2 feet below the surface
- Double Bubble gum: Have you seen the bubble gums manufactured under the brand name of Double Bubble? Well, they are not your typical chewing gums. A plant expert one day suggested me to use this particular bubble gum. The truth is that groundhogs love this particular brand of bubble gum very much but the irony is, as soon as they consume this gum, it instantly kills them.
- Place pinwheels around your garden. Groundhogs are scared of movement and having a few pinwheels around is likely to scare them away.
If you are trapping them, then wash your traps with plain old unscented dish soap, and use latex rubber gloves to handle the traps. This way you won’t leave the suspicious smell of human behind.



 
May
30
Posted (ashish) in Control, Organic, Insect, Pests on May-30-2008

Seems like today is the day to get useful information via email, and then publish the same (since this information is concise and useful)

Garlic Oil Spray Target insects: Aphids, cabbage loopers, grasshoppers, June bugs, leafhoppers, mites, squash bugs, slugs and whiteflies. May also help to repel rabbits! Never use oils sprays on Blue Spruce as it will remove the blue waxy coating on the needles! Because garlic contains naturally occurring sulfur it also acts as an antibacterial agent and fungus preventative.

To make: Combine 3 ounces of minced garlic cloves with 1 ounce of mineral oil. Let soak for 24 hours or longer. Strain. Next mix 1 teaspoon of fish emulsion with 16 ounces of water. Add 1 tablespoon of castille soap to this. Now slowly combine the fish emulsion water with the garlic oil. Kept in a sealed glass container this mixture will stay viable for several months. To use: Mix 2 tablespoons of garlic oil with 1 pint of water and spray.

When working with oil sprays you want to monitor the climate conditions so your plants won’t get phytotoxic burn. Use this simple equation: Take the current outdoor Fahrenheit temperature then add to this the percentage of humidity, if the total is more than 140 don’t spray.

Example: Temperature of 80 degrees plus humidity of 67 percent equals 147, don’t spray. You also do not want to spray when temps are above 80F.

Horseradish Pesticide

How about some alternative uses for this invasive plant?
Target insects: Aphids, blister beetles, caterpillars, Colorado beetles, whiteflies and soft-bodied insects. Maybe even slugs.
To make: Bring 3 quarts of water to a boil, add 2 cups of cayenne peppers, a 1 inch piece of chopped horseradish root, and 2 cups of packed scented geranium leaves, any kind. Let mixture steep for 1 hour, cool, strain and spray. Note: this can be made without the scented geranium leaves if you don’t have them to spare.

NOTE: Penn State University announced in 1995 that minced horseradish holds promise in decontaminating wastewater and now says it may clean contaminated soils as well! Penn State’s center for Bioremediation and Detoxification reports that minced horseradish combined with hydrogen peroxide can completely remove chlorinated phenols and other contaminants found in industrial wastes. Experiments involve applying the mixture directly to tainted soils or growing horseradish in contaminated soil and rototilling the roots just before applying hydrogen peroxide!

The cleansing properties of horseradish have been known for more than a decade, however treating a purified form has been far too expensive. This method has proved to be just as effective, but at a fraction of the cost!

Lime Spray

Target insects: Cucumber beetles, mites and general purpose.

To make: Mix 1 ounce of hydrated lime, 32 ounces of water and 1 teaspoon of castille soap. Use up to twice a week.
Marigold Spray (use pot marigold: Calendula officinalis)

Target insects: Repels asparagus beetles, tomato hornworms, leaf cutting and chewing insects, like leaf cutting bees on your roses and lilacs.

To make: Mash 1 cup of marigold leaves and flowers. Mix with 1 pint of water. Let soak for 24 hours. Strain through cheesecloth. Dilute further with 1 1/2 quarts of water then add 1/4 teaspoon of castille soap. Spray target areas.

Orange Peel Spray

Oranges and other citrus fruit contain natural ocurring pesticide compounds called limonene and linalool. These compounds can be used as a treatment for soft bodied pests such as aphids, fungus gnats, mealy bugs and as an ant repellant.

To Make: Pour 2 cups of boiling water over peelings of one orange. Let this steep for about 24 hours. Strain the mixture into a glass jar and toss the peels into the compost. Use this liquid as a spray mixing in a few drops of castille soap on target insects or on ants and their nests. Smells nice too!
Pepper and Herb Dusts

Target Insects: General

Peppers and certain herbs contain the compound “capasaicin” which will irritate and repel many insects. Cayenne, chili, dill, paprika, red and black peppers can be used as dusts. Purchase the cheapest you can find, or grow hot peppers and dill in your garden. Dry them and pulverize them in a food processor. Sprinkle on moist plant foliage and the surrounding soil.

Pepper Spray

Target insects: All-purpose

Just like the pepper dusts a spray made from hot peppers will release the capasaicin compound to repel insects.
To make: Mix 1/2 cup of finely chopped or ground hot peppers with 1 pint of water. Let this sit for 24 hours. Use as is for a soil drench application or strain the mixture through cheesecloth until you have a clear liquid. Add a few drops of castille soap and use as a foliar application. Keep away from your eyes and skin when using.

