Agricultural Science Past Questions and Answers

(a) Describe briefly the Gunters' chain.
(b) A farmer surveyed his triangular farmland with a base length of 2 km and a perpendicular length of 1200m. Calculate the area of the farm.
(c) State four necessary precautions that should be taken in order to eliminate errors when chaining a farmland.
(d) List four factors required in choosing a site for a new school garden.

(a) In a tabular form, briefly discuss the following plant nutrients: (i) Potassium; (ii) Phosphorus; (iii) Calcium. Under the following headings: (i) form in which it is absorbed; (ii) three functions; (iii) one deficiency symptom.
(b) Give two examples of nitrogenous fertilizers.

(a) Define: (i) Taungya farming, (ii) Crop rotation.
(b) State four advantages of taungya farming.
(c) State four principles underlying the choice of a crop rotation system
(d) Enumerate four advantages of crop rotation.
(e) Under what situations would you recommend to a farmer to embark on crop rotation?

(a) State four ways in which ornamental plants are important. [4 marks]
(b) Give two examples each of (i) ornamental trees, (ii) ornamental shrubs. (c) Explain the following: (i) pasture, (ii) forage. (d) State four roles of legumes in agriculture.

(a) Discuss seven economic importance of insect pests in crop production.
(b) Name two hosts of cotton stainer.
(c) List two soil-dwelling insect pests of crops and state five general control measures of insect pests of crops.