Practice Methods To Determine Ir (44.2.3) - Irrigation Requirement and Frequency of Irrigation

Practice: Methods to Determine IR

Lesson 44.2.3Irrigation Requirement and Frequency of Irrigation

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10 questions

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6 sample questions

Question 1.
What is Soil Moisture Deficit?
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Think about how much water is required compared to what is available.
Question 2.
What is the purpose of the Crop Coefficient?
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Consider how crops vary in water usage.
3Question 3.
What is the Soil Moisture Deficit?
- Difference between holding capacity and moisture present
- Total water in the soil
- Water lost to evaporation
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Think about the relationship of soil moisture and its capacity.
4Question 4.
True or False: The Pan Evaporation Method uses actual crop data to estimate water needs.
- True
- False
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What does the method actually measure?
Question 5.
A farmer wants to irrigate a field. The CWR is 120 mm, effective rainfall is 25 mm, groundwater contribution is 10 mm, and initial soil water is 5 mm. Calculate the irrigation requirement.
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Identify each contributing factor carefully.
Question 6.
During a hot season, a crop shows a Kc of 1.2 and the reference ET₀ is 6 mm/day. Calculate the crop's ET.
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What does this Kc value indicate during hot weather?

6 more questions in this section. Enroll free to practise them all.