Tomato or Potato Leaf Spray

Target insects: Repels asparagus beetles and flea beetles.This will kill earworms and maggots and acts as an antifeedent for other insects.



 
May
30
Posted (ashish) in Control, Information, Pests on May-30-2008

Ants

To discourage ants, sprinkle their nest with red pepper, eggshells, bone meal, talcum powder, wood ash, sulphur, blood meal or coffee grounds or diatomaceous earth. Mix 1 tbsp. of bakers’ yeast and 2 tbsp. of sugar in 1 pint of water; spread this mixture on pieces of cardboard, and place them around your yard. Pile up instant grits or corn meal in and around their hills; once eaten, grits expand and no more ants. Mix equal parts powdered borax and powdered sugar. In the garden, plant pennyroyal, spearmint, southernwood, and plant onions around beans as they repel ants.

Aphids

Spray plants with ‘bubble bath’ of soapy water; rinse off after animals are dead. Order from garden store: green Lacewing adults and larvae; “defatted” Ladybug adults and larvae. Plant nasturtium in the garden. Cut up 3 pounds rhubarb or elder leaves. Boil ½ hour in 3 quarts water. Strain and cool. Dissolve 1 oz. soap in one quart water. Mix two solutions and spray. In garden, plant tansy.

Asparagus beetles : Marigolds keep them away.

Botrytis Mold

Botrytis mold is one of several plant diseases that can be overpowered by the beneficial bacteria present in fermented compost tea.
1. Mix one part manure compost that includes some rotted manure (horse, cow or chicken) with five parts water. A plastic milk jug works well.
2. Allow the mixture to sit and ferment in a shady place for ten days to two weeks. The effectiveness of the tea is highest when the tea ferments for a full two weeks.
3. Filter the mixture through cheesecloth to remove large particles. Do not attempt to remove all residue for some residue gives the tea extra disease-fighting punch.
Warning: This stuff can smell terrible - do your straining outdoors! The odour does vary from batch from batch.
4. If needed, you can dilute the tea with more water, but keep the mixture at half strength, minimum.
5. Either spray on leaves with a pump or pressure sprayer, or dribble it on with a watering can. Coat both sides of leaves.
6. Reapply after two to three weeks.
7. The residue left after the tea is strained may be poured out on the ground below plants.

Cabbage Loopers

Plant one of these insect repelling plants between your cabbage and carrots: sage, rosemary, leeks, hyssop, mint. Buy Bt from garden store. Smash egg masses of moths.

Cabbage Worms

Plant rosemary, thyme, or hyssop. Cover plants with cheesecloth to keep adult butterflies from laying eggs. Sprinkle rye flour over and around plants when covered with dew.

Carrot Flies

Plant one of these insect repelling plants between your cabbage and carrots: sage, rosemary, leeks, hyssop, mint. See cutworms for other possible remedies.

Carpenter Ants

Prevent an infestation by repairing wood damaged by moisture, ventilating damp areas, cleaning gutters and storing firewood on raised platforms away from the house, try one of the organic insecticides included in this packet.
Alternative Pesticides: Pyrethrins. Use less toxic bait stations. Small chunks of bait are usually carried back to colonies where they poison other ants in the colony. Bait stations will help get rid of the source of the problem, and will reduce exposure to non target species. Northern Flickers, Pileated Woodpeckers are known to feed on carpenter ants. Swallows swifts and nighthawks will feed on winged ants.

Caterpillars

Use ’stickum’ made from 1½ cups rosin (from athletic supply store), 1 cup linseed oil, 1 tbsp. Melted paraffin, mixed together and painted around trunks of trees.
Cats
2 parts cayenne powder
3 parts dry mustard powder
5 parts flour add sufficient water
*** use as a spray on the plants and yard areas where these animals are causing a problem. Bury chicken wire under the ground to discourage cats from digging (plants will grow right through it)

Put Cayenne pepper, orange peels, or hang dried rue leaves, mothballs, and dry Borax® soap in the toe of old nylon stockings in various areas of your garden.

Chinch Bugs

Damage: Cause large round patches in the lawn which are yellow in the centre and greenish around the edges. They are found in the sunny areas of the lawn. Adults become more active when temperature is above 70°F. They live above the ground and suck the juice out of the stems. Cut top and bottom out of a tin can and push it into the greenish area of the affected lawn. Fill the can with water, any chinch bugs will float to the top.

Natural controls: (Garden) Plant soybeans near corn as a trap plant. Try planting St. Augustine Grass or endophyte enhanced grass (grass enhanced with the fungus (Acremonium coenophiallum)) which is more resistant to surface grazing by insects. Keep lawn free of thatch, use diatomaceous earth, spray with soapy water once a day for 10 to 14 days, or with a handful of wood ash and lime dissolved in 8L of water. Spread a flannel sheet over the treated area, and wait 15 to 20 minutes; the bugs will be clinging to the sheet and you will be able to drown them or suck them up in a vacuum cleaner. Insecticidal soaps, pyrethrins can be used, Neem, Bigeyed bugs, Lace Bugs and others will prey on chinch bugs. The fungus Beauvaria bassiana (Naturalis-T) can also be effective.
Codling Moths (apple worms)
Hang bright red plastic apples coated with “stickum” (see Caterpillars for stickum recipe)

Cutworms

Damage: will cut off grass and transplants (for vegetable gardeners) just above the ground. Find them in the soil curled up like a sleeping cat.

