in the current study some information is presented about the distribution and associations between alfalfa aphids and their parasitoids in different regions in 11 provinces of iran, as well as an identification key to the parasitoids. the main aphids were therioaphis trifolii maculata (buckton) and acyrthosiphon pisum (harris) followed by aphis craccivora koch and acyrthosiphon kondoi shinji. t...

The nectar provision hypothesis predicts that the introduction of nectar-producing plants in agroecosystems benefits parasitoid populations field and enhances biological control. Intercropping is a common crop diversification scheme may bring complementary sources for parasitoids increase herbivore pest For instance, intercropping cereals with faba beans introduces usually sugar-devoid systems ...