Sign In Question: If barley requires about 7.5 cm of water after every 30 days, and the base period for barley is 120 days, then find the value of delta for barley.
📌 Concept:
Duty:Â It is the number of hectares of land irrigated for full growth of a given crop by a supply of 1 cumec of water continuously during the entire base period of that crop.
Delta:Â The total water depth required by a crop to attain its full maturity in its base period.
Base Period:Â The time period that elapsed for the instant of the showing of crop to the instant of its harvesting is called base period or crop period.
Duty:Â It is the number of hectares of land irrigated for full growth of a given crop by a supply of 1 cumec of water continuously during the entire base period of that crop.
Delta:Â The total water depth required by a crop to attain its full maturity in its base period.
Base Period:Â The time period that elapsed for the instant of the showing of crop to the instant of its harvesting is called base period or crop period.
• The relation between Duty (D), Delta (Δ) and Base period (B) is given as:
Δ(metres)=8.64B/D
Δ=Base Period×Depth of Watering /Interval of Watering
• Calculation:
Δ=Base Period ×Depth of Water/ ingInterval of Watering
Δ=120×7.5/30
Δ = 30 cm
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