The recycling of plant nutrients in agriculture through the use of organic manures, biosolids and other organic wastes is discussed with special reference to phosphorus (P) and its efficient use in crop production.
The benefits and limitations of different approaches to recycling are developed from a historical overview to the present day to show that waste disposal can be replaced by the effective and efficient use of wastes as part of recycling nutrients.
Paper presented to The International Fertiliser Society at a Conference in Cambridge, UK on 10th December 2008
A E Johnston, Lawes Trust Senior Fellow, Soil Science Department, Rothamsted Research.
Proceedings 630 https://fertiliser-society.org/store/resource-or-waste-the-reality-of-nutrient-recycling-to-land/