Global distribution of rice weeds - a review

Kraehmer, Hansjoerg, Jabran, Khawar, Mennan, Husrev and Chauhan, Bhagirath Singh (2016) Global distribution of rice weeds - a review. Crop Protection, 80 73-86. doi:10.1016/j.cropro.2015.10.027

Author Kraehmer, Hansjoerg
Jabran, Khawar
Mennan, Husrev
Chauhan, Bhagirath Singh
Title Global distribution of rice weeds - a review
Journal name Crop Protection   Check publisher's open access policy
ISSN 0261-2194
Publication date 2016-02-01
Year available 2015
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1016/j.cropro.2015.10.027
Open Access Status Not Open Access
Volume 80
Start page 73
End page 86
Total pages 14
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Subject 1102 Agronomy and Crop Science
Abstract This review provides an overview on the most common rice weed species of the world. It shows that a few generalists have established in rice independent from sites, crop management systems, and local climatic conditions. Cosmopolitan weeds are even constant elements where rice cultivation started just a century ago. Local differences may be explained by cultivation methods, growing seasons, or special weed management. Some general changes in weed spectra have been observed globally in recent years. Weedy rice ( Oryza sativa L.) and herbicide resistance have become general global problems within the last decades. Some global key weed genera such as Echinochloa, Cyperus, Scirpus, or Fimbristylis species are, however, still dominating rice fields despite the decade long use of well performing herbicides. On the other side, general species shifts as a result of resistance have not been observed yet. Leptochloa species started to become major problems in Asia in the end of the last century and now in Europe also. Several modern herbicides allow the control of perennial weeds, such as Cyperus rotundus L. or Eleocharis kuroguwai Ohwi which makes them no longer serious threats. Some genera in rice such as Echinochloa and Oryza (weedy rice) are characterized by an enormous germplasm variability which makes species definitions difficult. The fact that weeds in rice have to adapt to wet or aquatic conditions reduces the biodiversity range in comparison to other arable crops. Water management has a considerable impact on weed spectra. The increase of rice acreages with reduced irrigation may end up in higher weed infestations. Long term results of weed surveys in rice as they exist for other crops are, however, not available. This makes predictions on biodiversity changes in this crop quite difficult.
Keyword Biodiversity
Evolution of weed populations
Global rice weed spectra
Weed distribution
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2016 Collection
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Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 6 times in Scopus Article | Citations
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