tailieunhanh - Báo cáo khoa học nông nghiệp " MANGO EXPANDING YEAR-ROUND PRODUCTION TOWARD GAP IN CAO LANH DISTRIC, DONG THAP PROVINCE "

Nghiên cứu này được tiến hành để thiết lập mở rộng xoài sản xuất quanh năm đối với GAP ở huyện Cao Lãnh, tỉnh Đồng Tháp. Một cuộc khảo sát của kỹ thuật hoa đã được thực trong bằng cách trực tiếp phỏng vấn 110 người trồng có xoài phát triển diện tích lớn hơn mét vuông từ tháng Ba đến June/2007. Các cuộc biểu tình của hoa trong mùa sớm và cuối mùa của "mèo Hòa Lộc và xoài" Chu mèo "xoài đã được thành lập tại Xương của tôi làng với diện tích 0,5 ha cho mỗi trình diễn. Dư lượng nitrat. | GAP Workshop in Binh Thuan 21-22 7 2008 MANGO EXPANDING YEAR-ROUND PRODUCTION TOWARD GAP IN CAO LANH DISTRIC DONG THAP PROVINCE Tran Van Hau1 Tran Sy Hieu1 Le Thi Thanh Thuy1 ABSTRACT This study was conducted to establish mango expansion to year-round production toward GAP in Cao Lanh district Dong Thap province. A survey of flowering technique was carried out by directly interviewing 110 growers whose mango growing area was larger than 2 000 square meters from March to June 2007. Demonstrations of flowering in early-season and late-season of cat Hoa Loc mango and cat Chu mango were established at My Xuong village with an area of hectare per demonstration. Nitrate residue in fruit flesh was analyzed by Spectrophotometer at Ả 450 nm pesticide residue was estimated by High Pressure Liquid Chromatography HPLC at the Advanced laboratory at Can Tho university. The results showed that Anthracnose and Bacterial Black Spot are the two most serious diseases in the rainy season while thrips fruit borer and Idioscopus spp. are detrimental insects in the dry season. Growers applied pesticide and 14 1 2 9 times in case of with or without using bags to wrap young fruit respectively. 35 of growers used the Taiwanese bag for fruit wrapping at 45 days after fruit setting. Yield of late-season is higher than that of early-season by fold. Fruit wrapping at 40 days after fruit setting could help reduce damage of bacteria fruit gumming and 3 pesticide sprays in the fruit development stage. Allowed pesticide application and stopping using pesticides 30 days prior to harvesting helped achieve no detectable pesticide residue in fruit flesh. Fruit wrapping should be applied in rainy season. Keywords Nitrate residue year-round GAP cat Hoa Loc mango cat Chu mango 1 INTRODUCTION High yield low price is the proverb lasting long in mind of fruit growers. Due climate effects fruits flood the market in the in-season thus its price is very low in other words the higher the fruit