(a) Explain the following terms: (i) primary tillage implement; (ii) secondary tillage implement. (b) (i) State three reasons why disc ploughs are better su...

(a) Explain the following terms: (i) primary tillage implement; (ii) secondary tillage implement.

(b) (i) State three reasons why disc ploughs are better suited for soils in West Africa than the mouldboard ploughs. (ii) List six major parts of a disc plough.

(c) Give three reasons why secondary tillage is necessary before sowing of seeds. (d) State three precautions a farmer should take when spraying chemicals