Abstract
Thirteen experiment-station and farmer experiments to determine the agronomic and economic benefits related to the intercropping of potato with sugarcane were run from 1982 to 1987 under rainfed conditions in Bangladesh. Cane yield was enhanced when intercropped with potato, and the benefit was related to the use of residual P and K, and to a lesser extent N. In all experiments, net returns from cane intercropped with potato were greater than from sole cane, and were further increased by the use of mulch. Potato yield increased to the maximum population tested as an intercrop (10 plants m −2), but maximum net economic benefits were not always derived from the greatest populations. Changing the traditional single-row planting system of sugarcane for a double-row system, in which more space was available for the intercrop, did not reduce cane yield but facilitated the planting of high potato plant populations. It is concluded that the practice of intercropping potato with sugarcane exploits the temporal complementarity between crops to the benefit of the farmer.
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