A soil sample with a pHof 4.5 is said to be

The propety of soil which cannot easily be change by a famer is the

A farmer continuously applies sulphate of ammonia to his faemland for many years, the resulatant soil solution is most likely to

Application of water to the subsoil through perforated pipes is known as

Which of the following statements describe the impact of land degradation?
I. Increased availablity of fuel wood
II. Reduction in livestock production
III. Decrease in agricultural productivity
IV. Pollution of water bodies