A disadvantage of using organic manure on the soil is that
It decreases the potassuim content of the soil
Diseases spread fast
It increases the humus content of the soil
It reduces the rate of soil water evaporation
Correct answer is B
No explanation has been provided for this answer.
Which of the following processes will not lead to the loss of nutrients from the soil?
Erosion
Mulching
Harvesting
Leaching
Correct answer is B
No explanation has been provided for this answer.
Which of the following soil water is tightly held to the surface of soil particles?
Hygroscopic water
Gravitational water
Capillary water
Superfluous water
Correct answer is A
No explanation has been provided for this answer.
The most important soil micro-organism causing decay and nutrient recycling are
Bacteria and fungi
Fungi and algae
Algae and actinomycetes
Bacteria and algae
Correct answer is A
No explanation has been provided for this answer.
20
25
50
80
Correct answer is A
No explanation has been provided for this answer.