Why should not farmers burn dry leaves and otehr farm wastes ?

Paheli gave the following ill effects of the practice of burning dried leaves and other plant parts (i) Burning degrades the soil. (ii) Burning produces harmful gases/fumes. (iii ) Precious raw materials to obtain manure at low cost is lost. (iv) Lot of heat is generated unnecessarily. The correct reasons of why we should not burn leaves are

It is difficult to burn a heap of green leaves but dry leaves catch fire easily . Explain.

It is difficult to burn a heap of green leaves but dry leaves catch fire easily. Explain.