Insecticides used to protect plants against larvae, eggs and pupae of insects. All kinds of drugs are toxic in varying degrees. When used properly, they are fast and effective and does not cause harm to human health and the environment.
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types of insecticides
By way of penetration into the organism pests distinguish these types of drugs:
- delivery - are in contact with any part of the insect body, are most effective in killing the larvae without chitin cover;
- intestinal - fall from poisoned food absorbed into the intestines;
- fumigants - gaseous drugs act via inhalation can be used to destroy rats disinfection greenhouses;
- system - penetrate tissues and destroy plant pests living in the green mass or inside the roots, are highly toxic.
There are drugs, both belonging to several groups, such as systemic contact-intestinal action.
According to the degree of danger to humans are 4 groups. For extremely dangerous (group 1) include fumigants for processing warehouse. Harmful agents (Group 4), characterized by the use as active substance avermectin. It is a natural neurotoxin collapsing within 7 days.
At the suburban areas it is recommended to use chemicals 3 and 4 classes of danger. Their list is constantly being updated with new vehicles or when it detects harmful effects on humans or the environment of the old. In the shop with a good reputation does not sell drugs that have not passed state registration.
Depending on the scale of the defeat of continuous action selected chemicals that kill pests of different types, or selective, designed to deal with some kind of group 1:
- larvae and caterpillars;
- nematodes;
- aphids;
- mites;
- with eggs of insects and mites.
Methods and application rules
Destroying pests such ways:
- spraying;
- embedding a powder or granules in the soil;
- dusting;
- etching the seed;
- fumigation checkers;
- luring the poisonous trap.
Instructions for use of insecticides:
- Before buying a product you need to identify the pest, to find out how the tool at different stages of its development, as well as to check the validity of the chemical shelf.
- If you intend to use an insecticide indoors need to find out whether it is intended for such purposes.
- For work need special clothing - closed shoes, hat or cap, things with long sleeves, long pants or coveralls, rubber gloves. If the instructions indicate that you want to use goggles and a dust mask, it can not be ignored.
- In preparing the solution unacceptable concentration exceeding specified on the packaging. Use a dedicated utensils, water with a temperature of +10... + 16 ° C and neutral acidity. First, the chemical is dissolved in the 1 / 4-1 / 3 parts of total water, and then it is poured and the solution was stirred for 3-5 minutes. Use throughout the day. During work you do not eat, drink or smoke.
- Most drugs are used at an air temperature of 12 +... + 22 ° C. Exceptions are pyrethroids (they can be used at + 7 ° C) and means for killing spider mites (they are most effective at + 24... + 32 ° C). In windy, rainy or foggy weather processing is not carried out.
- It is impossible to spray solution and the like broom means. Needed knapsack sprayer with the rod not shorter than 1.2 m. The nozzle held at a distance of 0.5 m from the plant.
- After working implements washed in soapy saline or acidified vinegar water. Dirty liquid is poured into a specially dug pit at a distance of not less than 15 m from the well. Then you should take a shower, rinse your mouth and wash clothes (apart from other things).
If the station is systematically applied chemicals with the same active substance in pests develop into resistance to it. To prevent this, you need to pay attention to the composition of insecticides and change them every year, selecting means on a different basis.
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