EFFECT OF SOME DIFFERENT METHODS AND NATURAL ENEMIES ON THE CONTROL OF THE APHID OF SOME HERBOGY GRASS FIELD CROPS IN NEPAL

Abstract

The study dealt with methods of controlling aphids on some grassy field crops in Nepal. The aphids are considered a dangerous sucking piercing insect because they feed on plant sap and attack all parts of the plant and cause damage to it also transmit different viruses. The insects' spreads in bothEgypt and Nepal, where the climatic conditions are similar in both countries, which prompted farmers to use multiple methods to control this insect because of the special importance of the grass field crops and where a large percentage of the population depends on them.There are many ways to control aphids, biologically, chemically, and others. One of the most important methods of combating this insect is integrated pest management (IPM). This controlling strategy depends on the rational useof both physical and mechanical control, chemical and biological control, and organizational and legislative control in a way that achieves the goal of its use and maintains the ecological balance.To accomplish this, it is necessary to persuade farmers to use alternative methods to combat natural enemies, particularly aphids, in addition to planting new pest- and disease-resistant plant varieties, exploiting the available natural resources and exploiting environmental factors to eliminate pests, as well as raising their awareness of the effective time and appropriate time to spray pesticides in the proper way, as well as the precautions to be taken into account when spraying and information related to chemical control, as well as their skill in using other control methods and evaluating these uses in control, especially aphids.