The ratio between the area of a crop irrigated and the quantity o
The ratio between the area of a crop irrigated and the quantity of water required during its entire period of the growth, is known as
A. Delta
B. Duty
C. Base period
D. Crop period
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
Duty of canal water (D)
Duty is defined as the area of the land irrigated by a unit discharge of water flowing continuously for the duration of the base period of the crop.
\({\rm{D = }}\frac{{{\rm{Area}}\;{\rm{of}}\;{\rm{land}}\;{\rm{being}}\;{\rm{irrigated}}}}{{{\rm{Rate}}\;{\rm{of}}\;{\rm{water}}\;{\rm{supply}}}}{\rm{ = }}\frac{{\rm{A}}}{{\rm{Q}}}\)
Duty is measured in hectares/cumec (ha/cumec)
Delta of a crop (Δ):
It is defined as the total thickness of water required for complete maturity of the crop within its base period. It is measured in cm
Base period and crop period:
Base period:
It is the time lapse between first watering and last watering given to the plant or field of irrigation.
Crop period:
It is the time interval between instant of sowing and instant of harvesting.