Natural Controls: Buy Bt from garden store. Smash egg masses of gypsy moths. Sink paper cups (bottoms removed) around seedlings to block cutworms. Parasitic nematodes, diatomaceous earth, physical methods. Plant tansy.

Dahlia borers

Goldenrod planted nearby will attract them. Try planting garlic, tansy or onions.

Deer

A good tall fence is the best bet. Try blood meal, thorny bushes, ‘Deer Buster’ tonic - 2 eggs, 2 cloves of garlic, 2 tbsp. of cayenne pepper and 2 tbsp. of Tobasco Sauce® in 2 cups of water. Let set for 2 days, then spray your plants to the point of run-off.

Dog Damage Spots

To repair, overspray 1 cup of very soapy water per 20 gallons of water, and then apply granulated gypsum over the area (use small amount and increase until desired level reached). One week later, overspray the turf with ‘Turf Builder’ tonic - 1 can of beer, 1 cup of ammonia, and 1 can of regular cola in your 20 gallon hose-end sprayer.

Earwigs

Remove their hiding places - piles of plant material, boards/wood, bricks, large rocks, debris, leaves and clods of dirt during the day. Eliminate refuges such as ivy, weeds. Keep debris and weeds away from the trunks of fruit trees. Encourage natural predators (birds and toads). Fill low-sided, old tuna or petfood cans with ½ inch of vegetable oil; place several cans around garden. When full; just dump and refill. Place rolled newspaper, corrugated cardboard, or hose pieces around plants at sunset. Next morning shake earwigs into bucket of soapy water, gas or kerosene. Continue as needed.

Fairy Rings

The fungi create circular patches of dead grass with an outer ring of dark green grass. Very difficult to eradicate. To control the disease, spike the rings to a depth of 15cm with a spading fork. Clean the fork carefully with rubbing alcohol after each use. To avoid contaminating the rest of the lawn you must begin spiking outside the dark green ring and work inward toward the yellow area. Pour soapy water into the holes daily for a week, and then clean water every day for two months. To get rid of the rings completely, remove the soil to a depth of 25 to 45cm on either side of the green ring. This is an exacting task but it is the only way to eradicate the fungus. Be careful not to drop any contaminated soil or grass on the lawn , or the disease will spread elsewhere.

General Insect Control

The ladybug, spiders, bees, and wasps will eat or reduce numerous pests. Try to find pheromone or other traps such as sticky traps - place 6 by 6 inch sheets paper or cardboard covered with a sticky material like castor oil, natural gum resin, or vegetable wax. Encourage parasitic or beneficial insects. Several plants placed throughout your garden naturally deter insects. They include marigolds, garlic, onions, nasturtiums, geraniums and pansy. If nuisance bugs persist, consider planting endophyte enhanced grass (grass enhanced with the fungus (Acremonium coenophiallum)) which is more resistant to surface grazing buy insects. Set your mower at it’s highest setting as longer blades of grass produce more energy and encourage greater root growth; and will be more tolerant to insect attack. Avoid overfertilizing and control thatch buildup in your lawn. Pesticides used to control lawn pests may effect helpful bird species. If problems still persist try sabadilla, neem,
rotonone, or pyrethrins. Limit treatment to infected plants as many helpful insects and related creatures are killed by any pesticide, even a soap spray. Use a milk type pail, fill with lukewarm water, and add approximately 2 teaspoons of Peppermint essential oil.
Grubs {May/June Beetles, Japanese Beetles}
During late spring or early fall, they chew the roots off the grass and keep going. Skunks and racoons will cause golf ball sized holes by digging for grubs or look for mole tunnels. During summer look for metallic-looking green and bronze coloured beetles (Japanese beetles) eating flowers or vegetables. They lay their eggs in the soil and the eggs become grubs. Cut and roll the sod like a carpet, if more there are more than a few grubs per square foot, it’s a problem.
Natural controls: Expose the grubs and let the birds pick them, parasitic nematodes, spread a mixture of diatomaceous earth and powdered soap at a rate of 6 to 9 kg per 100m2, or hand pick beetles into a jar (soap or kerosene and water) and drown them. Every 2 weeks throughout growing season overspray with a mixture of 1 cup of very soapy water, ½ cup of antiseptic mouthwash, and a ½ cup of chewing tobacco juice, in a 20 gallon hose-end sprayer until early August. Unfortunately, grub control is a never- ending battle. Beetles lay their eggs in compacted soil, so aerate, plant resistant grasses such as fescues. Milky spore disease (microbial insecticide made up of two species of bacteria: Bacillus popilliae and B. lentimorbus) kills grubs, and will remain to protect your soil in the future. Use pheromone traps to attract adults and prevent breeding. Robins and Flickers will probe for grubs. See Japanese beetles for additional info.

Gypsy moths

Buy Bt from garden store. Smash egg masses of gypsy moths. Parasitic nematodes, diatomaceous earth, physical methods.

