Effect of rice establishment methods on weedy rice (Oryza sativa L.) infestation and grain yield of cultivated rice (O. sativa L.) in Sri Lanka

Chauhan, Bhagirath S., Abeysekera, Anuruddhika S.K., Wickramarathe, Manoja S., Kulatunga, Sakinda D. and Wickrama, Upali B. (2014) Effect of rice establishment methods on weedy rice (Oryza sativa L.) infestation and grain yield of cultivated rice (O. sativa L.) in Sri Lanka. Crop Protection, 55 42-49. doi:10.1016/j.cropro.2013.09.008


Author Chauhan, Bhagirath S.
Abeysekera, Anuruddhika S.K.
Wickramarathe, Manoja S.
Kulatunga, Sakinda D.
Wickrama, Upali B.
Title Effect of rice establishment methods on weedy rice (Oryza sativa L.) infestation and grain yield of cultivated rice (O. sativa L.) in Sri Lanka
Formatted title
 Effect of rice establishment methods on weedy rice (Oryza sativa L.) infestation and grain yield of cultivated rice (O. sativa L.) in Sri Lanka
Journal name Crop Protection   Check publisher's open access policy
ISSN 0261-2194
1873-6904
Publication date 2014-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.cropro.2013.09.008
Open Access Status
Volume 55
Start page 42
End page 49
Total pages 8
Place of publication Amsterdam Netherlands
Publisher Elsevier BV
Collection year 2015
Language eng
Formatted abstract
Weedy rice is a great threat to rice production in Sri Lanka. Selective herbicides to manage weedy rice in conventional rice cultivars are not available in Sri Lanka. In the absence of appropriate chemical control measures, cultural approaches may help to achieve effective control of weedy rice. A study was conducted in two consecutive seasons in farmers' fields at three sites (Atalla, Samanthurai, and Girithale villages) in Sri Lanka to evaluate the effect of different establishment methods (farmers' practice, random broadcast, row seeding, seedling broadcast, and transplanted rice) on weedy rice infestation and rice yield. The farmers' practice had a higher number of weedy rice panicles (60-80m-2) than the random broadcast (39-48paniclesm-2), seedling broadcast (3-15paniclesm-2), and transplanted rice (1.3-3.0paniclesm-2) methods. The use of clean rice seeds in the random broadcast method reduced weedy rice seed production by 29-41% compared with the farmers' practice (0.6-2.0tha-1). Compared with the farmers' practice, the seedling broadcast method reduced weedy rice seed production by 71-87% and transplanted rice by 95-98%; and increased rice yield by 27-49% (7.5-9.1tha-1). At all three sites, the farmers' practice resulted in the lowest grain yield (5.1-6.7tha-1). Compared with the farmers' practice, the random broadcast and row seeding methods increased rice yield by up to 21% and 31%, respectively. The findings suggest that the use of clean rice seeds, the use of a row-seeded crop, and the adoption of different rice planting methods may help to suppress the spread of weedy rice.
Keyword Clean seed
Farmers' practice
Row seeding
Seedling broadcast
Transplanted rice
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Queensland Alliance for Agriculture and Food Innovation
 
Versions
Version Filter Type
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
Google Scholar Search Google Scholar
Created: Thu, 10 Jul 2014, 11:55:54 EST by System User on behalf of Centre for Plant Science