KẾT QUẢ NGHIÊN CỨU TUYỂN CHỌN VÀ KHẢO NGHIỆM GIỐNG NHÃN TẠI HUYỆN SÔNG MÃ, TỈNH SƠN LA
KẾT QUẢ NGHIÊN CỨU TUYỂN CHỌN VÀ KHẢO NGHIỆM GIỐNG NHÃN TẠI HUYỆN SÔNG MÃ, TỈNH SƠN LA
Selection of longan varieties for Song Ma district, Sonla province
Song Ma - a mountainous District of Son La Province, is a specialization area (about 5000 ha) for Longan production. In bumper crops farmers can get 18 - 20 thousand tons productivity a year. However, product quality and appereance has been remained at low standard due to the fact that seedlings are propagated from non - selection or unclear original seed. Aiming to improve Longan quality and production benifit for Song Ma, the Fruit and Vegetable Research Institute (FAVRI) under ADB funding, conducted the research toward improved grafting with newly introduced and local high quality varieties on mother trees. After research implementation, it has been sucessfully selecting 2 high quality and promissing local varieties (SL1 and SL2) which can be used toghter with 3 newly introduced varieties from FAVRI for improved grafting. After 1 year grafting on 10-12 year - old - mother stem, 3 such varieties as PHM99 - 1.1, PHM99 - 2.1 and HTM - 1, proved its strong growing and provided with high yielding and good quality product.