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Pakistan Journal of Biological Sciences

Year: 2005 | Volume: 8 | Issue: 4 | Page No.: 567-570
DOI: 10.3923/pjbs.2005.567.570
Effect of Power on Droplet Size by Hand Held Spinning Disc Sprayer
Muhammad Ishfaque, Muhammad Ashfaq and Ali H. Sayyed

Abstract: A comprehensive study was carried out on the effect of power (batteries) on the droplets with the objectives to minimise dose rate and maximise mortality, by avoiding the wastage of pesticides. Droplet distributions were obtained over a range of rotation speeds by using different nozzles. The data obtained using various batteries indicate that the speed was directly proportional to numbers of batteries used while the droplet size was inversely proportion to the speed of disc. With increasing problems in controlling some cotton pests, particularly those on the under-surface of leaves, these results indicate that it may now be worth re-exploring the issue of using charged sprays.

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How to cite this article
Muhammad Ishfaque, Muhammad Ashfaq and Ali H. Sayyed, 2005. Effect of Power on Droplet Size by Hand Held Spinning Disc Sprayer. Pakistan Journal of Biological Sciences, 8: 567-570.

Keywords: Spinning disc, ULV sprayer, droplet size, nozzle and cotton pests

REFERENCES

  • Dobson, H., 1999. Advances in locust spraying technology. Insect Sci. Applied, 19: 355-368.


  • Cooper, J.F., K.A. Jones and G. Moawad, 1998. Low volume spraying on cotton: A comparison between spray distribution using charged and uncharged droplets applied by two spinning disc sprayers. Crop Prot., 17: 711-715.


  • Swithenbank, J., J.M. Beer, D.S. Taylor, D. Abbott and G.C. McCreaton, 1976. A laser diagnostic technique for the measurement of the droplets and particle size distribution. Am. Inst. Aeronautics Astronautics, 5: 76-79.


  • AbdelBagi, H.A. and A.J. Adams, 1987. Influence of droplet size, air assistance and electrostatic charge upon the distribution of ULV sprays on tomatoes. Crop Prot., 6: 226-233.


  • David, B.V. and R.W.A. Jesudasan, 1986. Status of whitefly, Bemisia tabaci (Gennadius) excluding its vector biology. Pesticides, 20: 42-47.


  • Cooper, J.F. and D.R. Johnstone, 1979. The new Mini-ULVA. A hand-held,battery-operated ultra-low-volume sprayer. Miscellaneous Report No. 49. Ministry of Overseas Development, London, pp: 9.


  • Nyirenda, G.K.C., 1986. Studies of the effects of insecticide application on cotton in Malawi. Ph.D. Thesis, University of London.


  • Dittrich, V., S. Uk and G.H. Ernst, 1990. Chemical Control and Insecticide Resistance of Whiteflies. In: Whiteflies: Their Bionomics, Pest Status and Management, Gerling, D. (Ed.). Intercept Andover, UK., pp: 263-285

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