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Insecticides to control sorghum midge Contarinia sorghicola (Coq.)

Rossiter, P. D. (1977) Insecticides to control sorghum midge Contarinia sorghicola (Coq.). Queensland Journal of Agricultural and Animal Sciences, 34 (2). pp. 147-150.

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Abstract

To determine a suitable alternative to DDT for the control of Contarinia sorghicola (Coq.) on sorghum, 7 insecticides (including DDT) were tested as high-volume sprays at intervals of 3-4 days during the flowering period in Queensland in 1969-71. Efficacy was assessed in terms of seed set. Monocrotophos, diazinon and carbaryl showed promise in screening trials, and were carried through to dosage level trials. Monocrotophos at 280 g/ha was the most effective but has been reported to be phytotoxic to sorghum. The next most effective compound, diazinon (applied at 280 g/ha), has become a general recommendation for the control of C. sorghicola in Queensland. ADDITIONAL ABSTRACT: In field trials on the Darling Downs in Queensland in 1969-71 the effect of 7 insecticides on the grain yield of plants infested with sorghum midge was studied. Monocrotophos, DDT, diazinon and carbaryl at 730 1/ha increased sorghum grain yield from 1.51 to 5.23, 6.02, 4.48 and 4.85 kg/plot, resp.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Keywords:control; insecticides; DDT; monocrotophos; diazinon; carbaryl; toxicity; plant pests; pesticides; cereals; chemical control; pest control; agricultural entomology Agricultural Entomology; Field Crops
Subjects:Plant culture > Field crops > Grain. Cereals
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Pesticides
Live Archive:04 Mar 2024 01:56
Last Modified:04 Mar 2024 01:56

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