Abstract
This article presents the results of a study on the biological effectiveness of the fumigants «Kvıkfos» and «Germes» against larvae of pest insects of Bassia prostrata under the desert conditions of Southeastern Kazakhstan, intending to identify the most effective options for use in pasture plant protection systems. The research was conducted on experimental plots in the Bakanas district, taking into account biodiversity and the natural abundance of pests. To evaluate effectiveness, a control group (without treatment) and four experimental groups were used: «Kvıkfos» at doses of 1.0 and 2.0 g/m³, and «Germes» at doses of 5 and 10 ml/kg. Larval counts were carried out before treatment and on days 1, 3, 7, and 14 after fumigant application.
The results showed that «Kvıkfos» at a dose of 2.0 g/m³ provided the highest biological effectiveness: larval numbers decreased by 60.6% on day 1, by 85% on day 3, and stabilized at 90% by days 7–14. «Kvıkfos» at 1.0 g/m³ also demonstrated high effectiveness, gradually increasing from 40.6% to 70.3%. The fumigant «Germes» exhibited moderate insecticidal activity: at 10 ml/kg, effectiveness reached 65%, and at 5 ml/kg, 50%. Thus, «Kvıkfos» at 2.0 g/m³ is recommended for rapid and complete disinfestation of Bassia seeds, while «Germes», due to its ecological safety, is advisable for use in integrated protection systems aimed at preserving pasture biodiversity.
01 Introduction
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02 References
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