The behavior of propineb and propylene thiourea (PTU) in apples was studied in dynamics after treatment with Antracol, water-dispersible granules (WDG) in three regions. The determination of pesticide residues was carried out according to developed and optimized methods. It was found that propineb and PTU decompose quickly and evenly in fruits in various regions of cultivation after threefold treatment with the fungicide. The content of the active substance of the preparation and its metabolite were at a level below the corresponding maximum residue level (MRL) 28 days after the last treatment. At the time of harvesting, the studied substances were not found in apples in any of the climatic zones and 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.
Chermenskaya et al. (Sun,) studied this question.