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- Title
Study on Damage Characteristics of Weedy Rice.
- Authors
Xunbin GUO; Hongsheng Jl; Changyun FENG; Weimin CHEN; Keli GU; Qin YUAN
- Abstract
In this study, several typical traits of weedy rice and its damage characteristics were analyzed. The results showed that the shattering of weedy rice was sometimes weaker than that of conventional rice. The newly-harvested weedy rice seeds have certain dormant period and a long active period, while the conventional rice seeds have no dormant period but have a limited active period. In the direct seeding and intercropping rice fields where weedy rice occurs seriously last year, if not controlled timely, weedy rice may caused a damage above 28%, sometimes even above 99%. After one season of cultivation, the underground weedy rice and conventional rice seeds will be carbonized, losing their activity. The germination of underground weedy rice can be first induced, and when the last-season wheat is harvested, the germinated weedy rice can be killed with 41% glyphosate (3 000 ml/hm2), thus the damage and expansion of weedy rice will be effectively controlled.
- Subjects
WEED populations; RICE; GERMINATION; SOWING; EFFECT of glyphosate on plants; PHYSIOLOGY
- Publication
Agricultural Science & Technology, 2015, Vol 16, Issue 4, p789
- ISSN
1009-4229
- Publication type
Article