Open AccessEffect of biological preparations on the decrease of insect pests on brown mustard (Brassica juncea L.)
Author(s) -
Oksana Serdyuk,
Victoria Trubina,
Л.А. Горлова
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/979/1/012191
Subject(s) - plutella , brassica , biology , fertilizer , crop , insect , pest analysis , population , plutellidae , agronomy , botany , larva , diamondback moth , demography , sociology
The article presents a study of the effect of a biological insecticide preparation containing bacteria of Bacillus Cohn genus (concentration not less than 2x10 9 CFU/ml 3 ) at the application rate of 5.0 l/ha with the addition of liquid fertilizers of different compositions (high-molecular weight fertilizer based on organic polymers at the rate of 5.0 l/ha and mineral fertilizer with silicon dioxide at the rate of 1.0 l/ha) and used for plant treatment on the number of insect pests of mustard ( Brassica juncea L.): Athalia rosae L., Plutella xylostella L., Meligethes aeneus F. These pest species can destroy the generative organs of plants almost completely in a few days if they have a dense population in mustard sowings. We established that one treatment is sufficient for the effective decrease of Athalia rosae L., in the case of Plutella xylostella L., Meligethes aeneus F., there have to be two treatments of crop plants. The biological effectiveness of the biological preparation separately and in mixture with liquid fertilizer was high (at the same level as a chemical insecticide) and amounted to 92-100 %.