Which of the following fertilizers is used as a cattle feed ?
Correct answer: B. Urea
- A. Calcium ammonium nitrate
- B. Urea
- C. Superphosphate
- D. Ammonium sulphate
Explanation
Urea supplies readily available nitrogen and is also used as a non-protein nitrogen source in cattle feed, where rumen microbes convert it into microbial protein. The other choices are mainly soil-applied fertilisers and are not used as cattle-feed nitrogen sources.
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