Author
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.
Suggested Citation
Download full text from publisher
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ags:cfcs85:261474. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: AgEcon Search (email available below). General contact details of provider: http://cfcs.eea.uprm.edu/ .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.