SPRING SOYBEAN PRODUCTION ON ONE SEASONAL TERRACED FIELDS: A NEW MEASURE FOR UPLAND AGRICULTURE IN YENBAI PROVINCE

There are hundreds of thousand hectares of terraced fields in the northern mountainous regions in Vietnam, in which one third of them has been used to plant rice in two crop seasons and only autumn rice has been planted on the left area. Land for agricultural production from terrace areas has been fallow while local people lack of food. Hence, the northern mountainous region has potential to develop new crop on one season terraces to improve the living of local people. Yen Bai is one of provinces have the largest area of terrace and most of them were fallow in the spring. 

Soybean is considered as a good crop to help farmers improve their life and exploit land potential effectively in the terraced areas. There were 3 promissing soybean varieties adapted natural characteristics on terrace fields in Yen Bai province, included ĐVN10, ĐVN6, ĐT26.