Abstract
Hau Giang is one of the rice centers of the Southwest region, but it is also a place affected by climate change, drought will activate acid sulfate soils to become stronger and more aggravated. The research topic "Selection of rice varieties suitable to acid sulfate soil area in Hoa An, Phung Hiep, Hau Giang" has been implemented with the aim to find out suitable rice varieties adapted to acid sulfate soil condition, short growth duration, resistance to brown plant hopper and rice blast disease, high yield and good quality on acid sulfate soil area. The experiment was arranged in randomized complete block design, with 03 replications, 12 treatments corresponding to 12 promising rice varieties from O Mon Rice Research Institute, The University of Can Tho and Long Phu Seed Station. Based on the results of the analysis of criteria for agronomic characteristics, acidity adaptation, pest resistance, grain quality, yield components and actual yield. the research group has selected the best two rice varieties M480 and D158, having short growth duration from 101-104 days ( the transplanted rice plants), well- adapted to acid sulfate soils (level 1), resistance to brown plant hopper and rice blast disease (level 1), high yield (dried paddy from 6,7 to 8,0 ton/ha), long grain rice, less chalkiness, mushy and soft rice were chosen for rice production.
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