WAEC Agricultural Science 2021 Theory question 101

Theory question 101

Agricultural Development

(a) Mention two roles of the governments of West African countries in agricultural development in each of the following areas: (i) agricultural finance; (ii) agricultural education; (iii) agricultural extension services; (iv) agricultural policies and programmes.
(b) State three structural differences between disc plough and disc harrow. (Use a table with the columns: Disc plough, Disc harrow.)
(c) Highlight four effects of the frequent use of disc plough on the soil.

Show the model answer
Model answer

(a)(i) Finance: give subsidies; provide loans/credit through agricultural banks; credit guarantee schemes; agricultural insurance.
(ii) Education: set up colleges and universities of agriculture; fund research institutes; train youths and farmers in agriculture.
(iii) Extension: employ and train extension workers; provide extension tools and transport; spread research findings to farmers.
(iv) Policies and programmes: formulate agricultural policies and laws; set up programmes (e.g. OFN, farm settlements, ADPs) and implement them.
(b) Disc plough: larger discs; fewer discs; discs spaced far apart and mounted individually, each at an angle. Disc harrow: smaller discs; many discs; discs close together on a common shaft in gangs.
(c) Any four: breaks down soil structure; causes compaction/hard pan below the plough layer; exposes soil to erosion; increases loss of organic matter and moisture; destroys soil organisms.

Explanation

Give each difference as a matched pair.