Ingredients of nursery fertilizers

Anonymous added on November 22, 2014 | Answered

I am working on project design & development of nursery fertilizer. I read in one of the papers that cow dung, sand & soil are the ingredients. If this is so, then what is the role of sand here? What should be the proportion of these ingredients in the mix?

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    Answered on November 22, 2014

    Sand is usually used for drainage. This sounds like a recipe for potting mix or planting soil rather than fertilizer. It's impossible to comment on the proportions without knowing more about the composition of the "soil" component, and the condition of the cow dung, i.e whether it is fresh, dried, or composted.

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