Dynamics of degradation of residual amounts of propineb and its metabolite propyleneurea in apple fruits

The behavior of propineb and propylentiourea (PTU) in apples was studied in dynamics after treatment withAnthracol, water-dispersible granules (WDG) in 3 regions.The determination of pesticide residues was carried out according to developed and optimized methods.It was found that after 3-fold treatment with the fungicide propineb andPTUdecompose quickly and evenly in fruits in various regions of cultivation. 28 days after the last treatment, the content of the active substance of the drug and its metabolite are at a level below the corresponding of the maximum allowable level (MAL).At the time of harvesting, the studied substances in apples were not found in any of the climatic zones, as well as they were absent in the juice.Based on the data obtained on the decomposition of propineb in apple fruits, the nature of dissipation was established.The half-life ranged from 3 to 8 days.