Weed ecology and weed management strategies for dry-seeded rice in Asia

Chauhan, Bhagirath S. (2012) Weed ecology and weed management strategies for dry-seeded rice in Asia. Weed Technology, 26 1: 1-13. doi:10.1614/WT-D-11-00105.1


Author Chauhan, Bhagirath S.
Title Weed ecology and weed management strategies for dry-seeded rice in Asia
Journal name Weed Technology   Check publisher's open access policy
ISSN 0890-037X
1550-2740
Publication date 2012-01
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1614/WT-D-11-00105.1
Open Access Status
Volume 26
Issue 1
Start page 1
End page 13
Total pages 13
Place of publication Lawrence, KS, United States
Publisher Weed Science Society of America
Language eng
Subject 1102 Cardiovascular Medicine and Haematology
1110 Nursing
Formatted abstract
Rice is a principal source of food for more than half of the world population, and more than 90% of rice worldwide is grown and consumed in Asia. A change in establishment method from manual transplanting of rice seedlings to dry-seeded rice (DSR) has occurred in some countries as growers respond to increased costs or decreased availability of labor or water. However, weeds are a major constraint to DSR production because of the absence of the size differential between the crop and the weeds and the suppressive effect of standing water on weed growth at crop establishment. Herbicides are used to control weeds in DSR, but because of concerns about the evolution of herbicide resistance and a scarcity of new and effective herbicides, there is a need to integrate other weed management strategies with herbicide use. In addition, because of the variability in the growth habit of weeds, any single method of weed control cannot provide effective and season-long control in DSR. Various weed management approaches need to be integrated to achieve effective, sustainable, and long-term weed control in DSR. These approaches may include tillage systems; the use of crop residue; the use of weed-competitive cultivars with high-yield potential; appropriate water depth and duration; appropriate agronomic practices, such as row spacing and seeding rates; manual or mechanical weeding; and appropriate herbicide timing, rotation, and combination. This article aims to provide a logical perspective of what can be done to improve weed management strategies in DSR.

Nomenclature: Rice, Oryza sativa L. 
Keyword Stale seedbed
Seeding rate
Row spacing
Flooding
Eesidue
Tillage system
Zero-till
Herbicide
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Published January-March 2012.

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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Citation counts: TR Web of Science Citation Count  Cited 80 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 95 times in Scopus Article | Citations
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