Irrigation Requirement

Irrigation Requirement

 

the quantity of water that must be supplied to crops throughout the growing season. The irrigation requirement compensates for the shortage in the water balance per hectare of sown crop—that is, the difference between the total water consumption (expenditure of water on plant transpiration and evaporation from the soil) and the natural moisture supply in the soil. The irrigation requirement varies with climatic and weather conditions, soil properties, plant characteristics, and cultivation practices. In the USSR, the irrigation requirement is 6,000–10,000 m3ha for cotton, about 2,500 for cereals, and 2,000–12,000 for alfalfa, (see also.)

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Because 70% of the ground was covered by mature mango trees, the 198 mm of required irrigation was reduced by 30% to 138 mm and the total water requirements were 1,000,000 L = 1 ML and 100 mm/ha = 1 ML/ha for a total irrigation requirement of 1.
INWQS requires 0 TCU for irrigation requirement and raw groundwater colour failed to meet the requirement while treated groundwater value are closer to the acceptable range for the purpose.
2000) reported that WUE in wheat can be substantially improved by adopting deficit irrigation to satisfy up to 66% of irrigation requirement in West Asia and North Africa (WANA) regions.
Irrigation requirement of the agricultural sector owing to unreliability of the monsoons is driving the growth of this market.
When irrigating with 20 mm at a 20-ram trigger deficit, the annual irrigation requirement ranged from 240 to 480 man/year at Palmerston North, and from 260 to 640 mm/year at Winchmore, due to year-to-year variability in rainfall.
Irrigation treatments which received 25%, 50%, and 75% of the full irrigation requirement resulted in 13.
01 BCM is the non irrigation requirement for 2010-11 likely to increase to 18.
It should be noted that effective rainfall is considered in determining the field irrigation requirement.
The minimum irrigation requirement for all three species was less in September and October compared with that in July and August in both years.
The net irrigation requirement was based on the monthly consumptive use minus the monthly effective rainfall as determined by the soil conservation method (USDA-SCS, 1970).
Soil Conservation Service (SCS) field guides and handbooks, and state and field office representatives were consulted to compute a net irrigation requirement (NIR) for specific crops grown on each irrigated farm.

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