The Composted Mulch Nutrient Contribution Calculator for Vineyards and Orchards has been developed by the Recycled Organics Unit via international literature review to calculate the concentration of N, P and K and total nutrient loading in composted mulch to match growers’ fertiliser practices.

The calculator is an MS Excel 2000 spreadsheet. Instructions for using the spreadsheet are included in the file. Download the Mulch Nutrient Calculator

Note that estimated nutrient contribution from compost is based on comprehensive review of international literature. The rate of nutrient release from compost is likely to vary due to climate, soils and management practices. It is not suggested that the figures calculated will necessarily be accurate for any specific property, but figures provided are the best estimate on basis of current field research data. Soil testing and/or leaf analysis should continue be used to better inform site specific performance and inform application of mineral fertilisers.

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 Composted Mulch Nutrient Contribution Calculator for Vineyards and Orchards is complimented by the following reports:

• Recycled Organics Products in Intensive Agriculture

• Product Specifications and Application Guidelines for Composted Mulches for Grape Production in NSW

• Product Specifications and Application Guidelines for Composted Mulches for Orchard Production in NSW

• Guide to Researching Agricultural Markets for Recycled Organics Products