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Control of the Army Worm on Grazing in Kenya

Abstract

INFESTATIONS of Laphygma exempta Wlk. (Lep.-Noctuidae) on natural grazing present a problem in control because conventional tractor or aerial spraying is uneconomical, and aerial drift spraying is impractical on many farms due to their small area and irregular shape, and to the localization of cleared paddocks between strips of uncleared vegetation. Such infestations have therefore been considered uncontrollable and have been left to complete their cycle with a consequent severe loss of grazing. The development of the exhaust sprayer for the control of Schistocerca gregaria (Forsk)1,2 offered a cheap and speedy method of control and six tests with this appliance were performed by us on an outbreak in 1959.

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References

  1. Sayers, J. H., and Rainey, R. C., Desert Locust Survey (1958).

  2. Sayers, J. H., Bull. Ent. Res., 50, 371 (1959).

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  3. Courshee, R. J., Bull. Ent. Res., 50, 355 (1959).

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BULLOCK, J., BOND, D. Control of the Army Worm on Grazing in Kenya. Nature 192, 480–481 (1961). https://doi.org/10.1038/192480a0

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  • DOI: https://doi.org/10.1038/192480a0

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