Water which rises above the water table in the soil and is held in fine medium pores between soil particles by surface tension is?

A. hygroscopic water

B. gravitational water

C. capillary water

D. percolating water

An oven dried soil sample of mass 8g had a mass of 1.6g after it was completely burnt. Determine the percentage of humus in the soil sample.

A. 6.4%

B. 9.6%

C. 20%

D. 80%

The deficiency of nitrogen in a maize plant can be corrected by applying?

A. potassium chloride

B. muriate of potash

C. sulphate of ammonia

D. calcium carbonate

The structure of sandy soils can be described as?

A. platy

B. crumby

C. single-grained

D. bloc

The cropping system illustrated in the table is?

A. mixed cropping

B. crop rotation

C. shifting cultivation

D. land rotation

Which of the following crops can conveniently replace maize in the table?

A. cassava

B. cashew

C. mango

D. millet

The following bacteria are important in the nitrogen cycle except?

A. bacillus

B. nitrobacter

C. nitrosomonas

D. rhizobium

Determine the ratio of nutrients in NPK 5-10-15.

A. 1:2:2

B. 1:2:3

C. 1:3:1

D. 2:1:3

Which of the following methods of irrigation is most efficient in terms of water conservation?

A. flood irrigation

B. furrow irrigation

C. border irrigation

D. drip irrigation

Which of the following crops is dicotyledonous?

A. Zea mays

B. Oryza sativa

C. Elaeis guineensis

D. vigna unguiculata