Assessment of climate change impact on maize (Zea mays L.) through aquacrop model in semi-arid alfisol of southern Telangana
2022-12-01 AGRICULTURAL WATER MANAGEMENT 2022 274(卷), null(期), (null页)
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The study was under taken at ICAR-CRIDA, Hyderabad (India) to assess the climate change impact on maize crop. There were five main irrigation treatments viz., I0, I1, I2, I3, I4, two sub treatments viz., M0 (no mulching), M1 (mulching @ 5 t ha-1 with glyricidia) and two sub-sub treatments viz., NF (normal fertilizer) and HF (high fertilizer) to study the effect of supplemental irrigation and crop management practices on maize grain yield and water productivity in semi-arid alfisols of Telangana state. The results of the study indicated that, the highest average grain yield of 3.19 t ha-1 was recorded in I4 and lowest was in I0 (1.78 t ha-1). The highest average water productivity (10.65 kg ha-1 mm-1) was recorded in I4 followed and the lowest was in I0 (7.60 kg ha-1 mm-1). The AquaCrop model was calibrated for simulation of grain yield and water productivity for all treatment levels and the prediction error statistics were 0.94 < E < 0.95 %, 0.06
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