[Occurrence of aphids and results of tests of efficacy of some insecticides against aphids on potatoes in 1996]

aphis fabae aphis nasturtii application rates aulacorthum solani brevicoryne brassicae cihalotrina cipermetrin cyhalothrin cyhalothrine cypermethrin deltamethrin deltametrin dimethoate dimetoato dose d'application insecticidas insecticide insecticides macrosiphum euphorbiae myzus persicae pirimicarb pirimicarbe solanum tuberosum