Water consumption by dryland crops as related to pan evaporation
Lysimeter data, especially for sorghum and millet have been analysed to know the water consumption at various growth phases. Results are compared with the pan evaporation for ready reference to estimate water requirement of these crops. The study reveals that the ratio of actual evapotranspiration and pan evaporation at different growth phases varies from. 49 to 71 and from. 56 to. 72 for sorghum and millet respectively. These ratios in a few individual weeks, especially in the vegetative phase exceed one. Water used by sorghum and millet during the whole life span IS, on an average, 61 and 66 per cent of pan evaporation respectively.
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