Multiple choice

Which of the following is a slow-release fertiliser used primarily as a source of phosphorus?

  1. Manure

  2. Alfalfa

  3. Sawdust

  4. Fish meal

  5. Bone meal
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Bone meal is a mixture of finely and coarsely ground animal bones and slaughter-house waste products. It is used as an organic fertiliser for plants and as a nutritional supplement for animals. As a slow-release fertiliser, bone meal is primarily used as a source of phosphorus.

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