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Heliothis as a pest of cotton

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Passlow, T. (1959) Heliothis as a pest of cotton. Queensland Journal of Agricultural Science, 16 (3). pp. 165-176.



Over the 10-year period 1948-1957, 13 trials with modern insecticides against Heliothis armigera (Hubn.) were conducted on both irrigated and rain-grown cotton in Central Queensland. Results from four of these trials show total yield increases after DDT applications which were successful in killing Heliothis armigera; the increase was economically significant in one instance only. During the 1955-56 season investigations were expanded to cover plant reaction to pest kills. Although goods kills of Heliothis and most other insects were obtained there was an increase in yields in the first pick but no differences among total yields. The killing of Heliothis caused the plants to hold larger percentages of early squares and bolls; later, however, fall from sprayed plants was sudden while that from unsprayed plants was gradual. Consequent replacement of squares and bolls was responsible for the levelling of total yields.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Subjects:Science > Entomology
Science > Zoology > Invertebrates > Insects
Plant culture > Field crops > Textile and fibre plants
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Pesticides
Live Archive:25 Jun 2024 02:58
Last Modified:25 Jun 2024 02:58

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