Susceptibility of some mungbean cultivars to aphid infestation with special reference to pod setting and seed yield.
The relative susceptibility of 23 mung bean (Vigna radiata) accessions to cowpea aphid (Aphis craccivora) infestation, and its effect on yield characteristics, was evaluated in field experiments during 1993-94 at Assiut University, Egypt. VC 2755 A was the least susceptible mung bean accession, whereas accession VC 1482 E was the most susceptible to aphid infestation. The aphid population increased gradually from the 3rd week of May in 1993 and the 2nd week of June in 1994, to a peak density in mid July, then declined by the beginning of September. The VC 2711 A recorded the highest seed yield, followed by VC 2750 A, while aphid counts on these 2 accessions were among the lowest.