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Irrigation water is to be provided to a crop in a field to bring the moisture content of the soil from the existing 18% to the field capacity of the soil at 28%. The effective root zone of the crop is 70 cm. If the densities of the soil and water are 1.3 g/cm3 and 1.0 g/cm3 respectively, the depth of irrigation water (in mm) required for irrigating the crop is ________
  • a)
    9.1
  • b)
    8.1
  • c)
    7.1
  • d)
    91
Correct answer is option 'D'. Can you explain this answer?
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Depth of irrigation water
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Calculation of water required for irrigation:

1. Calculate the volume of soil to be irrigated:
- The effective root zone of the crop is 70 cm.
- Let the area of the field be 1 m2.
- The volume of soil to be irrigated = area x effective root zone = 1 m2 x 0.7 m = 0.7 m3.

2. Calculate the mass of water required to bring the moisture content of the soil to field capacity:
- The existing moisture content of the soil is 18%.
- The field capacity of the soil is 28%.
- The water required to bring the moisture content of the soil to field capacity = 0.1 x volume of soil x density of soil = 0.1 x 0.7 m3 x 1.3 g/cm3 = 91 g.

3. Calculate the depth of irrigation water required:
- The density of water is 1.0 g/cm3.
- The volume of water required = mass of water / density of water = 91 g / 1.0 g/cm3 = 91 cm3.
- Convert cm3 to mm by multiplying by 1 cm / 10 mm = 9.1 mm.

Therefore, the depth of irrigation water required for irrigating the crop is 9.1 mm, which is option D.
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Irrigation water is to be provided to a crop in a field to bring the moisture content of the soil from the existing 18% to the field capacity of the soil at 28%. The effective root zone of the crop is 70 cm. If the densities of the soil and water are 1.3 g/cm3and 1.0 g/cm3respectively, the depth of irrigation water (in mm) required for irrigating the crop is ________a)9.1b)8.1c)7.1d)91Correct answer is option 'D'. Can you explain this answer?
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Irrigation water is to be provided to a crop in a field to bring the moisture content of the soil from the existing 18% to the field capacity of the soil at 28%. The effective root zone of the crop is 70 cm. If the densities of the soil and water are 1.3 g/cm3and 1.0 g/cm3respectively, the depth of irrigation water (in mm) required for irrigating the crop is ________a)9.1b)8.1c)7.1d)91Correct answer is option 'D'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about Irrigation water is to be provided to a crop in a field to bring the moisture content of the soil from the existing 18% to the field capacity of the soil at 28%. The effective root zone of the crop is 70 cm. If the densities of the soil and water are 1.3 g/cm3and 1.0 g/cm3respectively, the depth of irrigation water (in mm) required for irrigating the crop is ________a)9.1b)8.1c)7.1d)91Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Irrigation water is to be provided to a crop in a field to bring the moisture content of the soil from the existing 18% to the field capacity of the soil at 28%. The effective root zone of the crop is 70 cm. If the densities of the soil and water are 1.3 g/cm3and 1.0 g/cm3respectively, the depth of irrigation water (in mm) required for irrigating the crop is ________a)9.1b)8.1c)7.1d)91Correct answer is option 'D'. Can you explain this answer?.
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