Which of the following macronutrients does not form components of fertiliser?

(1) N,P

(2) P,S

(3) K,S

(4) S,Zn

Nitrogen:
Find the incorrect one.
1. Plants compete with microbes for it.
2. It is a limiting nutrient for both natural and agricultural ecosystem
3. Nitrogen has triple covalent bonds
4. Nitrogen fixation is conversion of nitrogen into nitrate

In nature, ……….. and ……….. provide enough energy to convert Nitrogen to nitrogen oxides (NO, NO₂, N₂O).

Decomposition of organic nitrogen of dead plants and animals into ammonia is called

Which of the type of fixation leads to fixation of atmospheric nitrogen to ammonia?

Ammonia is first oxidized to nitrite by the bacteria except

Nitrite is oxidized to Nitrate by the bacterium

The nitrifying bacteria are

Denitrification occurs in

Plants absorb which form of Nitrogen?