Which of the following soil elements becomes readily available at pH values above 8?
Molybdenum
Manganese
Zinc
Aluminium
Correct answer is B
No explanation has been provided for this answer.
Which of the following statements about soil water is true?
Crops wilt when gravitational water has drained off
Capillary water drains off after rainfall
A soil with high water table is best for farming
Crops utilize capillary water in the soil
Correct answer is D
No explanation has been provided for this answer.
Which of the following materials cannot be used for liming?
Gypsum
Basic slag
Chalk
Urea
Correct answer is D
No explanation has been provided for this answer.
The relative proportion of each fraction of soil in a soil sample determines its
Texture
Structure
Profile
Catena
Correct answer is A
No explanation has been provided for this answer.
Water-logged soils impede good crop growth and development because
The fibrous roots are destroyed
Crop roots are deprived of sufficient oxygen
Excessive water stops root growth
Soil around roots become too cold for root growth
Correct answer is B
No explanation has been provided for this answer.