Efficiency of tank mixes usage to protect sweet corn from pests

Abstract

The article presents the results of a study to identify the effectiveness of the use of Aktofit, Lepidocid, Aktara, Aktellik, Admiral and their tank mixtures against cotton budworm in the foothill zone of the Kabardino-Balkarian Republic. Sweet corn is a vegetable crop that is the most demanding on growing conditions and requires attention to itself. It is especially important to obtain high-quality sweet corn cobs. The yield and quality indicators of sweet corn cobs are significantly affected by such pests: meadow moth, stalk moth, cotton budworm, aphids, swedish fly, chickweed. The most dangerous among them is the cotton budworm, it is difficult to deal with it. The period of formation of butterflies is more than a month, during which time several generations appear. The cotton bollworm causes irreparable damage if no measures are taken to protect the cobs. The usage of different treatment schemes affected not only the number of the pest, but also the damage to the cobs, taking into account the lateral damage to the cobs. When selling cobs with upper damage, it is possible to cut off the damaged part and present it as a marketable one, and in case of lateral damage, the entire cob is rejected. Having carried out chemical and biological treatments, the number of lateral damaged cobs was noticeably reduced. This is due to the fact that the number of individuals decreased sharply and did not have time to breed on the sides of the cobs. It was found that without the use of treatments, the length of damage to the cobs reached 3.5 cm. In the variants with the Aktara + Admiral tank mixture, the length of damage to the cobs was 1.3 cm, and ac Aktara + Aktellik - 1.5 cm. Thus, the best treatment scheme was determined: 1. Aktara + Actellik (0.1+0.5 l/ha); 2. Aktara + Admiral, (0.1+0.5 l/ha), which had the lowest indicators: the number of damaged ears, the length of the damage and the number of ears with lateral damage, as well as the percentage of marketable yield was higher.