LESSON 3:Estimation of Irrigation and Diversion Requirements

Question 1

Sum total of the water consumed or lost in the irrigated field during production period

Answer 1

Water Requirement

Question 2

This includes water losses due to percolation, evapotranspiration, seepage, and application losses in the form of volume and run-off and oveflowing water.

Answer 2

Field Requirement

Question 3

These are losses due to above processes along the conveyance channels

Answer 3

Conveyance and delivery requirement

Question 4

The total quantity of water diverted from a stream, lake, or reservoir or removed from the ground in order to irrigate a crop

Answer 4

Diversion Water Requirement

Question 5

Ratio of the average depth of irrigation water infiltrated and stored in the root zone to the average depth of irrigation water applied

Answer 5

Application Efficiency (Ea)

Question 6

mainly depends on the length of the canals, the soil type or permeability of the canal banks and the condition of the canals

Answer 6

Conveyance Efficiency

Question 7

Soil depth from which the bulk of the roots of the crop extracts most of the water needed for evapotranspiration

Answer 7

Effective Rooting Depth

Question 8

Analysis estimation of the chance or likelihood of the occurrence of a given event by determining the frequency curve of best fit to samples of hydrologic data

Answer 8

Hydrologic Frequency

Question 9

-Area to be irrigated
- Water Supply
- Soil
- Crop
- Meteorological Data
- Irrigation Method

Answer 9

Information known prior to determining irrigation water requirements

Question 10

The type of crop appropriate to the type of climate shall be selected to maximize the use of natural elements

Answer 10

Development of Cropping Calendar