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The duty of irrigation water for a given crop is maximum
- a)on the field
- b)at the head of the main canal
- c)at the head of the water-course
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
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The duty of irrigation water for a given crop is maximuma)on the field...
Concept:
Duty:
Duty:
- 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.
- Duty is the area that can be irrigated by the discharge of 1 cumec of water.
- At the head of the canal, there are numerous losses to occur later which requires more amount of water to irrigate a particular field. However, if considered on the field, all losses have already occurred and a lesser amount of water is required to irrigate the same considered area.
- Duty of water changes from place to place, it will be maximum at the field and minimum at the head of the canal.
Most Upvoted Answer
The duty of irrigation water for a given crop is maximuma)on the field...
Irrigation water duty for a given crop
Irrigation water duty refers to the amount of water required to irrigate a given area of land for a particular crop. It is expressed in volume per unit area and is usually measured in cubic meters per hectare.
Factors affecting irrigation water duty
The irrigation water duty for a given crop depends on several factors, including:
1. Climate: The amount of water required for irrigation varies with the climate of the region. Crops grown in arid regions require more water than those grown in humid areas.
2. Soil type: The nature of the soil also affects irrigation water duty. Sandy soils require more frequent irrigation than clay soils.
3. Crop type: Different crops have different water requirements. For example, rice requires more water than maize.
4. Crop stage: The irrigation water requirement also varies with the growth stage of the crop. Young plants require more water than mature plants.
5. Irrigation method: The irrigation method used also affects the water requirement. Flood irrigation requires more water than drip irrigation.
Maximum water duty on the field
The maximum irrigation water duty for a given crop is at the field level. This is because:
1. Losses: As water moves from the head of the main canal to the field, there are several losses due to evaporation, seepage, and percolation. These losses reduce the amount of water available for irrigation.
2. Soil type: The nature of the soil also affects the irrigation water duty. Sandy soils have a low water-holding capacity and require more frequent irrigation than clay soils.
3. Crop type: Different crops have different water requirements. The irrigation water duty for rice, for example, is higher than that for maize.
4. Crop stage: The water requirement of a crop varies with its growth stage. Young plants require more water than mature plants.
Therefore, to ensure that a crop receives the required amount of water, the irrigation water duty should be calculated at the field level. This will help to determine the amount of water required for each crop at different growth stages, taking into account the soil type, climate, and irrigation method used.
Irrigation water duty refers to the amount of water required to irrigate a given area of land for a particular crop. It is expressed in volume per unit area and is usually measured in cubic meters per hectare.
Factors affecting irrigation water duty
The irrigation water duty for a given crop depends on several factors, including:
1. Climate: The amount of water required for irrigation varies with the climate of the region. Crops grown in arid regions require more water than those grown in humid areas.
2. Soil type: The nature of the soil also affects irrigation water duty. Sandy soils require more frequent irrigation than clay soils.
3. Crop type: Different crops have different water requirements. For example, rice requires more water than maize.
4. Crop stage: The irrigation water requirement also varies with the growth stage of the crop. Young plants require more water than mature plants.
5. Irrigation method: The irrigation method used also affects the water requirement. Flood irrigation requires more water than drip irrigation.
Maximum water duty on the field
The maximum irrigation water duty for a given crop is at the field level. This is because:
1. Losses: As water moves from the head of the main canal to the field, there are several losses due to evaporation, seepage, and percolation. These losses reduce the amount of water available for irrigation.
2. Soil type: The nature of the soil also affects the irrigation water duty. Sandy soils have a low water-holding capacity and require more frequent irrigation than clay soils.
3. Crop type: Different crops have different water requirements. The irrigation water duty for rice, for example, is higher than that for maize.
4. Crop stage: The water requirement of a crop varies with its growth stage. Young plants require more water than mature plants.
Therefore, to ensure that a crop receives the required amount of water, the irrigation water duty should be calculated at the field level. This will help to determine the amount of water required for each crop at different growth stages, taking into account the soil type, climate, and irrigation method used.
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