Dispersal of Alate Biotype C Greenbugs in Kansas12

Abstract

Alate greenbugs were trapped at Hays, Kans., from 1974 to 1979, inclusive. There were two distinct flight periods each year. The first flight peaked during the first week of June, and the second during the last week of July (1974 to 1977) or the third week of August (1978 and 1979). Flight patterns indicated that early planting of both wheat and sorghum should be avoided. More greenbugs were trapped from SE than NW during the spring but not during the summer. More greenbugs were collected from heights of 3 to 6 m than from 1.5 m, but that might be attributed to type of ground cover. As the green vegetation increased, the numbers of greenbugs collected decreased; however, strips of green wheat did not provide practical protection to adjacent bordering areas.