Hostname: page-component-5c6d5d7d68-sv6ng Total loading time: 0 Render date: 2024-08-15T02:59:51.927Z Has data issue: false hasContentIssue false

Cotton Spraying in Rhodesia

Published online by Cambridge University Press:  04 July 2016

D. R. Johnstone*
Affiliation:
Ministry of Overseas Development, Tropical Pesticides Research Unit, Salisbury, Wiltshire

Extract

The past decade has seen considerable advance in the production of cotton from Rhodesia and the adjacent former Federation territories of Malawi and Zambia, brought about very largely by the introduction of effective pest control measures originating from the work of the Cotton Pest Research Scheme, located at Gatooma, Rhodesia.

Complementary to a work programme investigating the type and formulation of insecticides capable of controlling an insect pest complex including bollworms, jassids, aphids and stainers, attention has been given to the design of spray equipment suited to both extensive European and intensive African forms of cultivation. The “tailboom” modification to the conventional knapsack sprayer has been developed and this versatile piece of equipment in several mechanised guises forms the basis of the recommended ground spray machinery.

Type
Agricultural Aviation Group
Copyright
Copyright © Royal Aeronautical Society 1966

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Burnett, G. F., Lee, C. W. and Park, P. O. Aerial spraying of insecticide concentrates. World Crops, June 1965.Google Scholar
2.Johnstone, D. R. Some effects of mode of operation on the dosage distributions obtained from a helicopter. Report of 2nd Int. Agric. Aviation Conf., Grignon 1962. pp. 298–304, IAAC 1963.Google Scholar
3.Johnstone, D. R. and Matthews, G. A.Comparative assessment of dosage distribution in cotton from helicopter and ground spray treatments. Ann. appl. Biol. Vol. 55, pp. 431438, 1965.CrossRefGoogle Scholar
4.Johnstone, D. R. and Matthews, G. A.Tests to determine the swath pattern and spray droplet size provided by a boom and nozzle installation fitted to a Hiller UH-12E helicopter. Agric. Aviation, Vol. 7, pp. 4652, 1965.Google Scholar
5.Matthews, G. A. and Tunstall, J. P.Aerial and ground spraying for cotton insect control in Rhodesia. Emp. Cott. Gr. Rev., Vol. 42, pp. 180192, 1965.Google Scholar
6.Tunstall, J. P., Matthews, G. A. and Rhodes, A. A. K.A modified knapsack sprayer for the application of insecticides to cotton. Emp. Cott. Gr. Rev., Vol. 38, pp. 2226, 1961.Google Scholar
7.Tunstall, J. P.Matthews, G. A. and Rhodes, A. A. K.Development of cotton spraying equipment in Central Africa. Emp. Cott. Gr. Rev., Vol. 42, pp. 131145, 1965.Google Scholar
8.Tunstall, J. P. and Matthews, G. A.Recent advances in the control of cotton insect pests in the Rhodesian and Nyasaland. Proc. Cent. Afr. Sci. and Med. Conf. Lusaka 1963. Pergamon Press, 1965.Google Scholar
9.Tunstall, J. P. and Matthews, G. A.Cotton insect control recommendations for 1963/64 in the Rhodesian and Nyasaland. Bull. 2209, Fed. Min of Agric, Salisbury: issued with Rhod. agric. J., Vol. 60, No. 5, 1963.Google Scholar
10.Whittam, D.New spinning nozzle for low volume aerial application. Agric. Aviation, Vol. 7, pp. 5152, 1965.Google Scholar