Azadirachta indica and Jatropha curcas reduce the attack of Hypsipyla grandella Zéller in Swietenia macrophylla King planted in agroforestry systems

Guerra-Arévalo H.; Celis-Espinoza D.F.; Diaz-Visitación A.I.; Vásquez-Vela A.L.M.; Arévalo-López L.A.; García-Soria D.G.; Revilla-Chávez J.M.; Abanto-Rodriguez C.; Arévalo-Gardini E.; Del Castillo-Torres D.; Guerra-Arévalo W.F. · Scientia Forestalis/Forest Sciences (2022) · DOI: 10.18671/scifor.v50.10

Resumen

S. macrophylla is an important forest species with economic value, however its main problem is its ecological vulnerability to the attack of H. grandella. In this sense, the objective in this study was to determine the effect of A. indica and J. curcas in reducing the attack of H. grandella on S. macrophylla plants planted in agroforestry systems. For this, the basal diameter (mm), height of plant (cm), attacked plants (%), attacked stems (%), apices attacked (%), leaves attacked (%), survival and mortality of larvae were evaluated (%). The lowest percentage of attack of H. grandella in S. macrophylla plants was registered in the association S. macrophylla with T. cacao and A. indica and also in S. macrophylla with T. cacao and J. curcas, planted at 1 m x 3 m, with 0.95 and 2.85%, respectively. However, the greater survival and mortality of larvae of H. grandella was registered in the association S. macrophylla with T. cacao and in S. macrophylla with T. cacao and J. curcas with 90.20 and 88.89% respectively. Thus, the use of A. indica and J. curcas significantly promote the reduction of H. grandella attack on S. macrophylla plants planted in agroforestry systems.

Instituciones: Universidad Nacional Autónoma de Alto Amazonas; Universidad Nacional de San Martín