Explanation:
(a) Roles of government in agricultural development
(i) Pest and disease control

Provision of drugs and vaccines that are used to protect farm animals against diseases and parasites-
Provision of agrochemicals such as pesticides, fungicides and herbicides which are used to protect crops from pests, diseases and weeds
Provision of veterinary services to control diseases of farm animals
Provision of quarantine services at airports, seaports and border posts to prevent the introduction of foreign pests and diseases
Provision of crop protection services
Training/education/enlightenment of farmers on pest and disease control
Provision of subsidy on agrochemicals
Establishment of research institutes for the prevention and control of pests and diseases


(ii) Marketing of agricultural produce

Purchase of excess farm produce during peak seasons to stabilize the price of farm produce
Fixes the guaranteed minimum price for agricultural produce
Establishment of strategic grain reserves by constructing silos in various locations for storage of excess farm produce for release during periods of scarcity
Provision of processing facilities such as rice mills, oil mills and cassava mills to
improve the quality of farm produce
Establishment of markets for agricultural produce
Provision of rural roads for the evacuation of farm produce
Provision of storage facilities
Establishment of marketing/commodity boards which help in the marketing of agricultural produce
Facilitate/encourage export of agricultural produce
Low taxation on agricultural produce
Establishment of commodity exchange commission

(b) General problems of land tenure system in agricultural development in West Africa

May be difficult to use land as collateral in obtaining loans
Farm planning and introduction of better farming systems are made difficult
Large scale farming is not possible due to excessive fragmentation of land
Production remains at the subsistence level
Much time is spent travelling from one piece of land to another
Interested framers from outside a community cannot easily acquire land
Ownership of land is not permanent, so economic crops cannot be grown
Land may belong to individuals who have no interest in agriculture
Dispute/litigation on land ownership
High cost of land acquisition

(c) Listing of farm machinery and implements
Farm machinery
- Tractor - Combine harvester - Sheller
- Dryer - Bulldozer - Tree puller
- Incubator - Milking machine - Mist blower
- Power tiller - Motorized knapsack sprayer - Lawn mower
- Motorized slasher

Farm implements
- Plough - Harrow - Mower/slasher
- Knapsack sprayer - Baler - Rotavator
- Ridger - Boom sprayer - Fertilizer - -spreader
- Cultivator - Harvester (tractor mounted) - Planter/seed drill/broadcaster