KẾT QUẢ TUYỂN CHỌN GIỐNG DONG RIỀNG NĂNG SUẤT VÀ HÀM LƯỢNG TINH BỘT CAO TẠI HUYỆN ĐÀ BẮC, TỈNH HÒA BÌNH

From the perspective arrowroot varieties (including 31 varieties) of the Root crops research and development centrer were selected in the period 2006 - 2009, we conducted a comparative trial evaluated seven varieties best prospects, growth to flourish, for high quality in Da Bac district, Hoa Binh province. Through research results showed that compared with local varieties arrowroot red (control variety) most of prospect varieties well growth, development and withstand, pest and disease rates lower, the yield is higher than local variety from 1.5 to 2.0 times and early harvest period than local variety from 1.0 to 1.5 months. Especially with V-CIP and No. 49 have been grown in a test area farmers, both varieties well grow, well fall and pest resistance, the rate of starch Dry > 15% and yield of starch/ha high (8.26 to 7.28 tons/ha)