Is there any practical model available to estimate fertilizer and water requirements of crops in arid regions under irrigated farming?
In Saudi Arabia, both the soil and water are highly saline and all the crops are irrigated via a central pivot system, mainly wheat, barley, alfalfa and forage grasses. Vegetable crops are either grown in greenhouses or in the field using drip (subsurface or above ground) or sprinkler systems. Needed is a basic model to determine fertilizer requirements of crops for a target yield using data on oil fertility, temperature, relative humidity, SAR, water quality etc.
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