A farmer is advised to use manure instead of fertilizer in his fields. List any two advantages that the farmer will get if he accepts this advice. How is the use of manure particularly useful for clayey and sandy soil?
Functions or advantages of manure:
i. Manure helps in enriching the soil with nutrients and organic matter and increasing soil fertility.
ii. The bulk of organic matter in manure helps in improving the soil structure. This involves increasing the water holding capacity in sandy soil.
iii. Manures contain substances which act as stimulants for seed germination and plant growth.
Manures make the clayey soil aerated because of their small pores and increase the water holding capacity of the sandy soil due to their large pore size.