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The Composted Soil Conditioner Nutrient Contribution Calculator has been developed by the Recycled Organics Unit via literature review and direct consultation with field researchers to provide an initial estimate of the N, P and K nutrient loading or nutrient contribution from the use of composted soil conditioner (digging compost) relative to a grower's normal fertiliser practices.
Note that estimated nutrient contribution from compost in these calculators is based on review of literature and direct consultation with field researchers in Australia. The available data is acknowledged to be inadequate for accurate calculation. The rate of nutrient release from composts will vary due to climate, soils and management practices, and characteristics of the compost such as maturity. It is not suggested that the figures calculated here will be accurate for any specific property or compost product, but figures provide a reasonable estimate for initiating use of compost. Compost and soil testing and/or leaf analysis should continue be used to better inform site specific performance and to inform preferred application rates of of compost and complimentary fertiliser. Please refer to notes in the "Explanation" worksheet of this Excel file . NOTE: To save the file directly to your computer, right click on the link below and select "Save target as", then save the file to your computer. You will need MS Excel version 2000 or later to access this file. The nutrient contribution calculators are complimented by numerous associated reports including the following: |
