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- Discharge and pressure (or head) required
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NatalieR answered the question on June 30, 2022 at 08:42
- An irrigation stream of discharge 27m/s is diverted to a check basin of size 12m by 10m. The water holding capacity of the soil is...(Solved)
An irrigation stream of discharge 27m/s is diverted to a check basin of size 12m by 10m. The water holding capacity of the soil is 14%. The average soil moisture content in the crop root zone prior to applying water is 6.5%. If the average depth of the crop root zone is 1.2m, and the apparent specific gravity of the root zone is 1.50, determine how long the irrigation stream should be applied to the basin to replenish the root zone moisture to field capacity.
Given, Discharge, Q = 27 lit/sec
Area, A = 12 m × 10 m = 120 m2
Water holding capacity = 14%
Moisture content before irrigation = 6.5%
Depth of root zone, d = 1.2 m
Apparent specific gravity of the root zone soil = 1.5
Date posted: June 30, 2022. Answers (1)
- The following data was used for irrigation a rectangular piece of land measuring:
360m by 240m using sprinkler irrigation;
Field capacity 22%
Wilting point 12%
Soil water holding capacity...(Solved)
The following data was used for irrigation a rectangular piece of land measuring:
360m by 240m using sprinkler irrigation;
Field capacity 22%
Wilting point 12%
Soil water holding capacity 1000mm per meter depth of soil
Root zone depth for crop in the field 1.2m
Soil bulk density 1.2g/cm3
Irrigation application efficiency 80%
Using the data provided calculate;
i) Net water requirement in mm
ii) Gross water requirement in mm
iii) Irrigation interval assuming that no rain falls during this period
iv) The volume of water in meters required to cover the whole field
Date posted: June 30, 2022. Answers (1)
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- Determine the discharge capacity of an underground concrete pipeline given that;
Diameter of pipeline – 15 cm
Length of pipeline – 300m
Darcy’s roughness coefficient – 0.009
Difference in...(Solved)
Determine the discharge capacity of an underground concrete pipeline given that;
Diameter of pipeline – 15 cm
Length of pipeline – 300m
Darcy’s roughness coefficient – 0.009
Difference in elevation between water levels at pump-stand and discharge point – 2m
Date posted: June 30, 2022. Answers (1)
- Explain the following irrigation requirements
i) Net irrigation requirement
ii) Gross irrigation requirement
iii) Consumption use
iv) Irrigation interval
(Solved)
Explain the following irrigation requirements
i) Net irrigation requirement
ii) Gross irrigation requirement
iii) Consumption use
iv) Irrigation interval
Date posted: June 30, 2022. Answers (1)
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- Determine;
i) The moisture content at different depths in the root zone
ii) Moisture content in the root zone at the time of irrigation
iii) Net depth of...(Solved)
The following data was collected to determine the soil moisture content at successive
depths in the root zone before irrigation;
Given that the bulk density of the soil in the root zone is 1.60g/cc and the available moisture
holding capacity of the soil was 16.9cm/m depth, determine;
i) The moisture content at different depths in the root zone
ii) Moisture content in the root zone at the time of irrigation
iii) Net depth of water to be applied to bring the moisture content to field capacity
iv) Gross irrigation requirement at an estimated irrigation efficiency of 80%
Date posted: June 29, 2022. Answers (1)
- Define the following terms
i. Saturation Capacity
ii. Ultimate wilting point(Solved)
Define the following terms
i. Saturation Capacity
ii. Ultimate wilting point
Date posted: June 29, 2022. Answers (1)