Which of the following is not an effect of burning on the soil?

A. increasing the organic matter in the soil

B. increasing the soil nutrients

C. increasing the acidity of the soil

D. exposing the soil to erosion

E. sterilization of the soil

The function of soil micro-organisms include the following except

A. decomposition of dead plant and animal remains

B. recycling of nutrients

C. causing plant or animal diesases

D. living as parasites on crop plants

E. filtration of soil water for plant use

Slate is derived from

A. schist

B. sandstone

C. shale

D. gneiss

E. quartzite

The following are advantages of the sprinkler method of irrigation except

A. rate of application of irrigation water can be controlled

B. portable nature of many sprinkler system make them suitable for use

C. the sprinkler system can be made automatic

D. method can be where topography affects horrowing of land

E. method may be difficult for local farmers to use

Rhizobium supplies nitrogen to leguminous plants by

A. changing some mineral salts to sulphate of ammonia

B. incoporating urea into its body

C. fixing atmospheric nitrogen

D. decomposing plant remains

E. increasing the PH value of the soil

The advantage of providing drainage ditches in farms is that it

A. requires periodic clearing

B. is inconvenient for farm mechanization

C. is labour intensive

D. is unsuitable for draining basement of farm buildings

E. is easily adopted by samll scale farmers

Which of the following sources of farm power cannot be effectively used for processing agricultural products?

A. animals

B. electricity

C. sun

D. machines

E. wind

The instrument used to measure the relative humidity is

A. thermometer

B. anemometer

C. hygrometer

D. hydrometer

E. rain gauge

The most important limitation of agricultural mechanization is

A. small holdings

B. lack of technical know-how

C. poor marketing system

D. inadequate storage facilities

E. pest attack

The best tool(s) a farmer should use to measure out a large farm accurately include(s) the

A. garden line and measuring tape

B. measuring tape and ranging poles

C. measuring tape only

D. garden line only

E. ranging poles and garden line