A perennial is a crop which

A. reaches maturity early and stops producing fruits before two years

B. can grow and produce fruits for more than two years

C. stops producing fruit two years after planting

D. cannot flower during two consecutive growing seasons

E. produces two harvests within a year

Common management particles in pastures include the following except

A. rotational grazing

B. weed and pest control

C. fertilizer application

D. paddocking

E. overstocking

Which of the following is not a characteristic feature of giant-star grass?

A. vigorous growth, spreading and perennial

B. possession of long and rapidly growing stems

C. drought resistant and ability to withstand continuous grazing

D. easy to eradicate once established

E. easily propagated from young cuttings

The process by which a forest is renewed artificially is known as

A. forest regeneration

B. forest plantation

C. selective exploitation

D. deforestation

E. taungya

Which of the following statements represents the best reason for making access roads in a forest plantation?

A. fire-fighting purposes

B. weeding

C. fertilizer application

D. mulching

E. erosion control

Which of the following is not a protective function of forests?

A. soil conservation

B. wind break

C. wildlife conservation

D. tourist attraction

E. erosion control

A common disease of onion is

A. leaf spot

B. root knot

C. leaf blight

D. twister

E. mosaic

Rice blast is caused by

A. a bacterium

B. a nematode

C. a virus

D. a fungus

E. an insect

Which of the following diseases of crops is not caused by a fungus?

A. panama disease of banana

B. smut of rice

C. mould of stored grain

D. streak of maize

E. black pod isease of cocoa

Biological control of insect pests of crops can best be carried out through

A. crop rotation

B. use of parasites and predators

C. soil fumigation

D. farm sanitation

E. use of resistance varieties