Stubble burning is the practice of intentionally setting fire to the straw stubble that remains after grains, such as rice and wheat, have been harvested. The technique was widespread until the 1990s, when governments increasingly restricted its use.
Generally helpful effects :
Cheaper and easier than other methods
Helps to combat pests and weeds
Can reduce nitrogen tie-up
Generally harmful effects :
Loss of nutrients
Many gases are released which are very harmful
Some gases released from stubble burning are cause of holes in ozone layer
Pollution from smoke
Increased greenhouse gases in the atmosphere, contributing to global warming
Damage to electrical and electronic equipment from floating threads of conductive waste
Risk of fires spreading out of control
Agriculture residues can have other uses, such as in particle board and biofuel, though these uses can still cause problems like erosion and nutrient loss.