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  Optimisation of Phosphorus Nutrition in Organic Vegetable Production quantity

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While the economic prospects for organic food and fibre products in Australian and overseas markets are promising, Australian organic growers face several production constraints. These constraints include the limiting effects of low soil available phosphorus (P) due to the use of insoluble or sparingly soluble P sources permitted in organic production. Most of the investigations in Australian broadacre (extensive arable) organic farming systems indicate a decline in soil available P over time.
Research on vegetable production in New South Wales has indicated a positive nutrient budget, including for P. However, this finding needs to be generalised to other locations in Australia and further investigation is needed to develop effective strategies for P management in low-input systems.
This RIRDC research is of direct relevance to organic farmers and other stakeholders in the organic industry such as certifiers and input producers.
RIRDC is a partnership between government and industry to invest in R&D for more productive and sustainable rural industries. We invest in new and emerging rural industries, a suite of established rural industries and national rural issues.
The research is of direct relevance to organic farmers and other stakeholders in the organic industry such as certifiers and input producers.