Question 1
Cover crops incorporated into the soil with tillage prior to planting the primary crop in the rotation is known as a __________ .
◦ green manure crop
◦ N/A
Question 2
The time required for

to reach groundwater is very short in a sandy soil with a shallow __________, which represents the material below the rooting depth but above the aquifer.
◦ vadose zone
◦ N/A