1. What is Potential Evapotranspiration of Sugarcane?

Potential Evapotranspiration of Sugarcane is the potential evaporation from soils plus transpiration by sugarcane 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 Crop (m/s)
• \( ETo \) — Reference Crop Evapotranspiration (m/s)

Explanation: The formula applies a crop coefficient of 0.9 to the reference evapotranspiration to estimate the specific water requirements for sugarcane.

3. Importance of ET Calculation

Details: Accurate ET estimation is crucial for irrigation scheduling, water resource management, and optimizing sugarcane crop production while conserving water resources.

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 0.9 for sugarcane?
A: The 0.9 coefficient accounts for the specific water requirements and transpiration characteristics of sugarcane crops compared to the reference grass crop.

Q2: What factors affect sugarcane evapotranspiration?
A: Climate conditions, crop growth stage, soil moisture, and agricultural practices all influence the actual evapotranspiration rates.

Q3: How often should ET calculations be made?
A: Regular calculations throughout the growing season are recommended, especially during critical growth stages and varying weather conditions.

Q4: Are there limitations to this calculation?
A: This provides an estimate; actual field conditions, soil types, and specific crop varieties may require adjustments to the coefficient.

Q5: How is this used in irrigation planning?
A: ET values help determine the optimal irrigation schedule and water application rates to meet crop water requirements while avoiding water stress.