(a) Explain briefly four factors of soil formation. (b) List four chemical processes in the weathering of rocks.

Write short notes on the following: (a) bush burning; (b) clean clearing; (c) organic manuring

Describe briefly the production of cocoa under the following headings: - (a) method of propagation; (b) climatic a ( soil requirements.' (c) nursery requirement; (d) maturity period., (e) method of harvesting; (f) two major diseases and their control 

(a). State three effects of maize weevil on maize grains. (b) Explain briefly five general control measures of insect pests of grains in storage. (c) Name the vector for each of the following crop diseases: (i) groundnut rosette; (ii) maize streak; (iii) cassava mosaic. 

(a) State seven reasons for good housing in poultry management. (b) Describe briefly nine essential features of a poultry deep litter house