METHOD FOR PROTECTING VEGETABLE CROPS FROM APHID POPULATIONS

摘要

A method for protecting vegetable crops from aphid populations such that at the level of population of ground and root aphid species exceeding two and more threshold indices double foliar fertilizing of plants is carried out with an interval of 14-15 days with water solution of the fertilizer Riverm in an equivalent of 8 and 12 l of the fertilizer per 300 l of water per 1 ha. The first fertilizing of plants is carried out in 10-12 days after planting seedlings into outdoor bed. In the period of the beginning of forming aphid colonies on the plants single joint settling of the parasite Diaeritiella (Diaeritiella rapae M'Int) is carried out in an equivalent of 15-20 individuals per one plant and larvae of the third age of golden-eyed lacewing (Chrysopa cornea Steph.) in an equivalent of 35-40 individuals per one plant.