Japanese beetles

Plant garlic, larkspur, white geraniums, rue or tansy near roses and raspberries. Plant soybeans, zinnias or white rose near other crops to lure beetles away from crops. Buy beetle traps or “milky spore disease” bacteria (”Doom”) from garden store (takes 2 to 3 years for full effect). See grubs for additional info.

Lawn Diseases

Always remove any grass clippings if your lawn shows any sign of disease. Planting a mixture of grasses reduces the risk of serious infection since each grass variety is vulnerable to different diseases.

Maggots

Radishes lure them away from sprouting corn and cabbage.

May beetles

See grubs for more info.

Mealy bugs

see Aphids for control. Make a spray of 2 parts rubbing alcohol to 1 part water, and use it to kill mealybugs on houseplants.

Mexican bean beetles

Plant potatoes nearby to lure them away or repel them with rosemary, marigolds, petunia, or summer savory.

Millipedes

Punch holes in both sides and bottom of tall juice can, bury upright in garden border, fill with carrot or potato peelings. Empty can weekly.

Mice

Plant spurge or an herb called “mole plant” here and there to repel them. Fresh peppermint and spearmint plants, placed strategically throughout your home and yard, will keep majority of rodents and pests away from your home and yard. We use a milk type pail, fill with lukewarm water, and add approximately 2 teaspoons of Peppermint essential oil!

Moles

First and foremost, you need to eliminate their major food-grubs. Plant an herb called “mole plant”, daffodils, spurge and castor beans; here and there to repel them. Moles are invading your garden in search of worms and grubs. They actually help to loosen dirt in areas where it tends to be compacted. Place a cutting of human hair (use own or go to the Barber shop) inside the tunnel. Place used kitty litter in their tunnels, tells them predators are lurking. Mix a small bottle of castor oil with MiracleGro Fertilizer and spray. Spray every 30 to 60 days. Add red pepper to the mixture to ward off rabbits and deer. Natural mechanisms that look similar to windmills make a vibratory noise the moles hate and won’t come back as long as it is in place. We use a milk type pail, fill with lukewarm water, and add approximately 2 teaspoons of Peppermint essential oil.

Mushrooms

Mushrooms are caused primarily by decaying wood in the soil, and they will soon disappear if picked or raked. Aerate area by hand to poke a lot of holes in the turf. Thoroughly drench the area with soapy water, then give a light dusting with dry laundry soap.

Nematodes

African or French marigolds give off chemicals which get rid of them. Also plant salvia scarlet sage, dahlia, calendula, pot marigold or asparagus.

Onion flies

Plant onion ’sets’, not onion seeds.

Pickleworms

Plant bush squash near cantaloupes and cucumbers. Worms will gather on squash for easy killing.

Plant bugs

Plant sunflowers nearby to lure away from potatoes. Bugs can easily be picked off and dropped into soapy water.

Potato beetles

Plant horseradish or flax to repel. Plant eggplants next to potatoes to attract them, then pick them and drop in soapy water.

Potato Bug

You probably planted your spuds in bare soil and kept them weeded. That is an open invitation to the Potato Bug (Colorado beetle). The easiest way is to lay the “seeds” on the bare ground and cover with a minimum of ten inches of rotten hay, top up as season advances. The deep mulch interferes with the bugs’ reproductive cycle. At harvest time, pull up the dying stalks and pick off the potatoes as if they were apples. Keep the smaller ones for seed next season; they are better than cut pieces. Plant a few beans near potatoes to attract the beetles. See Lebia grandis a predator or the potato bug for more info.

Slugs/Snails

Build a house for toads and frogs. Encourage beetles who also eat slugs. Plant onions and marigolds to repel them. Place plastic bottle cloches or wrap loose aluminum foil around plants, or sprinkle circles of lime, eggshells, diatomaceous earth, ashes, gravel or sawdust around plants or 4 inch high “fence” of copper strips. Place saucers or plastic pots of milk or beer, grape juice and maybe even vinegar(they drown themselves in ecstasy); sink the saucers so they are level with the ground. Place cabbage leaf, tiles, wet cardboard or an old board on the ground, they will gather underneath and then can be disposed of, or collect them by hand at night or on damp days and dump in salt water or kerosene. Shake salt on them and watch them fizz. Squash all eggs you find while digging. Plant prostrate rosemary, wormwood.

Sow bugs

Remove their hiding places - piles of plant material, boards/wood, bricks, large rocks, etc.

Squirrels
½ ounce Tobasco sauce®
1 pint water
1 tsp. Chili powder dash of dish soap
*** use as a spray on the plants and yard areas where these animals are causing a problem.
4 oz. of castor oil
5 oz. of Tabasco Sauce®
8 oz. of Murphy’s Oil Soap®
1 quart of warm water.
Use 1 cup in 20 gallon hose-end sprayer, spraying soil, leaves, and tree trunks thoroughly to point of run-off. Fox Urine is also a very effective commercial repellent.

Tent Caterpillars

Buy Bt from garden store. Use ’stickum’ (see caterpillars made). Parasitic nematodes, diatomaceous earth, physical methods.

