Performance of different herbicides in a dry-seeded rice system in Sri Lanka

Chauhan, Bhagirath S., Abeysekera, Anuruddika S.K., Kalatunga, Sakinda D. and Wickrama, Upali B. (2013) Performance of different herbicides in a dry-seeded rice system in Sri Lanka. Weed Technology, 27 459-462.

Author Chauhan, Bhagirath S.
Abeysekera, Anuruddika S.K.
Kalatunga, Sakinda D.
Wickrama, Upali B.
Title Performance of different herbicides in a dry-seeded rice system in Sri Lanka
Journal name Weed Technology   Check publisher's open access policy
ISSN 0890-037X
Publication date 2013-01-01
Year available 2013
Sub-type Article (original research)
Volume 27
Start page 459
End page 462
Total pages 4
Place of publication Lawrence, KS United States
Publisher Weed Science Society of America
Language eng
Formatted abstract
Dry-seeded rice systems are an emerging production technology in many Asian countries. A field study was conducted in 2011 and 2012 at the farm of the Rice Research and Development Institute, Batalagoda, Sri Lanka, to evaluate the performance of different herbicides in a dry-seeded rice system. Weed control treatments were nontreated (weedy), pretilachlor plus pyribenzoxim, cyhalofop-butyl, thiobencarb plus propanil, propanil, and bispyribac-sodium plus metamifop. All these POST herbicides were applied at 8 d after sowing, followed by an MCPA spray at 20 d after sowing. The dominant weeds in the study were barnyardgrass, Chinese sprangletop, and knotgrass. All herbicide treatments provided similar weed control, which ranged from 82 to 99%. Weeds in the nontreated plots reduced rice grain yield by 58 to 79% compared with the herbicide-treated plots. All herbicide-treated plots, except cyhalofop-butyl-treated ones, produced similar grain yield, which ranged from 3.7 to 4.2 t ha-1 in 2011 and from 6.0 to 7.0 t ha-1 in 2012. The results of our study suggest that different herbicides provided similar weed control and therefore different herbicides can be rotated in different seasons to reduce selection pressure on weeds.
Keyword Asia
Herbicide efficacy
Weed biomass
Weed density
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 12 Nov 2014, 05:45:45 EST by Bhagirath Chauhan on behalf of Centre for Crop Science