Answer:
slowing soil erosion
Step-by-step explanation:
Alley cropping is a very useful technique for improving poor soils, providing fodder for animals and protecting the soil from heavy rainfall.
Alley growing is a simple way to combine trees and crops. Rows of suitable trees are planted at a distance of 5 meters between rows, usually sowing the soil directly at the beginning of the rainy season. Between the tree rows, crops or vegetables are planted as usual. On sloping soils, rows are planted along contours - across the slope. Alley cultivation can also offer some protection during uneven rainfall as tree rows help to hold down rain on the soil.