Thrips

see Aphids for control.
Red spider mites
see Aphids for control. HATE WATER won’t hang around when they are constantly subjected to this.

Squash bugs

Plant tansy to repel them.

Tomato worms

Plant asparagus, marigolds, opal basil or borage near tomatoes to repel them. Dill lures them away.

Webworms

Damage: one or two-inch dead patches. Break up the patches to see if there are light brown caterpillars and their nests. Birds and moles feeding on the lawn are a sign of webworms.

Natural controls: Apply 25mL of pure liquid detergent or 50g of hand soap per 4L of water once a week for a few weeks, Palm-oil soap is not effective, garlic juice and 4mL of rubbing alcohol in 4L of water, spreading wood ash, lime or rye flour on the caterpillars will smother them, physical methods (finding and squashing). Webworms like thatch so remove it, and aerate the soil. Be sure to reseed any bare spots.

Weed Control

The presence of weeds is often a sign of fertilization problems or lawn care problems. Thistle, plantain, and dandelions must be hand pulled (mowing isn’t complete). A special dandelion weeder with a forked blade is helpful. Lamb’s quarter and barnyard grass disappear if the lawn is mowed regularly to 7cm. Mallow, purslane and foxtail are found in new lawns, but they disappear as the grass becomes thick and healthy. Some soaps may be effective in killing weeds. Marketed weed killers have a higher proportion of soap to water than those sold to kill insects. Pour very hot water on the weeds (caution this may also hurt grass). Use these techniques to remove weeds: hand weeding, hoeing, cultivating, mowing, flamers (take care when using flamers around mulches, never use them in dry, fire-prone areas), ground covers, and mulches. Apply this tonic before weeds pop-up:
1 cup of Plant Shampoo
2 tbsp. of instant tea
1 cup of hydrogen peroxide
Mix in a 20 gallon hose-end sprayer, top off the jar with water.
Whiteflies (on houseplants) Hang yellow strips of cardboard coated with “stickum” (see caterpillars), or buy a “tack trap” at a garden store. In garden plant nasturtium, marigold.

Wireworms

Punch holes in sides and bottom of tall juice can, bury upright in garden border, fill with carrot or potato peelings. Empty can weekly. Plant white mustard, buckwheat or woad.



 
May
30
Posted (ashish) in Control, Organic, Pests on May-30-2008

These tips are from yet another email, and the information is so useful that I thought that I should post it:

ORGANIC TIPS - Getting rid of the troublemakers is one way to help rid diseases; especially if you want to grow organically! Remove varieties susceptible to diseases and you will remove the source of infections and overall disease problems.

PARASITIC NEMATODES are microscopic eel-like worms that naturally occur in soil. They can be purchased to reduce levels of many insects. Some varieties are insect specific thereby reducing harm to non target insects.

PHEROMONE TRAPS use specific (sex hormones) attractants to lure insects to where they they are trapped. They also monitor when insects appear on the scene. Sticky cards are a great help for insects such as whitefly (yellow) and midges (blue cards).

PYRETHRINS kills many soft-bodied and some hard-bodied insects and causes most flying insects to ‘drop’ almost immediately upon exposure. It is also highly irritating to other insects and is utilized as a pest dispersion agent. Pyrethrins have a low level of toxicity, and are among the few insecticides that are cleared by the EPA for use around food handling and preparation areas. However, it is not harmless; mix, apply, and dispose as carefully as you would any other pesticide. Pyrethrins rapidly degrade when exposed to light or moisture, so do not persist for long in the environment. Some pyrethrin-based products are combined with more toxic pesticides.

ROTONONE [update: Rotonone is linked to causing parkinson disease and is therefore not recommended]. Rotonone acts as a stomach poison and as a contact insecticide. Not toxic to honeybees, but will kill some beneficial insects. Registered for use against most chewing insects on many vegetables and some fruits. Different brands and formulas are available for various pests. Both liquid and dust are available commercially. It has been fatal to mammals if inhaled over extended periods. Rotenone is effective against a wide range of insects and has a short residual life.

RYANIA is a stomach poison, which will cause an insect to undergo a long period of inactivity before its death. Its residual period is longer than other botanicals. Ryania is moderate in acute or chronic oral toxicity in mammals, this is why more attention has been given to this insecticide in recent years.

SABADILLA can be applied up to one day before crop harvest. It is effective against the true bugs, leaf feeding caterpillars, Mexican bean beetles and thrips. Sabadilla dust is considered among the least toxic of the various botanicals, however, be sure to follow all precautions listed on the product labels.

SOIL SOLARIZATION - Uses plastic to solarize the soil. It may destroy the soil structure but, can be beneficial. It is very useful in weed control and for clearing an area of vegetation without the use of herbicides. The beneficial soil organisms can take more heat versus the harmful soil pathogens allowing them to make a speedy return after solarizing an area. The plastic concentrates the sun’s energy which heats the soil to a very high degree, sterilizing it. Thus killing off soil pests, disease and weed seeds. Depending on the climate solarization has been shown to control certain wilts, crown gall diseases, nematodes, grassy weeds and weed seeds. Nematodes have the ability to survive higher soil temperatures. The deeper the heat penetrates the soil the better the results ie. with optimum conditions disease & weed control can last up to three years.

