Weed Control by Suppression Ability of Barley as Cover Crop in Dry Direct Seeded Rice Fields
2010
Hwang, J.B., National Institute of Crop Science, RDA, Miryang, Republic of Korea | Park, S.T., National Institute of Crop Science, RDA, Miryang, Republic of Korea | Song, S.B., National Institute of Crop Science, RDA, Miryang, Republic of Korea | Jung, K.Y., National Institute of Crop Science, RDA, Miryang, Republic of Korea | Lee, Y.H., National Institute of Crop Science, RDA, Suwon, Republic of Korea | Nam, M.H., National Institute of Crop Science, RDA, Miryang, Republic of Korea
This environment-friendly study was conducted to investigate the effects of winter barley as cover crop on the suppression of weeds and on the growth of dry direct seeded rice. The present study clarified the effects of winter barley as a cover crop on the weed vegetation, expressed as a multiplied ratio. In cultivation quality of rice, seedling stand was ranged from 104~112 m-². And, seeding stand of barley was the highest seedling stand 634 unit per ㎡ in April 10 as compared to the other seeding dates. Furthermore, the dry weight of barley seeded in April 10 was heaviest at 146g m-². Rice yield was in 401kg 10a-¹ in the April 10, and 517kg 10a-¹ in the April 30, because of increased weeds caused by a low weed control. Effects of barley cover crop at same seeding with rice was ranged from 77~87% of control. The economic effect of barley as cover crop was analyzed to be increased by low herbicide using, despite of the slight decrease in rice yield during the period.
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