Granular insecticides for control of rice water weevil and the dark rice field mosquito.
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Paddy field
Rice water
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Journal Article Mosquito Control from Applications Made for Control of Rice Water Weevil Get access J. L. Lancaster, Jr., J. L. Lancaster, Jr. Division of Timber Management, Forest Service, USDA, Ogden, Utah Search for other works by this author on: Oxford Academic PubMed Google Scholar N. P. Tugwell N. P. Tugwell Division of Timber Management, Forest Service, USDA, Ogden, Utah Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 62, Issue 6, 1 December 1969, Pages 1511–1512, https://doi.org/10.1093/jee/62.6.1511a Published: 01 December 1969 Article history Received: 20 February 1969 Published: 01 December 1969
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Abstract A RCBD with 5 replications was used to compare RWW larval control among 4 insecticide treatments and an untreated control. Rice plants were grown in a greenhouse in 1 liter plastic pots (10 cm diam) filled to 50% capacity with Stockton clay loam. Soil had been sifted through a 3.2-mm mesh screen and steam sterilized. Ammonium sulfate (0.5 g/pot) was added and lightly incorporated into the soil surface with forceps. Pots were flooded to a depth of 5 cm
Rice water
Ammonium sulfate
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Abstract The experimental design was a RCB with 6 treatments and 4 replications. Plot size was 9 rows (7-inch spacing) by 20 ft. Each plot was bound by levees. Foundation seed rice was treated with fipronil 75 FS by Celpril Industries (Manteca, CA). Treated and untreated rice was drill seeded by Crowley silt loam at 90 lb/acre on 13 May and emerged between 24 and 28 May. Cool, rainy weather extended the emergence period and contributed to 5 to 15% stand reduction in plots. Propanil (Stam M4) and thiobencarb (Bolero 8 E) at 3 and 2 lb (AI)/acre, respectively, were applied for weed control on 12 Jun. Nitrogen was applied in a 3-way split of 90 lb N/acre as urea on 2 Jul and 30 lb N/acre on 23 and 31 Jul. Permanent flood was established on 27 Jun. Post-flood foliar treatments of Fury, Karate, and Dimilin were made with a CO2-pressurized backpack sprayer at 18 gpa. On 18 and 23 Jul three 4X4 inch (diam by depth) soil cores with an average of 3 plants/core were removed from plots. Soil was washed from the plant roots into a 40-mesh screen. The screen was immersed in salt water and RWW immatures were removed. Plots were harvested with a Yanmar combine on 7 Oct. Reported yields were adjusted to 12% moisture. Data were analyzed with an ANOVA and means separated with LSD.
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Rice water
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