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.)

Mentioned in ?
References in periodicals archive ?
However, Felix Robles, Water Control chief of the National Irrigation Administration (NIA) in Bulacan, said the water in Angat Dam could still meet the irrigation requirement for rice crops in Bulacan and Pampanga, and domestic needs of Metro Manila
Sevilla added that after the water level plunges below critical level, "it is automatic that we give priority to the water supply in Metro Manila." "This reduction in irrigation requirement will have no significant impact as far as the cropping season in Bulacan and Pampanga is concerned.
lewis, "Irrigation Requirement of Arable Oregon Soils, Oregon State College," 1941, http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/15005/StationBul- letin394.pdf.
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 1.38 ML/ha.
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.
Of the total irrigation requirement of 24.24 million cubic metres, 57.6 per cent was to be met with reclaimed water and 42.4 per cent with groundwater.
Irrigation requirement of the agricultural sector owing to unreliability of the monsoons is driving the growth of this market.
But there is a large year-to-year variability in the irrigation requirement. 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 13.2%, 45.0%, and 59.0% total fresh biomass reduction respectively (Table 2).
Total surface water availability of the system is 128 BCM out of which 11.01 BCM is the non irrigation requirement for 2010-11 likely to increase to 18.87 BCM by 2024-25 due to rapid urbanisation and better sense of hygienic conditions.

Full browser ?