Аннотация
This abstract describes a research paper devoted to optimizing the process of defoliation (artificial leaf shedding) of cotton, which is critically important for machine harvesting.The focus is on magnesium chlorate ($Mg(ClO_3)_2$), which is a classic mild defoliant. Unlike harsh drugs, it does not cause instant drying of the plant, but stimulates the natural processes of aging and leaf fall. The work highlights the relevance of the production of such drugs directly in the Republic of Kazakhstan, which reduces the dependence of the agricultural sector on imports. The novelty does not just describe the existing production, but also suggests a technology for producing complex-action defoliants.Complexity usually implies the addition of physiologically active substances (for example, nitrogen fertilizers or growth regulators) to the composition.This allows you to reduce the consumption rate of magnesium chlorate and at the same time prepare the plant for the ripening of the pods.The work includes biological control — checking the defoliating ability on live cotton plants.