Irrigation Final Assessment

What percentage of the world’s fresh water withdrawals are used for irrigation? (a)  

• A. 75 percent
• B. 40 percent
• C. 60 percent
• D. 90 percent

Which of the following does NOT influence evapotranspiration? (a)  

• A. Temperature
• B. Stage of root growth
• C. Humidity
• D. Wind

What is the efficiency percentage of flood or furrow irrigation? (a)  

• A. 50 percent
• B. 40 percent
• C. 98 percent
• D. 10 percent

What percentage of water loss does an irrigation device which is only one to two feet from the ground have? (a)  

• A. 40 percent
• B. 98 percent
• C. 50 percent
• D. 10 percent

Which of the following is NOT a common type of irrigation? (a)  

• A. Bucket
• B. Surface
• C. Seepage
• D. Drip

Which of the following is an example of sprinkler irrigation? (a)  

• A. Pail or bucket
• B. Center pivot
• C. Drip
• D. Condensation

Which of the following is NOT a plant or soil condition which indicates a need for irrigation? (a)  

• A. Location of soil moisture
• B. Type of soil
• C. Evapotranspiration
• D. Plant height

What is the term for water held in the soil between field capacity and permanent wilting point? (a)  

• A. Water Tables
• B. Condensation
• C. Available water
• D. Rainwater harvesting

What are the two types of root systems called? (a)  

• A. Contained or spreading
• B. Fixed or localized
• C. Long or short
• D. Shallow or deep

Which of the following is NOT a control technology function discussed in this presentation?

• A. Start and stop equipment
• B. Speed up and slow down equipment
• C. Control chemigation and fertigation applications
• D. Provide current weather conditions