Waec Agricultural Science 1998 Past Questions and Answers

Question 56:

• WAEC 1998

(a) Explain the term farm mechanisation (b) State seven advantages and seven disadvantages of farm mechanization

Question 57:

• WAEC 1998

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

Question 58:

• WAEC 1998

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

Question 59:

• WAEC 1998

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

Question 60:

• WAEC 1998

(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.