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The cost of wild oats (Avena spp.) in Australian wheat production

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Wilson, B.J. (1979) The cost of wild oats (Avena spp.) in Australian wheat production. In: 7th Asian-Pacific Weed Science Society Conference, Sydney, Australia.



The cost of uncontrolled Avena spp. (Avena fatua and A. sterilis), through yield losses and dockages for contaminated wheat, and the cost of control methods, is reviewed, using gross margins analysis. In competition and herbicide trials in Australia, grain yield losses due to Avena spp. range from nil to 75%. A yield of 2500 kg/ha gave a yield loss of 35% resulting in a gross margins loss of 50%.

The importance of using high cost herbicides correctly is shown; if diclofop-methyl and flampropmethyl are applied incorrectly or too late so that, instead of a maximum yield increase, there is no yield increase, the gross margin is reduced from $115 to $44/ha. Avena spp. control by rotating winter and summer crops in Queensland is achieved at no cost. The significant points demonstrated in this review are applicable in many crop/weed situations.

Item Type:Conference or Workshop Item (Paper)
Additional Information:B.J. Wilson. Agronomist, Queensland Wheat Research Institute, Department of Primary Industries, Toowoomba Qld. Australia 4350 Asian-Pacific Weed Science Society.
Keywords:Weeds; noxious plants; pathogen; pest; parasite management; weed management; plant production; agricultural economics.
Subjects:Plant pests and diseases > Individual or types of plants or trees > Wheat
Agriculture > Agriculture (General) > Agricultural economics
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Pesticides
Plant pests and diseases > Weeds, parasitic plants etc
Live Archive:08 Jun 2004
Last Modified:03 Sep 2021 16:47

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