Effects on the populations of Bemisia tabaci (Homoptera: Aleyrodidae) and Liriomyza huidobrensis (Diptera: Agromyzidae) by the botanic insecticides Neem and Rotenone on tomato crop in Peru

Abstract

We conducted a population variation of whitefly Bemisia tabaci and leaf minerfly Liriomyza huidobrensis and the parasitoid microwaps of L. huidobrensis, Halticoptera arduine (Pteromalidae) and Diglyphus spp. (Eulophidae) by the effect of the botanical extract neem and rotenone with the phenological state of tomato crop variety Heinz 3302, between May (sowing) until beginning of October (harvest) from 1997, in Tujahuana farm in lea, Perú. The design was Complete Randomized Blocks Design with three replicates from each of five treatments. A total of nine evaluations were taken every two-week period: four (vegetative growing), three (flowering), and two (fructification). We observed nymphal states of whitefly increased in flowering and adults in the vegetative phase. The leafminer fly showed a high population at the ínitiation of the vegetative state. Adult parasitoids did not change during the phenological state of the crop.