ADAPTABILITY OF KOREAN CHINESE CABBAGE VARIETIES IN THE RED RIVER DELTA OF VIETNAM

The objectives of the study were to test adaptability and identify the best performance varieties of Korean Chinese cabbage in the Red River Delta, Vietnam. Adaptability of 12 Korean varieties was tested in winter - spring 2012 -2013 and winter - spring 2013 -2014 at the Field Crops Research Institute, (20o 54’ N, 106o 17’ E), in Hai Duong province... The crop was transplanted at the distance of 60 cm x 40 cm. Fertilizer application was 170 N - 100 P2 O5 - 150 K2 O and 10 ton of manure per ha. Most of the tested varieties were well adapted to the Red River Delta conditions. Asia yellow Mini and Jeongsang varieties with high yield (number) and high quality product were the most promising varieties, which can be grown in winter-spring season in the Red River Delta of Vietnam.