a. What is the meaning of consumptive use in plants? Evapotranspiration? b. How important are the data on the efficiency of an irrigation system? c. Which of the various forms of water requirements is most important? d. If conveyance efficiency is 80% how much is the amount lost if 10 liters/second is available at the source? e. List three principal factors that influence the amount of consumptive use and the diversion requirement. f. Calculate the consumptive use rate of a crop approaching the fruiting period when evaporation is 8 mm/day. If seven days have elapsed since last irrigation how much water has been depleted from the soil? What depth of water should be applied if application efficiency is 50%? g. How does the crop water requirement vary with stage of crop growth and season of the year? h. A discharge of three cubic meters/second is diverted from a river in to a canal. Of this amount, 2.25 cu.m/s are delivered to the farms. Surface runoff from the irrigated areas averages about 450 liters/sec. Percolation to groundwater amounts to 300 liters/sec. What is the conveyance efficiency and application efficiency? i. State three conditions which lead to very low water application efficiency in most lowland rice farms in the Philippines.
a. What is the meaning of consumptive use in plants? Evapotranspiration? b. How important are the data on the efficiency of an irrigation system? c. Which of the various forms of water requirements is most important? d. If conveyance efficiency is 80% how much is the amount lost if 10 liters/second is available at the source? e. List three principal factors that influence the amount of consumptive use and the diversion requirement. f. Calculate the consumptive use rate of a crop approaching the fruiting period when evaporation is 8 mm/day. If seven days have elapsed since last irrigation how much water has been depleted from the soil? What depth of water should be applied if application efficiency is 50%? g. How does the crop water requirement vary with stage of crop growth and season of the year? h. A discharge of three cubic meters/second is diverted from a river in to a canal. Of this amount, 2.25 cu.m/s are delivered to the farms. Surface runoff from the irrigated areas averages about 450 liters/sec. Percolation to groundwater amounts to 300 liters/sec. What is the conveyance efficiency and application efficiency? i. State three conditions which lead to very low water application efficiency in most lowland rice farms in the Philippines.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:use in plants?
a. What is the meaning of consumptive
Evapotranspiration?
b. How important are the data on the efficiency of an irrigation system?
c. Which of the various forms of water requirements is most important?
d. If conveyance efficiency is 80% how much is the amount lost if 10
liters/second is available at the source?
e. List three principal factors that influence the amount of consumptive
use and the diversion requirement.
f. Calculate the consumptive use rate of a crop approaching the fruiting
period when evaporation is 8 mm/day. If seven days have elapsed
since last irrigation how much water has been depleted from the soil?
What depth of water should be applied if application efficiency is
50%?
g. How does the crop water requirement vary with stage of crop growth
and
season of the year?
h. A discharge of three cubic meters/second is diverted from a river in
to a canal. Of this amount, 2.25 cu.m/s are delivered to the farms.
Surface runoff from the irrigated areas averages about 450 liters/sec.
Percolation to groundwater amounts to 300 liters/sec. What is the
conveyance efficiency and application efficiency?
i. State three conditions which lead to very low water application
efficiency in most lowland rice farms in the Philippines.
Nue
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