Soil Solarization Technique:

Best done during the heat of the summer. Till the soil to a depth of at least 8 inches. Rake out all debris, smooth the area as level as possible. Then soak the soil to a depth of 18 inches. Make a slight depression at the boundary of the bed. Stretch some clear 4 mil plastic over the bed as tightly as you can, adhering it to the soil. Use rocks, more soil, landscape pins, etc to secure it snuggly in place. Now; let it cook for at least 4 weeks (cooler zones allow 6 to 8 weeks). Remove the plastic, and till the soil lightly before planting.

In more northern climates add manure prior to putting down the plastic to speed up the process by increasing soil temp as the manure decomposes. This also increases the level of gaseous ammonia in the soil, thus giving the process an extra kick! Use two layers of plastic to create more of an insulating effect by trapping more heat. Incorporate shredded vegetables from the cruciferous family (broccoli stems, cabbage trimmings etc). These vegetables may have an effect in ridding the soil of blights. Let the trimmings dry out in the sun until brittle, mix them into the top 6 inches of soil, proceed with the process.

SULFUR is effective on flowers, fruits, and vegetables in preventing powdery mildew, rust, and black spot. It can also control mites and several insect pests. It is toxic to a few plants, including cucumber, raspberry, and apricot, so check the label carefully. Keep in mind that sulfur is sometimes combined with other pesticides (which have higher toxicity levels). Lime sulfur (calcium polysulfide) is effective against the diseases and pests noted above and can be used in combination with horticultural oil (as dormant spray).

SYRPHID FLIES have abdominal stripes like wasps and bees but have not sting. The stripes protect them against would be predators. Many species of Syrphid Flies are pollinators, second only to bees. They are distinguished from bees by their ability to hoover like little helicopters. Syrphid or hoover fly larvae feed exclusively on aphids. Syrphids lay most of their eggs on plants that are heavily infested with aphid colonies. They lay between 400 to 1000 oblong white eggs which hatch within days. One larvae can consume 200-800 aphids in its 7 to 10 day life. Syrphids produce many generations a year and are considered a very effective predator of aphids.



 
May
30
Posted (ashish) in Control, Non-chemical, Information, Insect, Protect, Pests on May-30-2008

FLAME WEEDING - This method can be done with a small propane torch, however for larger areas one of the weed flaming torches is an excellent tool. Weed flaming has long been a practice on organic farms in Europe. The point of flaming is not to charbroil the weeds, but heat them just enough that they wilt. This will heat up the cell sap in turn causing them to expand and rupture. Flaming can be used as a spot treatment in lawns. The grass is going to get singed, however it will bounce right back. You may need to flame tough perennial weeds a couple of times to get rid of them. You will have to practice to get the technique down. Keep some water handy when you are flame weeding!

HOREHOUND LEAVES(Marrubium Vulgare) like many varieties in the mint family, the many tiny flowers attract Braconid and Icheumonid wasps, and Tachinidin and Syrid flies. The larval forms of these insects parasitize or otherwise consume many other insects that we consider pests. A hardy plant; it grows where many others fail to thrive it survives all but the harshest winters, and even then will selfseed effectively. Blooms over a long season, attracting beneficial insects almost as long as you are likely to need them. For best results use horehound directly as a companion plant. (Tomatoes are “encouraged” by growing horehound nearby). This applies to peppers and garden variety members of the potato family.

INSECTICIDAL SOAPS are totally bio-degradable and environmentally safe, however, kills beneficial insects as well. The spray penetrates their bodies and causes cell membranes to burst. Spray only those plants exhibiting symptoms. Works as a smothering agent on a wide variety of insects: aphids, mites, white fly, scale, leafhoppers and others. Safe to use up to the day of harvest. Must be sprayed directly on pests for control. Spray the entire plant thoroughly and repeat applications frequently. Soft water produces a sudsier spray that will reach all surfaces of a plant.

LEBIA GRANDIS (Coleoptera: Carabidae) belongs to a large family of beetles containing approximately 40,000 species. Forty-eight species occur in North America. The life history is known for less than 10 of the North American species. The adults are predators and first instar larvae are parasitoids of chrysomelid beetles.

Appearance: Lebia beetles are usually colourful as adults and range in size from 2.5 to 14 mm in length, depending on the species. Head is usually pale (with a reddish tinge) as are mouthparts, antennae, and thorax. Abdomen is mostly black with metallic blue, purple, or sometimes greenish luster to the elytra (wing covers). Legs are entirely pale with a reddish tinge.

Lebia grandis first instar larvae are pale to tan in colouration, heavily sclerotized (hardened), with well developed appendages, mouthparts and antennae, as is typical for carabid larvae. Body length ranges from 3 to 4 mm and width is about 0.5 mm. The second instar larvae undergo a gradual degeneration of appendages, develop a distended body with reduced sclerotization (a simple form of hypermetamorphosis), eventually bearing little resemblance to the first instars.

