Comportamento de genótipos de cajueiro-anão sob infestação da traça-da-castanha Anacampis phytomiella (lepidoptera: gelechiidae) e do tripes Holopotripes fulvus (thysanoptera: phlaeothripidae)

Abstract

The Cashew cultivation in Brazil is Damage by several pest insects. Among these is an Anacampis phytomiella which consumes an almond of cashew nut, and in recent years a species of trips Holopotripes fulvus, which feeds on various plant leaves. The scarce studies on the control of the chestnut moth, and not the respect to H. fulvus, is not a knowledge in any type of control, for the management of the pest. The study with Anacammpsis phytomiella, had the objective of evaluating six genotypes, regarding yields, average weight of chestnut, in the agricultural years of 2014, 2015 and 2016. The yields was higher in progenies IC 13/1 and IC 13/3 in 2015. For average BRS 226, CCP 76 and IC 13/4 obtained the best yields in the 2014 crop and in 2015 the genotypes IC 13/1, IC 13/3 and BRS 226. There was no difference in the moth attack of the chestnut. In this study with H. fulvus, was identified among 35 genotypes of dwarf cashew, the least preferred by the insect, in the years 2015 and 2016, in pacajus-CE. The population evaluations of H. fulvus were done by means of a monthly fee in the leaves of the plants and using a scale of grades varying from 0 to 4. The genotypes less preferred by H. fulvus in the year 2015 were: CAP 123 / 6, CAP 170, CAP 165, CAP 51, CAP 31, CAP 155/2, CAP 150/3, CAP 163/8. CAP 161/7, CAP 120, CAP 111/2, CAP 106/1, BRS 226, CAP 71, CAP 113, CAP 805/4, CAP 155, CAP 115/5, CAP 127/3, CAP 92, CAP 158 / 8, CAP 143/7, CAP 130/1, CAP 120/2, CAP 111/3, CAP 105/5, CAP 157/2 and CPC 76. In 2016 the least preferred genotypes were: CAP 92, CAP 31, CAP 71, CAP 143/7, CAP 157/2, CAP 155, CAP 111/2, CAP 120, CAP 165, CAP 106/1, CAP 127/3, BRS 226, CAP 163/8, CAP 113 and CAP 150/3. The companies evaluated in this experiment are responsible for cashew genotypes less feed by Holopotripes fulvus.