Lab Exercise 3. Infiltration

Question 1

It is the process where water enters to the soil.

Answer 1

Infiltration

Question 2

It is a measure of how fast water enters to the soil (in/hr, cm/hr, in/min, cm/min

Answer 2

Infiltration Rate

Question 3

_____ leads to ponding, erosion from surface runoff, and inadequate moisture for crop production.

Answer 3

Low infiltration

Question 4

_____ recharges groundwater, can also lead to nitrate-nitrogen or pesticide leaching

Answer 4

High infiltration

Question 5

• It is the maximum rate at which water can enter the soil.
• It diminishes over time as the soil becomes saturated.

Answer 5

Infiltration Capacity

Question 6

Factors affecting infiltration

Answer 6

• Rainfall/Precipitation
• Base flow
• Soil characteristics
• Soil saturation
• Land cover
• Slope
• Evapotranspiration

Question 7

Some activities that lead to low or poor infiltration

Answer 7

• Farming practices
• Land development
• Other activities (such as driving vehicles or pulling logs over a soil surface, intensive recreational use (that compact soil surface), exposed soil to direct rain drop, etc.)

Question 8

Conservation practices that improve infiltration

Answer 8

1. Conservation Crop Rotation
2. Cover Crop
3. Prescribed Grazing
4. Residue and Tillage Management
5. Waste Utilization

Question 9

Measurement of Infiltration

Answer 9

1. Double ring Infiltrometer
2. Mini disk infiltrometer