- 2077 Chaitra · 4 marks
Duty, delta, base period, crop period
Short answer
Duty: area (ha) irrigated by 1 cumec during the base period. Delta: total depth of water required (m). Base period: days from first to last irrigation. Crop period: total days from sowing to harvest.
Define: Duty, Delta, Base period and Crop period.
- Duty (): the area of crop (in ha) irrigated by one cumec of water supplied continuously for the base period of the crop. Unit: ha/cumec. It decreases from the field to the canal head because of losses.
- Delta (): the total depth of water required by a crop during its base period (in m or cm), if it were spread over the field. Related by (m).
- Base period (): the time between the first watering of a crop at sowing (or nursery) and its last watering before maturity/harvest, in days.
- Crop period: the total time from sowing to harvesting of the crop (days). It is a little longer than the base period, as it includes the time before the first watering and after the last watering.
✓ Answer checked by Claude Opus 5.5 (high effort)
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