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Organic fertilizers are fertilizer compounds that contain one or more kinds of organic matter. The ingredients may be animal or vegetable matter or a combination of the two. It is possible to purchase commercial brands of organic rich fertilizer as well as prepare organic fertilizer at home by building a compost heap.
User gUide. Organic Fertilizer calcUlatOr. A tool for comparing the cost, nutrient value, and nitrogen availability of organic materials. N. Andrews and J. Foster. Choosing an organic fertilizer can be difficult, as nutrient ratios, nitrogen availability, ease of use, and cost can vary widely among materials. This Excel-based calculator can. help you save time and money and avoid excessive or deficient fertilizer applications.