2795)Which of the following is NOT a method of measuring irrigation water flow?
Anonymous Quiz
14%
Water meters
30%
Orifices
49%
Tensiometer
8%
Parshall flumes
2796)What is the primary factor affecting the water requirements of crops in the climatological approach?
Anonymous Quiz
14%
Soil moisture retention
19%
Crop growth stage
64%
Evapotranspiration rate
3%
Water runoff
2797)How does the "Parshall flume" work in measuring irrigation water flow?
Anonymous Quiz
8%
By measuring the flow at the edges of an orifice
17%
By estimating the velocity of water using a float
75%
By forcing water through a narrow throat and measuring head loss
0%
By calculating evaporation from an open pan
2798)What is the main advantage of the "plant-based approach" in irrigation scheduling?
Anonymous Quiz
0%
It is based on soil moisture content
62%
It directly responds to plant water stress
3%
It requires minimal equipment
35%
It uses evaporation data to estimate crop water use
2799)Which of the following is an indicator of plant water stress?
Anonymous Quiz
3%
Increased leaf area
41%
Yellowing of the leaves
8%
Improved root growth
49%
Leaf wilting
2800)What is the "duty of water" used for in irrigation systems?
Anonymous Quiz
11%
To estimate water availability for the entire field
86%
To calculate the volume of water required to grow a specific crop
0%
To measure soil moisture levels
3%
To determine irrigation equipment efficiency
2801)What is the most common disadvantage of using water meters in irrigation systems?
Anonymous Quiz
11%
High installation cost
65%
Poor accuracy in low flow conditions
11%
Requires regular maintenance
14%
Cannot be used in open channels
2802)What is the main disadvantage of the "climatological approach" for irrigation scheduling?
Anonymous Quiz
13%
It requires highly accurate weather data
16%
It is only suitable for certain crop types
71%
It is complex to apply in areas with varied climate conditions
0%
It needs expensive equipment
2803)What is the role of "effective rainfall" in irrigation requirements?
Anonymous Quiz
95%
It contributes to the total irrigation requirement by reducing the amount of applied water
5%
It determines the efficiency of the irrigation system
0%
It increases the crop water stress
0%
It is unrelated to irrigation scheduling
2804)In which irrigation scheduling method is the rate of evaporation from an open pan important?
Anonymous Quiz
44%
Soil moisture depletion method
47%
Climatological approach
0%
Plant-based approach
8%
Volumetric method
2805)How does the "water diffusion resistance" of plants help in irrigation scheduling?
Anonymous Quiz
28%
It measures the speed at which water moves through the soil
11%
It indicates the degree of plant wilting
56%
It helps to predict when to irrigate based on plant's water stress
6%
It measures the amount of water vapor released by plants
2806)How does "leaching" affect the root zone in irrigation?
Anonymous Quiz
8%
It increases the nutrient concentration in the root zone
86%
It removes excess salts and nutrients from the root zone
3%
It decreases soil permeability
3%
It improves water retention in the soil
2807)What is the primary benefit of using the "soil moisture depletion" method in irrigation scheduling?
Anonymous Quiz
5%
It is simple and easy to implement
89%
It provides accurate water requirements based on soil moisture levels
3%
It is highly accurate for large fields
3%
It requires minimal equipment
2808)What does "contingency irrigation" refer to in irrigation management?
Anonymous Quiz
20%
Irrigation used for crop growth during dry spells
51%
Irrigation applied in case of an irrigation system failure
24%
Emergency irrigation applied during drought
5%
Supplemental irrigation for dryland crops
2809)How is water use efficiency improved when using the "climatological approach" to irrigation scheduling?
Anonymous Quiz
0%
By considering soil moisture retention
90%
By adjusting the irrigation amount based on cumulative evaporation
5%
By providing irrigation at fixed times
5%
By using real-time crop growth data
2810)Which irrigation scheduling approach involves using real-time weather data to estimate irrigation needs?
Anonymous Quiz
37%
Climatological approach
53%
Soil moisture depletion method
2%
Plant-based approach
7%
Evapotranspiration approach
2811)Which of the following is an essential tool for measuring soil moisture content in the "soil moisture depletion method"?
Anonymous Quiz
32%
Gypsum block
30%
Tensiometer
39%
Soil moisture probe
0%
Water meter
2812)What is the most commonly used device for measuring water flow in open channels?
Anonymous Quiz
11%
Water meter
16%
Tensiometer
70%
Parshall flume
2%
Soil moisture probe
❤1
2813)What does the "effective rainfall" (ER) component account for in irrigation requirements?
Anonymous Quiz
83%
The water supplied by rainfall that is available to crops
4%
The total volume of rainfall
10%
The amount of water evaporated from the soil
2%
The loss of water through runoff
2814)What is the main advantage of the "tracer method" in water flow measurement?
Anonymous Quiz
15%
It is cost-effective and requires minimal equipment
70%
It is accurate even without measuring the stream cross section
11%
It can be used in any water body regardless of size
4%
It measures the rate of evaporation accurately
❤1