Experience of application of bioinsectoacaricide MatrinBio in film greenhouse on gourds

Abstract

Relevance. The study is aimed at evaluating the biological effectiveness of insecticides to reduce the number of tobacco thrips and gourd aphids in a film greenhouse on gourds. These pests cause significant damage to plants and can carry a viral infection. In greenhouse conditions, tobacco thrips can produce up to 7-8 generations, and melon aphid – up to 16 generations per season. The recommended pest control products have a limited protective duration in protected ground conditions, and in most cases promote the development of resistance in insects.Results. The article presents the results on the use of the insectoacaricide MatrinBio, BP against melon aphids and tobacco thrips, and the biological effectiveness in reducing the number of pests is determined. A single treatment with a bioinsecticide kills up to 90% of tobacco thrips insects. Efficiency against melon aphids is 27% lower. It is noted that the period of the protective action of MatrinBio, BP lasts up to seven days, then decreases. On the fourteenth day, the biological effectiveness against pests is; for thrips – 72%, and for aphids – 40%. For comparison, bioinsecticide Fitoverm, EC, was chosen as a standard, which showed worse results in reducing the number of tobacco thrips (less by 20...25%), but had the best protective effect against melon aphids - by 19...21%. Re-treatment with drugs seven days after the first one significantly reduced the number of pests. To prevent the emergence of resistance in pests in protected ground conditions, it is recommended to include MatrinBio, BP in the integrated protection system and alternate with insectoacaricides from other classes or use in various combinations.