Some farmers feel that lightening helps in producing a better crop. What is the scientific reason behind this ?

Explanation

Lightening taking place from time helps in converting atmospheric nitrogen and oxygen into nitric acid as a result of series of reactions.
`N_(2)(g) +O_(2)(g) overset(("Lightening")) to 2NO(g)`
`2NO(g)+O_(2)(g) to 2NO_(2)(g)`
`4NO_(2)(g) +O_(2)(g)+2H_(2)O(l) to 4HNO_(3)(aq)`
Nitric acid dissolves in rain water and is converted into calcium nitrate by reacting with calcium salts present in the soil. Calcium nitrate and other nitrates are the nutrients for the soil which gives better yield of crop.