Schizaphis graminum 1 : Effect on Grain Sorghum Exposed to Severe Drought Stress 23
- 1 April 1981
- journal article
- research article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 10 (2) , 247-248
- https://doi.org/10.1093/ee/10.2.247
Abstract
During extreme drought in eastern Nebraska in 1974 in which only 1.57 cm of rain fell from June 11 to Aug. 9, differences of 1274 and 991 biotype C greenbugs/plant caused significant yield reductions of 365 and 757 kg/ha respectively on grain sorghum in 2 field tests. These yield losses were 3 and 6 times greater than the then current loss associated with the economic injury level (121 kg/ha). Greenbug densities on the 3 dates of insecticide application and at peak density were significantly (P = 0.05) and inversely related to the numbers of heads in both tests.This publication has 0 references indexed in Scilit: