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CE2301-IRRIGATION-ENGINEERING-->View question

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It is the quantity of water used by the vegetation growth of a given area. It is the amount of water required by a crop for its vegetated growth to evapotranspiration and building of plant tissues plus evaporation from soils and intercepted precipitation. It is expressed in terms of depth of water. Consumptive use varies with temperature, humidity, wind speed, topography, sunlight hours, method of irrigation, moisture availability.Mathematically,

Consumptive use of water varies with:Evaporation which depends on humidity

Mean Monthly temperature

Growing season of crops and cropping pattern

Monthly precipitation in area

Wind velocity in locality

Soil and topography

Irrigation practices and method of irrigation

Sunlight hours

Following are the types of consumptive use,Optimum Consumptive Use

Potential Consumptive Use

Seasonal Consumptive Use

1. Optimum Consumptive Use:It is the consumptive use which produces a maximum crop yield.â€ƒ

2. Potential Consumptive Use:If sufficient moisture is always available to completely meet the needs of vegetation fully covering the entire area then resulting evapotranspiration is known as Potential Consumptive Use.

3. Seasonal Consumptive Use:The total amount of water used in the evapotranspiration by a cropped area during the entire growing season.

metaphor

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## Explain about Consumptive Use of water and its methods?

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## Answers

**Definition**It is the quantity of water used by the vegetation growth of a given area. It is the amount of water required by a crop for its vegetated growth to evapotranspiration and building of plant tissues plus evaporation from soils and intercepted precipitation. It is expressed in terms of depth of water. Consumptive use varies with temperature, humidity, wind speed, topography, sunlight hours, method of irrigation, moisture availability.Mathematically,

**Consumptive Use = Evapotranspiration = Evaporation + transpiration It is expressed in terms of depth of water.**

**Factors Affecting the Consumptive Use of Water**Consumptive use of water varies with:Evaporation which depends on humidity

Mean Monthly temperature

Growing season of crops and cropping pattern

Monthly precipitation in area

Wind velocity in locality

Soil and topography

Irrigation practices and method of irrigation

Sunlight hours

Types of Consumptive Water UseTypes of Consumptive Water Use

Following are the types of consumptive use,Optimum Consumptive Use

Potential Consumptive Use

Seasonal Consumptive Use

1. Optimum Consumptive Use:It is the consumptive use which produces a maximum crop yield.â€ƒ

2. Potential Consumptive Use:If sufficient moisture is always available to completely meet the needs of vegetation fully covering the entire area then resulting evapotranspiration is known as Potential Consumptive Use.

3. Seasonal Consumptive Use:The total amount of water used in the evapotranspiration by a cropped area during the entire growing season.

metaphor

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