NF97-327 A Guide to Grasshopper Control in Yards and Gardens
暂无分享,去创建一个
Grasshopper populations fluctuate in cycles. High or very high populations may be present for two to four years followed by low to moderate populations for several years. Even when overall populations are relatively low, grasshoppers in and around the garden can be a nuisance. In outbreak years, however, grasshoppers can destroy unprotected gardens and threaten small trees and shrubs. Grasshopper damage occurs most frequently in areas with less than 25 inches annual rainfall. In most years, the western half of Nebraska falls into this high risk category; however, grasshoppers can be a problem throughout the state.