Which one of the following fertilizers leaves maximum acidity in the soil?

The element not provided by the fertilizers is –

Which of the statements given is incorrect?

Which form of nitrogen is available in urea?

Consider the following statements in reference to green manure and select the incorrect statement using the codes given below : (A) Green manure is rich in organic matter and nutrients. (B) Green man…

Nitrogen is taken by plants in the form of :