TOWARDS AN IPM PROGRAM FOR CABBAGE PESTS IN TRINIDAD

M. Yaseen

No 261474, 21st Annual Meeting, September 8-13, 1985, Port of Spain, Trinidad and Tobago from Caribbean Food Crops Society

Abstract: Cabbage is an important crop in Trinidad. It is serverly damaged by Puttette xvtostette, Hellula phidilealis and Trichoplusia ni. Two parasites Apanteles ptutettee and Tetrastichus sokotowskii were introduced for control of P. xylostella in 1970s. These are established, but are adversely affected by chemical pesticides applied against the other pests. T. ni has a fairly large complex of natural enemies which may well exert considerable control if chemical pesticides are not used. There is a dearth of natural enemies of H. phidilealis and farmers have to rely on chemical pesticides. It requires investigations to develop a pest management system with little disruption of the agroecosystem. It is suggested to establish trials with known parasites of other species of Hettute, diseases and manipulation of wild hosts of H. phidilealis in cultivations. ----- El repollo es un cultivo de importancis en la isla de Trinidad. Es severarnente daiiado por el Ptutetts kylostella, Hotluts phidilealis y Trichoplusia ni. Dos parasites Apentetr« plutellae y Tetrestichus sok otowskii, fueron introducidos con el objeto de controlar al P. xvtostette, en los aifos de 1970. Estos parasites fueron establecidos pero a la ver fueron afectados adversarnente por pesticidas qu(micos los cuales fucron utilizados para combatir otras plagas fuera de las rnencionadas, La plaga T. ni tiene un arnplio compl~o de enemigos naturales, los cuales pudiesen ejercer un control considerable si es que no se utilizarian pesticidas quimicos. Exsiste una escasez de enemigos naturales del H. pnidilestis, por 10cuallos agricultores no tienen mas alternativa que depender de pestieidas qufmicos. Se requiere lIevar a cabo investigaciones con el objeto de desarrollar un sistema de manejo de plagas, el cual disrupte en 10 mrnimo el agro-ecosistema, Se sugiere el establecimiento de ensayos, utilizando parfsitos conocidos, de otras especies del Hettute, enfermedades de la misrna y de manipulaciones de huespedes silvestres de H. phiditeetis.

Keywords: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 4
Date: 1985-09-08
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Persistent link: https://EconPapers.repec.org/RePEc:ags:cfcs85:261474

DOI: 10.22004/ag.econ.261474

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