PROSPECTS FOR THE PRACTICE OF USING ORIGINAL LONG-ACTING AGROCHEMICAL PREPARATIONS TO CONTROL POPULATIONS OF PLANT PARASITES

One of the promising high-tech systems for the use of agricultural chemistry can be the development of original forms of agrochemical preparations (fertilizers and pesticides) of prolonged action. The slow-release polymeric composites formed by our technology have a number of advantages. A single injection of preparations during seeding allows avoiding multiple medical top dressings (for fertilizers) and treatments (for pesticides) during the growing season. The most important principle of the effectiveness of using agricultural chemistry is the linking of the timing of top dressings and treatments to the developmental phenophases of both plants and parasites. Much depends on the characteristics of the development of parasites. For example, larvae of cyst-forming nematodes are vulnerable to drugs during migration in soil. However, the cyst-forming nematode of potato develops in one generation for a season, and the cyst-forming nematode of beet develops in 3–4 generations. In the latter case, additional use of modified forms of nematicides is possible. In favor of drugs with prolonged action (apart from a multiple increase in economic efficiency, especially in the event of a shortage of the drug), we should attribute the technological possibility we have worked out to program the action of drugs. We have adopted the following reference terms for prolongation, 1, 3 and 6 months. Technologically, this is achieved by the polymer concentration in the composite. In this case, our method can be used to take into account weather risks.