The vision of the ARC is to become a centre of excellence in agricultural research by developing skilled manpower and conducting quality research to generate technologies that would ensure sustainable crop production, and to play an active role in technology transfer process. The mission of the ARC is to plan, develop and implement research designed to produce technologies and systems that are required to ensure high and sustainable crop productivity, food security and export capacity.
The ARC is entrusted with applied agricultural research on [ Data provider:. Agricultural Research Corporation. The biology of Helicoverpa armigera Hubner Lepidoptera: Noctuidae , the food consumption by 3rd to 6th larval instars, and growth rate G. Also, the infestation by African bollwonn ABW , Helicoverpa armigera Hubner on three sunflower varieties mentioned above with three intra-row spacing i. The results showed that the insect passed through six larval instars on three sunflower varieties.
The average of the larval period recorded when the larvae were fed on Damazin-l, Hysun 33 and Pannar were No differences were recorded on the average period for pupation in the three varieties which were found to be 8. The adult longevity when feeding on Hysun 33 8.
The oviposition period was higher when larvae were reared on Damazin-1 6 days than those reared on the two hybrid varieties. The sex ratio i. The average weight of larvae increased in the 4th and 5th instars 6. The total weight of food consumed was greater when larvae were fed on Damazin-l In the first season the highest percent infested seeds by H.
The high seed yield was recorded on Pannar However, generally grain yield increased with decreasing intra-row spacing.
