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PDF | Organic fertilizer refers to materials used as fertilizer that occur regularly in nature, usually as a by product or end product of a naturally. Influence of Organic Fertilizer on Soil.pdf. Keywords: Organic fertilizer; physic nut; nutrient content; soil chemical properties; yield. 1. We use free-range chicken manure (non-organic origin). → But what if chicken have to be kept inside (frost, disease risk)??.Compost is a highly valuable fertilizer in organic farming. Instead of burning the crop residues after harvest, collect them for compost production, or work