Influence of certain agricultural practices on the cowpea aphid, Aphis craccivora Koch, infesting broad bean crops and the relation between the infestation and yield of plants in upper Egypt
The effect of certain agriculture practices such as susceptibility of six broad bean varieties, space of planting, nitrogen fertilization levels, first irrigation and farmyard manure on the infestation of broad bean crop with the Aphis craccivora Koch was studied at El-Kawsar region, Sohag Governorate (about 495 km south of Cairo, Egypt) throughout the 2003/2004 and 2004/2005 seasons. The results obtained ... إقراء المزيد