Irrigation should be schedule when the soil temperature is moderate. In hotter season it is better to irrigate the field during the late afternoon or at night so that both soil and plant get sufficient time to absorb water before dry and desiccating weather prevails the next day. During the very cold season water should be applying during the morning hour, when the soil starts warning up. Frequent irrigation increases application loss and cost but it helps to increase use efficiency of fertilizer and other inputs. However, how much water should be applied in each irrigation depends on the need of the crop for water, the availability of water for irrigation, the capacity of the root-zone soil to store water, the season of raising the crop, the cultural practices and the anticipated rainfall.
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