Agricultural production in West Africa can be improved by the following practices except the

A. use of modern farm implements by farmers

B. legislation of communal land holding system

C. application of proven agricultural research findings

D. supply of improved seeds and livestock to farmers

A limitation to the practice of shifting cultivation in modern day agriculture is

A. prevalence of crop diseases

B. farm mechanization

C. population pressure

D. nomadic agriculture

Government finances agriculture through the following means except

A. reduction of tariffs on agricultural inputs

B. granting of subsidies to farmers

C. establishment of agricultural colleges

D. establishment of credit sources

The following are factors that affect agricultural development in West Africa except

A. transportation

B. rainfall

C. land tenure

D. pests and diseases

Termites are useful in agriculture because they

A. help control plant population

B. increase soil moisture

C. improve soil aeration

D. regulate soil temperature

A fresh soil sample of mass 180 g had a mass of 120 g after oven-drying. Determine the percentage water content of the soil.

A. 40.4%

B. 38.3%

C. 35.3%

D. 33.3%

The earthworm is important to the farmer because it

A. improves soil texture

B. destroys soil pathogens

C. checks soil erosion

D. improves soil structure

The soil water that is readily available for absorption by plant roots is called

A. capillary water

B. gravitational water

C. hygroscopic water

D. superfluous water

Farmers practice mixed farming because they can

A. easily secure loan to expand their farms

B. specialize in either the growing of crops or rearing of animals

C. use the manure from the animals to fertilize their crops

D. easily control pests and diseases on their farms

Which of the following factors should be considered in selecting cover crops? The cover crops must
I. be easy to propagate
II. compete with the main crops
III. have roots capable of binding soils
IV. be slow growing

A. I and II only

B. II and III only

C. I and III only

D. III and IV only