Полевая оценка эффективности применения нового десиканта Mолоток, BP в Ленинградской области

Abstract

In this study we assessed the effectiveness of the new desiccant Molotok, VR for the four potato varieties. Among them, Colettee and Lomonovskiy varieties have sparse leaves, Red Scarlett and Udacha varieties have dense leaves. During the trials in 2016–2017, the technology of the treatment with diquat bromide was developed and the regulations for using the desiccant Molotok were optimized. The trials for the Molotok were performed with the application rate of 2.0 l/ha for single-time use and the application rate 2.0 l/ha + 2.0 l/ha for double-time use by spraying of the cultivated plants and weed plants two weeks before the potato harvesting. We recorded the strong drying effect on potato plants in 4–5 days after the single use of desiccant Molotok (2.0 l/ha) for the plantings of sparsely leaved potato varieties. Complete drying of potato plants was observed in 10–11 days after the spraying. It was also found that the potato plants were very dry in 4 days after the second spray of the plantings with densely leaved varieties. The potato plants were completely dry in 11–16 days after the last treatment with the test desiccant.