1. What is Potential Evapotranspiration of Maize?

Potential Evapotranspiration of Maize is the potential evaporation from soils plus transpiration by maize plants. It represents the maximum amount of water that would be evaporated and transpired if sufficient water were available.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( ET \) — Potential Evapotranspiration of Maize (m/s)
• \( ET_o \) — Reference Crop Evapotranspiration (m/s)

Explanation: The formula applies a crop coefficient of 0.80 to the reference evapotranspiration to estimate the specific water requirements for maize crops.

3. Importance of ET Calculation

Details: Accurate ET calculation is crucial for irrigation scheduling, water resource management, and optimizing crop yield in agricultural practices.

4. Using the Calculator

Tips: Enter the reference crop evapotranspiration value in meters per second. The value must be greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why use a coefficient of 0.80 for maize?
A: The 0.80 coefficient is based on research showing that maize typically requires about 80% of the reference evapotranspiration under optimal growing conditions.

Q2: What factors affect the crop coefficient?
A: Crop coefficients vary based on crop type, growth stage, climate conditions, and agricultural practices.

Q3: How often should ET calculations be made?
A: ET calculations should be made regularly throughout the growing season, as water requirements change with crop development and weather conditions.

Q4: Are there limitations to this calculation?
A: This calculation provides an estimate and may need adjustment based on local conditions, soil type, and specific maize varieties.

Q5: Can this be used for irrigation scheduling?
A: Yes, ET calculations are fundamental for developing efficient irrigation schedules and ensuring optimal water use in maize cultivation.