New Experiments in combating the Maize Pyralid
Forfschr. Landw, Vienna 3(11): 493-499
The cobs on maize plants infested by Pyrausta (Botys) nubilalis, Hb., yield less weight of grain even though they themselves have not been attacked. In severe cases 40-50 per cent. of the crop may be lost. Infestation in the stem produces a forced ripening of the cob, and in observations in Czechoslovakia 95 per cent. of the cobs that ripened 10-14 days before the normal date were found to be from infested plants.