A System of Vegetable Crop Rotation in Uganda

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Will A. G. K.
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Crop rotation is necessary to conserve soil fertility and prevent build-up of soil-borne disease. The vegetable grower's problem is greater than that of the arable farmer as a greater number of crop specie's are required for market. A planting plan to provide a continuous supply of produce throughout the year, yet ensure proper crop rotation, is therefore needed. Intensive cultivation, requiring greater use of organic manure, compost and fertilizers, also growing in soil blocks is usual. A three year two-year field rotation is described and its application discussed. Crops are grouped foot rotation purposes and the planting plan, designed for continuity of supply, is superimposed on the "blocks" (or fields) through a system of block division, both vertically and horizontally as detailed in the figures. Layout is suited to both hand and mechanical cultivation. Main camps in the rotation are each allocated a six month period. Where this is found to be too long, catch-cropping with unrelated species is advised
East African Agricultural And Forestry Journal, XXXIV (No. 2), p. 217-223