Economic impacts of high labour cost and herbicide resistance for the management of annual barnyardgrass (Echinochloa crus-galli) in rice production in the Philippines

Author

Jesusa C. Beltran, David Pannell (david.pannell@uwa.edu.au) and Graeme Doole

No 108770, Working Papers from University of Western Australia, School of Agricultural and Resource Economics

Abstract: Implications of increasing labour cost and development of herbicide resistance for profitable weed management in Philippine rice farming systems are investigated. The study employs RIMPhil (Resistance and Integrated Management in the Philippines), a bioeconomic simulation model developed to provide a comprehensive assessment of integrated weed management programmes for the control of annual barnyardgrass (Echinochloa crus-galli) in rice crops. Results indicate that herbicide application will become increasingly economically attractive, relative to manual weeding, as labour cost increases. This is important since urban migration in the Philippines continues to increase the scarcity of rural labour. Results also show that the onset of herbicide resistance results in substantial losses in farm profit. It may be worthwhile for farmers to take management actions to prevent or delay the onset of herbicide resistance, provided that these changes are effective and not too costly. The study highlights the complexity of decision making about integrated weed management on rice farms in the Philippines.

Keywords: Barnyardgrass; Bioeconomic model; Herbicide resistance; Integrated weed management; Rice production; Crop Production/Industries; Farm Management; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Date: 2011-07-10
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