Assessment of the biological effectiveness of insecticides on canteen carrots in the Bryansk region

Abstract

Relevance. The purpose of the research is to study the effectiveness of the use of pesticides against the most harmful types of pests (carrot fly and willow–carrot aphid) when cultivating it in the Bryansk region.Materials and methods. Studies were carried out in 2018–2021 in a field hospital of the Bryansk State Agrarian University. Carrot plants of the table variety Nantskaya 4 acted as the object of research. The estimated plot area is 10 m². To account for pests, observation methods were used using entomological net mowing, yellow glue traps, as well as the method of yellow cups (Mörike vessels). To protect crops from pests and assess the biological effectiveness of insecticides, the following preparations were introduced: Borey, SC (imidacloprid 150 g/L + clotianidine 50 g/L) — 0.14 l/ha; Karate Zeon, ISS (lambda-cigalothrin 50 g/l) — 0.2 l/ha; Zipi, CE (cypermethrin 250 g/L) — 0.5 l/ha; Vantex, ISS (gamma-cyhalothrin 60 g/L) — 0.1 L/ha. The seeding scheme is one-line 70 × 70 cm, the distance between plants is 3–5 cm.Results. The species composition of the dominant pest species of table carrots in the conditions of the Bryansk region has been determined. The biological efficacy of selected insecticides Borei, SC (imidacloprid 150 g/l + clothianidin 50 g/l), Karate Zeon, ISS (lambda-cygalothrin 50 g/l), Cipi, CE (cypermethrin 250 g/l) and Vantex, ISS (gamma-cygalothrin 60 g/l) was analyzed. On average, over the years of research, the high biological efficacy of the drug Borei, SC (imidacloprid 150 g/l + clothianidin 50 g/l) was noted to 92.5%. The results of the research allowed us to establish the biological effectiveness of the selected insecticides to increase the effectiveness of commercial vegetable growing.