(a)List three edaphic factor that influence crop growth. [3marks] (b) Explain the following terms as used in soil and water conservation: (i)gravitational w...

(a)List three edaphic factor that influence crop growth. [3marks]

(b) Explain the following terms as used in soil and water conservation: (i)gravitational water(ii)hygroscopic water [4marks]

(c) State two deficiency symptoms of each of the following nutrient elements in crops:(i)nitrogen; (ii) phosphorus; (iii)potassium [6marks]

(d) State three benefits derived from draining farmlands. [3marks]