Effect of some agricultural practices on faba bean infestation with certain insect pests

Abstract

The experiments reported herein were carried out at the Experimental Research Station at Moshtohor Zagazig University, Kalubia Governorate, Egypt, during the two successive seasons 1998/99 and 1999/2000. The •purpose of this study was to investigate the effects of planting dates, phosphorous fertilizer levels and some faba bean cultivatars and the magnitude of interactions between these factors, on infestation with some insects, i.e. Aphis craccivora, Koch., leaf miner (Liriomyza congesta, Becker, yield and its components in both seasons. Two experiments were conducted at different planting dates early (during october) and late (during December). In each experiment, a split -plot design with three replications was used. The main plots were randomly assigned three levels of phosphorous i.e. o.o, 30 and 60 kg P205/fed and five cultivars Giza 3, G 461 G. 674, G. 716 and Giza 843 were allocated in the sub plots. Data recorded : number of aphid (Aphis craccivora koch) leaf miner, the percentage of infestation • with Bruchus rujimanus in I 00 seeds, yield , its components, histological examination of leaves and chemical content.