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Weedy Rice (Oryza sativa L.) Problem in Rice (Oryza sativa L.) Based Cropping Systems in the Philippines

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DOI: 10.4236/ajps.2013.412292    4,040 Downloads   5,963 Views   Citations

ABSTRACT

A study was undertaken in February 2012 to understand the knowledge and practices of rice farmers about weedy rice in two municipalities of Iloilo, Philippines. The specific objectives of the study were to establish what rice farmers know about weedy rice, examine rice farmers’ practices in managing weedy rice, and recommend policies on weedy rice management based on the results of the study. Farmers’ knowledge of weedy rice did not differ much between two villages. Results showed that 41% from the second most affected village and 33% from the most affected village thought that weedy rice cannot reduce the market value of the harvested rice. Majority of the farmers (68%) responded that awns can be absent in some weedy rice and about 40% of the farmers did not know that seeds of weedy rice have dormancy. Cutting the weedy rice panicles at harvest, as the best way of reducing weedy rice, was practiced by majority of the respondents (82%) from the most affected village. Our study suggests that there is a need to increase awareness about weedy rice among Asian farmers.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

I. Tanzo, E. Martin and B. Chauhan, "Weedy Rice (Oryza sativa L.) Problem in Rice (Oryza sativa L.) Based Cropping Systems in the Philippines," American Journal of Plant Sciences, Vol. 4 No. 12, 2013, pp. 2359-2366. doi: 10.4236/ajps.2013.412292.

References

[1] BAS (Bureau of Agricultural Statistics), “Country STAT Philippines,” 2012. www.countrystat.bas.gov.ph
[2] B. S. Chauhan, “Strategies to Manage Weedy Rice in Asia,” Crop Protection, Vol. 48, 2013, pp. 51-56.
http://dx.doi.org/10.1016/j.cropro.2013.02.015
[3] M. Azmi and S. M. R. Karim, “Weedy Rice—Biology, Ecology and Management,” Malaysian Agricultural Research and Development Institute (MARDI), Kuala Lumpur, 2008, 56 Pages.
[4] A. M. Baltazar and J. D. Janiya, “Weedy Rice in the Philippines,” In: BB Baki, DV Chin and M Mortimer, Eds., Wild and Weedy Rice in Rice Ecosystems in Asia—A Review, Los Baños, Philippines, 2000, pp. 75-78.
[5] B. S. Chauhan, A. S. K. Abeysekara, M. S. Wickramarathe, S. D. Kalatunga and U. B. Wickrame, “Effect of Rice Establishment Methods on Weedy Rice (Oryza sativa L.) Infestation and Grain Yield of Cultivated Rice (Oryza sativa L.) in Sri Lanka,” Crop Protection, Vol. 55, 2014, pp. 42-49.
[6] J. C. Delouche, N. R. Burgos, D. R. Gealy, G. Z. de San Martin, R. Labrada, M. Larinde and C. Rosell, “Weedy Rices—Origin, Biology, Ecology and Control,” FAO Plant Production and Protection Paper 188, FAO, Rome, 2007, 144 Pages.
[7] B. S. Chauhan and D. E. Johnson, “Weedy Rice (Oryza sativa L.) I. Grain Characteristics and Growth Response to Competition of Weedy Rice Variants from Five Asian Countries,” Weed Science, Vol. 58, No. 4, 2010, pp. 374-380. http://dx.doi.org/10.1614/WS-D-09-00071.1
[8] H. S. Suh, “Weedy Rice,” National Institute of Crop Science, Rural Development Administration (RDA), Suwon, 2008, 240 Pages.
[9] N. R. Burgos, R. J. Norman, D. R. Gealy and H. Black, “Competitive N Uptake between Rice and Weedy Rice,” Field Crops Research, Vol. 99, No. 2-3, 2006, pp. 96-105.
http://dx.doi.org/10.1016/j.fcr.2006.03.009
[10] B. S. Chauhan and D. E. Johnson, “Competitive Interactions between Weedy Rice and Cultivated Rice as a Function of Added Nitrogen and the Level of Competition,” Weed Biology and Management, Vol. 11, No. 4, 2011, pp. 202-209.
http://dx.doi.org/10.1111/j.1445-6664.2011.00421.x
[11] B. S. Chauhan, “Weed Ecology and Weed Management Strategies for Dry-Seeded Rice in Asia,” Weed Technology, Vol. 26, No. 1, 212, pp. 1-13.
http://dx.doi.org/10.1614/WT-D-11-00105.1
[12] B. S. Chauhan, “Weedy rice, “(Oryza sativa) II. Response of Weedy Rice to Seed Burial and Flooding Depth,” Weed Science, Vol. 60, No. 3, 2012, pp. 385-388.
http://dx.doi.org/10.1614/WS-D-11-00213.1
[13] D. V. Chin, “Biology and Management of Barnyardgrass, Red Sprangletop and Weedy Rice,” Weed Biology and Management, Vol. 1, No. 1, 2001, pp. 37-41.
http://dx.doi.org/10.1046/j.1445-6664.2001.00009.x
[14] M. Mortimer, S. Pandey and C. Piggin, “Weedy Rice: Approaches to Ecological Appraisal and Implications for Research Priorities,” In: B. B. Baki, D. V. Chin and M. Mortimer, Eds., Wild and Weedy Rice in Rice Ecosystems in Asia-A Review. Limited Proceedings No. 2, International Rice Research Institute, Los Baños, 2000, pp. 97-105.
[15] A. Diarra, R. J. Smith Jr. and R. E. Talbert, “Interference of Red Rice (Oryza sativa) with Rice (O. sativa),” Weed Science, Vol. 33, No. 5, 1985, pp. 644-649.
[16] R. J. Smith Jr., “Control of Red Rice (Oryza sativa) in Water-Seeded Rice (O. sativa),” Weed Science, Vol. 29, No. 6, 1981, pp. 663-666.

  
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