Pests Attacked: Lebia grandis is an indigenous natural enemy of the Colorado potato beetle, Leptinotarsa decemlineata. In fields of cultivated potato, adults are specialist predators of all immature stages of L. decemlineata. However, note that in no-choice feeding trials in the laboratory, L. grandis adults devoured the larvae of the asparagus beetle (Crioceris asparagi). {Neither adults nor larvae of C. asparagi are known to feed on potato plants.} L. grandis larvae are specialist ectoparasitoids of L. decemlineata mature larvae and pupae in the soil.

NEEM when sprayed to foliage often deters leaf-feeding insects (caterpillars). It apparently affects the hormones many insects need to develop, killing them as they attempt to molt or emerge from eggs. Its demonstrated safety to humans (used as toothpaste in India), has recently exempted Neem from food-crop restrictions, by the EPA; thereby enabling manufacturers to market its use on edible or ornamental plants.



 
May
30
Posted (ashish) in Control, Pesticide, Information, Pests on May-30-2008

I was hunting for some information about pesticides, then came across this email (sent as part of an email group). I found this information useful, and hence decided to post this so that other people might find this useful as well:

BT Bacillus Thuringiensis

1. Bt (Bacillus thuringiensis) is a naturally occurring, soil borne organism that paralyzes and destroys the stomach cells of insects that consume it especially larvae of flies and months. At present Bt is the only “microbial insecticide” in widespread use of insect control. Bacterial agents are effective in controlling insects in the larva stage only. The larvae is usually a caterpillar or worm and you must get it early at this stage both to eliminate the pest and to avoid too much damage to the leaves. This type of Bt kills many leaf-eating caterpillars–including those that will become butterflies. If butterflies are desired, try to use Bt only on the foliage of plants infested with a leaf or needle-eating larva. You’ll usually find the pests on the undersides of leaves and are usually the same color as the leaf so as not to attract predators. Therefore Bt should be applied to the UNDERSIDES of leaves because Bt must be ingested to be effective.

2. Bt is broken down faster in sunlight. Application to the undersides of the leaf surfaces will prolong Bt’s activity. High temperatures do not encourage Bt’s breakdown.

3. After the Bt spores are ingested, they grow and reproduce, producing crystalline toxins. The crystalline toxins paralyze the digestive tract of the larvae causing it to cease eating. Time of death can range anywhere from 12 hours to 5 days after ingestion. This depends on the amount of Bt ingested, the size and variety of the larvae and variety of Bt used for control. There are different strains or varieties of Bt available that have been selected for the control of specific insects. For roses use Bt variety kurstaki (BTK). This controls the European corn borer, tomato hornworms, fruitworms, cabbageworm, cabbagelooper, spring and fall cankerworm, spruce budworm, and other caterpillar-like larvae. Other Bt varieties like San Diego (BTSD) controls early larvae of the Colorado potato beetle, Bt variety tenebrionis coeopteran (BTT) has been developed for the control of the Colorado Bean Beetle while in its larvae stage and Bt variety israelensis (BTI) controls mosquitoes,
black flies and fungus gnats.

4. Bt has gained well-earned popularity because of its distinct advantages over other pesticides such as:

(i) Hazards to humans are negligible (avoid inhalation or contact with eyes or open wounds).

(ii) Bt can be used right up until harvest on vegetables, this allows for a longer-term control. There is no waiting period from time of application before re-entering the field.

(iii) Beneficial or non-target insects are not harmed.

(iv) Insects that ingest the Bt and later die from it are not dangerous to birds or other animals that may feed the dead insect. (v) Not known to cause injury to plants on which it has been applied and is not considered harmful to the environment.

Other Pathogens: The only other possible pathogen I was able to find is the Pheromone Mating Disruption. It lures the insect to it where they feed on a Pathogen that affects their ability to mate, in turn reducing insect population.

*Note: Relying on any one pesticide can lead to the build up of resistance in the pest population. Use of other insecticides and cultural control methods should be used to slow down or eliminate the possibility of resistance developing.

CORN GLUTEN - You may have heard the product “Amaizing Lawns” which has a pre-emergent herbicide effect on lawn weeds in the early spring when they are germinating and is also a fertilizer based on corn gluten. It works on the more common turf weeds and crabgrass. Corn gluten, a protein found in poultry feed, is a by-product of the corn milling process. If you can find source of corn gluten (feed mill companies) you can try it yourself. Here’s how:

Apply 20 pounds of the powdery gluten substance per 1000 sq. feet of turf area, using a fertilizer spreader with the setting adjusted as needed. When you are done water the gluten lightly into the surface, which will help it latch onto the germinating seeds.

DE (DIATOMACEOUS EARTH) is a non toxic flour-like powder made from fossilized skeletons of micro-organisms called diatoms. The sharp edges of the powder cuts the bodies of the insects, causing them to loose their waxy coating, dehydrating them, causing death. Wear a paper mask and gloves. Commercially available products may contain chemical pesticides so read the labels carefully.

