Modeling N fertilisation impact on water cycle and water use efficiency of maize, finger-millet and lablab crops in S-India

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driest year, the difference in maize WUE between the high and low N treatments was only 0.1 kg/m2/m, which corresponded with low actual to potential transpiration ratios (< 50%).This indicates higher sensitivity of maize to water stress compared to the other crops.The results of lablab indicate a positive impact of N fertilisation on WUE only under water-limited conditions.