000259954 001__ 259954
000259954 005__ 20180123011038.0
000259954 037__ $$a1936-2017-2227
000259954 041__ $$aeng
000259954 260__ $$c1989
000259954 269__ $$a1989-07-01
000259954 300__ $$a10
000259954 336__ $$aConference Paper/ Presentation
000259954 520__ $$aWithout labeled insecticides, such as toxaphene, Puerto Rico pineapple growers are unable to control the larvae of Batrachedra comosae Hodges, a moth causing the dreaded gummosis. Pineapple production of 68,753 metric tons valued at $19.5 million in 1987-88 may be in jeopardy. For several years up to and following the US EPA cancellation of toxaphene labels, field and residue trials were conducted to evaluate the effects of other insecticides for gummosis control. Insecticides with active ingredients acephate, fenvalerate and esfenvalerate were effective when applied during bloom 60-80 days before harvest. In several trials insecticide residue levels in the pineapple crown, stump, foliage, whole fruit, pulp and bran were barely detectable and ranged from 0.01 to 0.08 ppm. On basis of current data, EPA has granted a Section 18 emergency exemption registration for one year for the use of esfenvalerate on pineapples grown in Puerto Rico. A tolerance and full label will be granted after additional residue data is provided from samples of pineapple juice and bran. ----- A Porto Rico les planteurs d'ananas, s'ils ne peuvent utiliser d'insecticides du typetoxaphène, sont dans l'incapacité de contrôler la teigne Batrachedra comosae Hodges responsable de la gommose. Dans ces conditions la production d'ananas qui était en 1987-88 de 68753 T et représentait une valeur de 19,5 millions de $ pourrait se trouver en péril. Depuis quelques années, à la suite de l'annulation par l'E.P.A. de la dérogation d'utilisation du toxaphène, des essais ont été effectués pour évaluer le taux des résidus et l'efficacité au champ d'autres insecticides. Certains de ceux-ci, à base notamment d'acephate, fenvalerate et esfenvalerate, se sont montrés efficaces appliqués à la floraison 60 à 80 jours avant la récolte. Dans divers essais insecticides les analyses de résidus effectuées alors dans différentes parties de la plante (couronne, souche, feuille, fruit, pulpe...) ont montré que ceux-ci étaient difficilement détectables puisque compris entre 0,01 et 0,008 ppm. A la suite de ces résultats l'E.P.A. a accordé (Section 18) aux planteurs d'ananas de Porto Rico une dérogation d'une année pour l'utilisation de l'esfenvalerate. L'homologation définitive pourrait être accordée à la suite d'analyses de résidus complémentaires qui seraient à effectuer notamment à partir d'échantillons de jus et d'écorce d'ananas.
000259954 542__ $$fBy depositing this Content ('Content') in AgEcon Search, I agree that  I am solely responsible for any consequences of uploading this Content to AgEcon Search and making it publicly available, and I represent and warrant that: I am either the sole creator and the owner of the copyrights and all other rights in the Content; or, without obtaining another’s permission, I have the right to deposit the Content in an archive such as AgEcon Search. To the extent that any portions of the Content are not my own creation, they are used with the copyright holder’s express permission or as permitted by law. Additionally, the Content does not infringe the copyrights or other intellectual property rights of another, nor does the Content violate any laws or another’s rights of privacy or publicity. The Content contains no restricted, private, confidential, or otherwise protected data or information that should not be publicly shared. I understand that AgEcon Search will do its best to provide perpetual access to my Content. In order to support these efforts, I grant the Regents of the University of Minnesota ('University'), through AgEcon Search, the following non-exclusive, irrevocable, royalty-free, world-wide rights and licenses: to access, reproduce, distribute and publicly display the Content, in whole or in part, in order to secure, preserve and make it publicly available, and to make derivative works based upon the Content in order to migrate the Content to other media or formats, or to preserve its public access. These terms do not transfer ownership of the copyright(s) in the Content. These terms only grant to the University the limited license outlined above.
000259954 546__ $$aEnglish
000259954 650__ $$aCrop Production/Industries
000259954 650__ $$aResearch and Development/Tech Change/Emerging Technologies
000259954 6531_ $$aPesticide residues
000259954 6531_ $$ainsecticide residues
000259954 6531_ $$apineapples
000259954 700__ $$aMontalvo-Zapata, R.
000259954 700__ $$aIngles, R.
000259954 700__ $$aMeister, C.W.
000259954 8560_ $$fsnyde350@umn.edu
000259954 8564_ $$s1005896$$uhttp://ageconsearch.umn.edu/record/259954/files/25_40.pdf
000259954 909CO $$ooai:ageconsearch.umn.edu:259954$$pGLOBAL_SET
000259954 980__ $$a1936