DORMANT OR MISCIBLE OILS/SPRAYS mix with water when heated or agitated. Used as smothering agents for- larva, adults, pupae and eggs. Sucking insects such as thrips, scales and aphids are primary targets and also work to control spider mites. The oil forms a thin layer over the eggs, the insect and suffocates them. Only use dormant oil when temperatures are above freezing for at least 24 hours; spray each plant and the ground as well. Spraying should be done immediately after pruning in spring -plants should not have started to grow or bud out; and again in late fall when the leaves drop (usually late Oct.). Dormant oils do NOT control diseases and can be used every two to three years to provide the same control as yearly applications. This application is essential if you are having spidermite problems.

1 cup of liquid dish soap 1 cup of chewing tobacco juice 1 cup of antiseptic mouthwash Mix in 20 gallon hose-end sprayer, filing the balance of the sprayer jar with warm water. Apply this soap solution to the plants, and then use a dormant spray oil over the top. In early spring, before the buds swell up and open, repeat these steps.



 
May
17
Posted (ashish) in Control, Ants, Pests on May-17-2008

When searching for information about carpenter ants (identification, control, and other such information), I came across this link that provides some information in this regard, and should help you to learn more about this problem. Here are some excerpts from this site:

The presence of a few foraging ants in the home, or 1 or 2 winged queens during swarming times does not mean you have an infestation. These foragers may merely be scout ants seeking food or nesting sites or queens that have flown in an open door.
Foraging ants have been seen entering homes along telephone wires or along branches touching the roof or even from ground trails that come under a door. In such cases, the house may be a nesting area.
If ants are coming in, there may be a nest outside the house and eventually they may establish satellite colonies in some part of the structure. Be certain they are carpenter ants and not moisture ants, termites or yellowjackets.

Most infestations were in houses with these characteristics:

* Wood frame
* Crawl space
* Cedar or plywood siding
* Moderately to gently sloping roof
* 5-25 years of age
* Vegetation (trees and shrubs) surrounding the house
* “Structures located near the edge of the forest were more liable to attack than those located further away.” This is because the ants which have well-established nests in trees or stumps can easily move to the nearby house and establish satellite colonies.



 
May
17
Posted (ashish) in Control, Ants, Pesticide, Plants, Pests on May-17-2008

If you are infected with ants in your plants, then you have a serious problem. This is the link of a commercial site that will help in this regard. This site has descriptions and recommendations for control of the more common household ants such as the the: Argentiine Ants Carpenter Ants, Red Fire Ants, Ghost Ants, Odorous House Ants , Pavement Ants and Leaf Cutter Ants.
You will also find links to other entomology sites concerned with ants and a handy link to determine the difference between the termite or the ant.

Unless you can treat the nest directly, spraying is not an effective solution for small ants, unless you use a nonrepellent insecticides or “undetectable” liquid treatments such as Dominion 2L, Termidor or Phantom. Unlike older insecticides, nonrepellent insecticides can’t be smelled, tasted, or even felt by pests. So they crawl through the treated area, not knowing that by ingesting treated materials or merely contacting the insecticide, they’ll die.



 
May
17
Posted (ashish) in Flies, Pesticide, Organic, Fruit, Pests on May-17-2008

Fungus gnats in plants is something that people get very worried about. They are fearful about what these insects can do, and get thoroughly irritated over their presence. In addition, there does not seem to be an easy way to get rid of them permanently, and dosing plants with a lot of insecticide does not work a lot of times. So, here is an article that talks about this a bit further. Of course, if you know of other resources that can help in this problem, please do leave a link in the comments. Here are a few excerpts from this article (link):

Fungus Gnats look like fruit flies, commonly they are found at the base of indoor potted plants. They are small silver/blackish flies that also resemble a sandfly. Fungus gnats love wet soil and decaying plant material. Fungus gnats search out moist soil in which to lay their eggs. When the eggs hatch, the larvae will feed on the roots of your plants.
Do not overwater!!! The easiest way to prevent fungus gnats is to water your plants properly. Overwatering, which causes your potting mix to remain moist for extended periods of time, seems to attract fungus gnats. A store bought solution is BTK an organic bacterial application that will rid you plants of fungus gnats without causing you harm.

I found this article useful, and am hopeful that you will find the link provided useful.



 
May
16
Posted (ashish) in Pesticide, Organic, Pests on May-16-2008

Traditional pesticides are based on chemicals, and over the years, it has been realized that the usage of these chemical-laden pesticides have caused harm to humans and to animals. For example, the banned pesticide DDT has been found almost all over the world, and nowhere is the presence beneficial in any way. Towards this end, there has been an increasing movement towards using organic pesticides, stuff that is not full of chemicals. Also, on a commercial note, as people find that organic farming is getting a premium and commands a good commercial value, there will be an increasing swing towards exploring natural means of pest control and management. Here is one study that evaluates the use of pepper for this purpose:

Research is needed to provide alternative pesticides with minimal impact on human health and the environment. Farmers around the world have long used plant extracts to protect food and fiber from insects and mites. Peppers have shown particular promise as a source of botanical pesticides:
* Powdered chili pepper deters the onion fly, Delia antiqua, from laying eggs.
* A chemical from from hot peppers reduces growth of the spiny bollworm, Earias insulana and may repel cotton pests.

It always make sense to study new methods of organic techniques; and this could be one of them.