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Potential Evapotranspiration of Very Dense Vegetation refers to the maximum amount of water that would be evaporated and transpired by a specific crop under optimal growing conditions with adequate water supply. It represents the combined processes of soil evaporation and plant transpiration.
The calculator uses the formula:
Where:
Explanation: The formula applies a crop coefficient of 1.3 to the reference evapotranspiration value to estimate the water requirements of very dense vegetation under optimal conditions.
Details: Accurate estimation of potential evapotranspiration is crucial for irrigation planning, water resource management, agricultural productivity optimization, and environmental impact assessments.
Tips: Enter the reference crop evapotranspiration value in meters per second (m/s). The value must be greater than zero for accurate calculation.
Q1: What is reference crop evapotranspiration (ETo)?
A: Reference crop evapotranspiration is the rate of evapotranspiration from a hypothetical reference crop with specific characteristics, typically well-watered grass of uniform height.
Q2: Why use a coefficient of 1.3 for very dense vegetation?
A: The 1.3 coefficient accounts for the higher water requirements of very dense vegetation compared to the reference crop, reflecting increased transpiration rates.
Q3: What factors influence potential evapotranspiration?
A: Solar radiation, air temperature, humidity, wind speed, and crop characteristics all influence potential evapotranspiration rates.
Q4: How is this calculation used in practice?
A: This calculation helps determine irrigation requirements, schedule watering, and manage water resources efficiently for agricultural and landscaping purposes.
Q5: Are there limitations to this equation?
A: This simplified approach assumes optimal growing conditions and may need adjustment for specific crop types, soil conditions, or local climate variations.