Réponse:
No.1 Answer
While preparing spray solution
Always use clean water.
Use protective clothings viz., hand gloves, face masks, cap, apron, full trouser, etc. to cover whole body.
Always protect your nose, eyes, ears, hands, etc. ...
Read instructions on pesticide container label carefully before use.
No.2 Answer
Soil surfaces are generally hard in West Africa, which can be more easily worked by the disc plough than the mouldboard plough. (iii) Disc plough cuts deeper than mouldboard plough. (iv) Disc plough burries weed more effectively than mouldboard plough. (v) Disc plough works better onor clay soil than mouldboard.