Helitec To Combat Phytonomus In Uzbekistan

Abstract

One of the dangerous pests of alfalfa of the second and subsequent years of standing is the leafy alfalfa elephant phytonomus (Phytonomus variabilis Ilbsu). The article presents the results of studying the properties of liquid mineral fertilizers mixed with bioinsecticides, their application on alfalfa against phytonomus larvae. The results obtained in the course of these studies could be the basis for an effective environmentally friendly fight against phytonomus. As a result of feeding and assimilation of fertilizers through the leaves of plants, the increase in the yield of alfalfa was 16.4 to the control. These measures make it possible, without polluting the environment, to reduce the number of phytonomus on alfalfa crops and to increase the yield of this valuable forage crop. From the results obtained, it can be seen that the yield of alfalfa in the control was 54.5 c / ha, and from the experimental options - 70.9 c / ha. The saved yield as a result of the use of preparations and mixtures was 16.4 c / ha.