The radishes are especially useful for no-till farmers. These farmers plant without plowing or otherwise turning the soil. Why? Tilling can cause soil to lose water. Dry soil is more likely to be lost to high winds or rain.

Tilling must have to do with __________.

A. Using a lot of fertilizer
B. Packing down the soil after crops are picked
C. Breaking up the soil to get it ready for planting
D. Choosing which crops to plant