1. What is Consumptive Use Efficiency?

Consumptive use efficiency is the ratio of consumptive water use by the crop of irrigated farm and the irrigation water stored in the root zone of the soil on the farm. It measures how effectively water is utilized by crops.

2. How Does the Calculator Work?

The calculator uses the Consumptive Use Efficiency formula:

Where:

• \( \eta_{cu} \) — Consumptive use efficiency (%)
• \( W_{cu} \) — Normal consumptive use of water (cm)
• \( W_d \) — Water depleted from root zone (cm)

Explanation: The formula calculates the percentage of water that is effectively consumed by crops compared to the total water depleted from the root zone.

3. Importance of Consumptive Use Efficiency

Details: This efficiency measurement is crucial for optimizing irrigation practices, improving water management in agriculture, and ensuring sustainable water use in farming operations.

4. Using the Calculator

Tips: Enter normal consumptive use of water and water depleted from root zone in centimeters. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is considered a good consumptive use efficiency value?
A: Higher values indicate better efficiency. Typically, values above 60-70% are considered good, but this can vary depending on crop type and local conditions.

Q2: How is normal consumptive use of water measured?
A: It is typically measured through field experiments, lysimeter studies, or calculated using evapotranspiration models and crop coefficients.

Q3: What factors affect consumptive use efficiency?
A: Irrigation method, soil type, crop variety, climate conditions, and farming practices all influence consumptive use efficiency.

Q4: How can I improve consumptive use efficiency on my farm?
A: Implementing efficient irrigation systems, proper scheduling, soil moisture monitoring, and selecting appropriate crops can help improve efficiency.

Q5: Is this measurement applicable to all types of crops?
A: Yes, the concept applies to all irrigated crops, though the optimal efficiency values may vary between different crop types and growing conditions.