Agricultural Science

Which of the following sources of water is least useful for irrigation purposes?

A. sea B. river C. lake D. borehole Correct Answer: Option A - sea

6 years ago

Which of the following is not an effect of water-logging on crop production? it

A. inhibits plant development B. encourages leaching C. inhibits the activities of micro organisms in the soil D. causes plant…

6 years ago

In the process of recycling carbon in nature, carbondioxide is used by crops during?

A. respiration B. decomposition C. photosynthesis D. transpiration Correct Answer: Option C - photosynthesis

6 years ago

Nitrogen is taken up by plant roots in the form of?

A. nitrate ion B. nitrite ion C. nitric acid D. nitrogen gas Correct Answer: Option A - nitrate ion

6 years ago

Which of the following describes the effects of excessive nitrogen application on the growth of maize plants?

A. high vegetative growth with low yield B. high vegetative growth with high yield C. low vegetative growth with high…

6 years ago

Capillarity is highest in?

A. silt B. loam C. sand D. clay Correct Answer: Option D - clay

6 years ago

An acidic soil can be neutralized by the addition of?

A. urea B. ammonium sulphate C. wood ash D. laterite Correct Answer: Option C - wood ash

6 years ago

The most important factor that limits agricultural production in West Africa is?

A. temperature B. wind C. rainfall D. light Correct Answer: Option C - rainfall

6 years ago

The primary purpose of establishing wildlife reserve is to?

A. conserve animals for hunting B. prevent extinction of wild animals C. provide constant supply of meat for export D.…

6 years ago

Plant quarantine regulations are enforced to?

A. prevent the introduction of foreign pests and diseases B. increase the resistance of crops to diseases C. encourage the…

6 years ago