Phosphate fertilizer
Phosphate fertilizers are fertilizers that provide the plants with the main nutrient element, phosphate . The use of phosphate fertilizers is regulated in the Fertilizer Ordinance. A pioneer in the development of phosphate fertilizers is the chemist Justus von Liebig (1803–1873) who developed a water-soluble superphosphate in the 1840s .
Importance of phosphate for plants
Plants take up phosphate through their roots. If there is a phosphate deficiency, z. B. the leaves smaller. If there is a lack of phosphate in a plant, the root does not grow any further.
production
In 2005, 17.5 million tons of phosphorus were mined worldwide, of which 14 million tons were used for fertilizer production.
In addition to degradation, phosphate can also be recycled from sewage sludge. Phosphate occurs particularly in urine.
Individual evidence
- ↑ Wolf-Rüdiger Scheible: Regulation of the plant phosphate balance. In: Research Report 2009 - Max Planck Institute for Molecular Plant Physiology. Retrieved March 1, 2016 .
- ↑ Iron resistance in the subsoil: If there is a lack of phosphate, iron slows down the deep growth of roots. May 18, 2015, accessed March 1, 2016 .
- ↑ Roland Knauer: Phosphorus lets plants sprout - but the material is running out. Der Tagesspiegel , October 27, 2011, accessed on March 1, 2016 .
- ↑ Claudia Georgi: Fertilizer from the sewage treatment plant. Der Tagesspiegel , February 17, 2016, accessed on March 1, 2016 .
- ↑ Juliette Irmer: Urine - the fertilizer of the future? November 15, 2014, accessed March 1, 2016 .