WHAT IS THE THE ROLE OF GRASSLAND VEGETATION IN GRASSHOPPER POPULATION DYNAMICS

摘要

Grasshoppers are the most important insect pests of small-grain crops in Canada. The concept of utilizing resistant host-plants to manage grasshopper populations and reduce crop damage has received increased attention in recent years. The dual role of resistant plants is in antibiosis and antixenosis. Effective suppression of grasshopper populations would reduce the overall need for insecticides, an approach which is supportive of the concept of managing grasshopper outbreaks without risking environmental disaster.