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Epidemics and Chemical Control of Leaf Curl Virus Disease of Tomato in the Sudan

Published online by Cambridge University Press:  03 October 2008

A. M. Yassin
A. M. Yassin
Affiliation:
Gezira Agricultural Research Station, Wad Medani, Sudan
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Summary

Tomato leaf curl virus disease (TLC) was checked by frequent and early applications of Anthio, Folimat, Malathion and Phosdrin against the aleyrodid vector, Bemisia tabaci. Conversely, up to two-fold increases of fruit yield resulted from such applications of the insecticides. Though seed-bed or field applications, separately, gave satisfactory results on occasions, treatments of the plants in the seed-bed and the field were often both essential. Field observations during the experimental period, over four consecutive seasons, showed peak infection rates within the first 8–12 weeks of tomato planting. There were marked inter-seasonal fluctuations of disease incidence, ranging from < 50 to 100 per cent. There was no clear correlation between spread of the disease and the wind direction. Epidemiological behaviour of the disease is discussed in relation to its chemical control.

Type
Research Article
Information
Experimental Agriculture , Volume 11 , Issue 3 , July 1975 , pp. 161 - 165
Copyright
Copyright © Cambridge University Press 1975

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References

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