1. Water which is lost from the root zone though downward percolation may move b

ID: 289857 • Letter: 1

Question

1. Water which is lost from the root zone though downward percolation may move back into the plant root zone during dry periods by

A. gravitation force B. osmotic force C. capillary movement D.evaporation E. runoff

2. Which of these farming practices will not help to control water loss through evaporation?

A. Vegetative mulches B. Furrow irrigation C. plastic mulches D. conservation tilage E. crop residue management

3. Which of these processes best describe the portion of precipitation or irrigation water that does not make contact with the soil?

A. Interception B. infiltration C. transpiration D. evaporation E. drainage

4.______ contributes to storm flow in streams and moves both soil particles and chemicals

A. subsurface drainage B. percolation C. surface runoff D. evaporation E. transpiration

5. Compared to that in large soil pores, water found in small pores _____

A. has higher energy level B. is held more tightly by the soil C. is easier for plant roots to take up

D. is more susceptible to percolation by gravity E. has higher soil water potential

1.C. capillary movement.

Water moves back into the plant root zone during dry periods (periods of low rainfall) by rise of capillary water.

2. Furrow irrigation

In the Furrow irrigation (surface irrigation ) water losses happen by

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