Utilização da fosfina (PHs) no controle de pragas do milho e feijão armazenados em alguns municípios da região polarizada por Campina Grande-PB e seus efeitos na germinação, vigor e umidade.

Abstract

The present work aimed to evaluate the phosphine purge in seeds of corn and beans stored in the region polarized by Campina Grande-PB, besides checking the possible effects of fumigant on germination, vigor and moisture content of these seeds. In fairs and markets in the region, questionnaires to 100 producers and / or traders. evidenced that the use of phosphine is widespread and that even without technical guidance, the product is used in a manner satisfactory, although the handling is not optimal and the dosages employed are higher than recommended. In laboratory, corn and bean seeds were subjected to phosphine purge at dosages of 15, 30 and 45 tablets GASTOXIN / m3 and exposure periods of 0, 24, 48, 72, 96 and 120 hours, with no significant changes in the characteristics studied.