Biological efficiency of some insecticides containing acetamiprid 200 G/L + lambda-cyhalometrin 150 G/L, in the control of plum pests, in the conditions of the Republic of Moldova

Abstract

The share of fruit crops in the national economy is due to the role that fruits have in food, in preventing and combating some diseases, as well as in increasing the national income. However, the orchards and fruit production are affected by numerous species of animal pests, which in some years multiply considerably, attack all the organs of the fruit trees and cause considerable damage. Plum plantations are attacked by various species of harmful, sucking, carpophagous or defoliating insects both during the vegetation period. The most dangerous pests, the density of which exceeded the economic damage threshold, were the plum saw wasp, the plum seed wasp, the gray plum louse and the plum worm. In combating plum pests, satisfactory results were obtained by using with the insecticide with the active substance acetamiprid, 200 g/l + lambda-cihalotrin, 150 g/l, with a consumption rate of 0,25 l/ha, which ensures a reduction of the species Hyalopterus pruni Geoffr. (96,32 - 88,11%), Cydia funebrana Tr., (94,50 – 92,56%), Hoplocampa spp. (92.07 - 92.93%) and Eurytoma schreineri Schr., (95,78%).