Abstract
Abstract Crop yields by pearl, foxtail, and proso millet cultivan grown under various drought conditions on loamy sand arid soils were determined in field trials covering three consecutive seasons. The average yield for pearl millet under normal sowing (leading to moderate drought stress) was 1026 kg grain ha−1. Under similar conditions, the foxtail and proso millets produced 62 and 66% less grain than pearl millet. In late sowings, where all crops encountered prolonged drought, pearl millet yielded 223 kg grain ha−1 while small millets produced about 5% as much. The greater drought tolerance of pearl millet was ascribed to its well‐developed root system. Root dry weight was strongly correlated (r = 0.966) with grain yields. Under arid conditions drought tolerance may be a more desirable characteristic than drought avoidance. Applications of N (to 40 kg ha−1) reduced the adverse effects of drought on crop yields. Consumptive use by pearl millet was 35–42% higher than by small millets but gave three‐ to fo...
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