The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is
- Aeffective rainfall
- Bconsumptive use
- Cconsumptive irrigation requirementCorrect
- Dnet irrigation requirement
Solution
Concept
Consumptive irrigation requirement
Step-by-step solution
1. CIR = consumptive use − effective rainfall.
Explanation
It is the irrigation water needed to meet evapotranspiration.
Why the other options are wrong
Net irrigation requirement includes leaching.
Shortcut
CIR = Cu − Re.
Correct answer: C) consumptive irrigation requirement