Integrated management of rice water weevil - California style
2002
Godfrey, L.D. | Cuneo, T.D.
The rice water weevil is the most serious insect pest for rice production in California. Several other arthropod pests can sporadically reach damaging levels, bur rice water weevil infestations consistently have the potential to reduce rice yields, especially in the areas adjacent to field levees. Cultural control measures provide partial rice water weevil control and fit as part of an integrated management program. Insecticidal control, however is still a critical part of management schemes for this pest. Granular carbofuran has been used to manage this pest for more than 20 years. The registration and availability of this product to growers are threatened annually. New insecticides for rice water weevil control have been evaluated each year since 1992. Two materials with activity as postflood treatments and one preplant incorporated product have shown considerable promise for rice water weevil management. The two postflood materials, lambdacyhalothrin and diflubenzuron, received California registration in early 1999. These products control rice water weevil by affecting the adults and thereby reducing the number of larvae, the damaging stage. Because these products are short-lived in water, application timing is critical to achieve control. Several studies have been conducted to evaluate and refine treatment timing.
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This bibliographic record has been provided by International Rice Research Institute