(a) Name six Government and four Non-Governmental Organisations (NGOs) that are involved in the improvement of agricultural production in West Africa.

(b) Mention five ways in which Non-Governmental Organisations contribute to agricultural productivity in West Africa.

(c) Explain briefly six ways by which the application of science and technology last helped to boost crop production in your country.

(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.