The role of cultivars in managing weeds in dry-seeded rice production systems

Mahajan, Gulshan and Chauhanm Bhagirath Singh (2013) The role of cultivars in managing weeds in dry-seeded rice production systems. Crop Protection, 49 52-57. doi:10.1016/j.cropro.2013.03.008


Author Mahajan, Gulshan
Chauhanm Bhagirath Singh
Title The role of cultivars in managing weeds in dry-seeded rice production systems
Journal name Crop Protection   Check publisher's open access policy
ISSN 0261-2194
1873-6904
Publication date 2013-06-01
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1016/j.cropro.2013.03.008
Volume 49
Start page 52
End page 57
Total pages 6
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Subject 1102 Cardiovascular Medicine and Haematology
Abstract Dry-seeded rice (DSR) is an emerging production system in Asia. However, weeds are a major biological constraint in the success of DSR production. Although newly available herbicides may provide satisfactory weed control in DSR, an excessive use of herbicides may increase the risk of herbicide resistance and shifts towards problematic weed species. Cultural management practices with the integrated use of cultivars could be exploited to reduce selection pressure and delay herbicide resistance in weeds. The lack of suitable weed-competitive cultivars, however, has been a major constraint in this direction and there is a need to exploit the role of rice cultivars for weed management in DSR. The traits that are likely to be most helpful for weed management in direct seeding include seed germination in anaerobic conditions and tolerance of early submergence for uniform crop establishment, high and early seedling vigour with rapid leaf area development during the early vegetative stage for weed suppression, cultivars having an allelopathic effect, and herbicide-resistant rice cultivars.
Keyword Anaerobic conditions
Herbicide-resistant rice
Seedling vigour
Weed-competitive cultivar
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

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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