(ai) Explain three roles layed by each of the following factors in soil formation Time
(aii) Explain three roles layed by each of the following factors in soil formation Rainfall
(aiii) Explain three roles layed by each of the following factors in soil formation parent material
(b) Mention four principles which should be followed in a good crop rotation plan
(c) Give five uses of forage crops.
(ai) - it takes shorter time in the formation of immature soil
- it determines whether or not the soil is well develop
- it also takes along time for plant to decay and become part of the soil
(aii) - It helps to break down some parent rock to form soil
- it enhance vegetative growth of plants whose roots cause further breakdown
- it provides water for hydrolysis
(aiii) - it hardness affects the rate of sol formation
- They constitute major material from which soil is formed
- it determines the chemical composition of the soil formed
(b) - non-uniform of crops
- most exhaustive crops should be followed by less exhaustive crops
-Deep rooted crops should be succeed by shallow rooted crops
- Leguminous crops should be grown after non-leguminous crops
(c) - it is used for rooting farmstead
- it helps to prevent erosion
- it serves as cover crops
- it serves as food for livestock
- it is used as green manure
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