19 Questions
What is the property of water that allows it to have two charged ends?
Cohesion
Which type of soil water moves through the soil due to gravity?
Gravitational water
What factor affects the amount of capillary water held in soil?
Organic matter content
Which type of water is generally not available for plant growth?
Hygroscopic water
Which soil texture would be expected to hold the most Plant Available Water based on the information provided?
Clayey loam, because it has a lot of internal surface area
What is the main reason water is essential for plant growth?
To transport nutrients in a dissolved state
What is the primary function of evapotranspiration in plants?
To cool down the plant
What does the water holding capacity of a soil refer to?
The ability of a soil to store water during wet periods for later use by plants
What is the main reason plant tissue is 50 to 90% water?
To maintain cell turgidity and transport nutrients in a dissolved state
Which type of water is held in the medium and fine soil pores against the force of gravity?
Capillary water
What affects the amount of gravitational water in a soil?
Amount of large soil pores present in the soil
Why is hygroscopic water generally NOT available for plant growth?
It is held too tightly for the plants to pull it out
What is Plant Available Water (PAW)?
Water held in the soil that is actually available for uptake by plants
Based on the information provided, which soil texture would be expected to hold the most Plant Available Water?
Clayey loam, because it has a lot of internal surface area
What is the primary reason for the soil water holding capacity?
To store water for plants during wet periods
Why does a plant with high water content have stiff cells?
As a result of water being stored in the plant's cells
What is the main role of evapotranspiration in plants?
To cool the plant through the process of transpiration
What causes soil to become anaerobic?
Saturated conditions from excess water
What is the primary function of capillary water in soils?
To provide water to plants between rain events
Explore the significance of soil water for plant growth and the variations in water-holding abilities among different soil textures. Learn about water use in plants, basic facts about water, categories of soil water, and the characteristics of soil textures in retaining water.
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