Explain water requirements and irrigation methods.

Explanation should include

• how water moves in the soil
• reasons why not all water in the soil is available for plant use
• how to determine when grass needs watering
• the manner of water application
• the amount of water to apply
• the frequency of irrigation
• how to determine moisture requirements of various grasses and plants
• how to determine the best irrigation method
• how chemicals, nutrients, and pesticides can be integrated into the watering cycle of different types of irrigation systems.

Process/Skill Questions:

• What are the advantages and disadvantages of irrigation to deliver chemicals, nutrients, and pesticides?
• What is the relationship among water, soil, and plants in terms of effective use of irrigation?
• What factors influence the timing of water application?
• What are the advantages and disadvantages of different types of irrigation systems?