Page 165 - Primary Five Science

Soil conservation is the practice of keeping soil fertile.

If is soil is not looked after property it can lead to soil exhaustion

(loss of fertility)

Causes of soil exhaustion

1. Soil erosion

2. Leaching

3. Monoculture

Leaching is the washing away of soil nutrients from the

top layer to the lower layer.

Causes of leaching

1. a) Soil erosion

2. b) Deep ploughing

Ways used in soil conservation

 By crop rotation

 By mulching gardens

 By applying artificial fertilizers

 By marking the gardens

 By cover cropping

 By bush fallowing

 By practicing agroforestry

 By growing legumes