# Bioeffector > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Bioeffector > Markdown URL: https://mediated.wiki/source/Bioeffector.md > Source: https://en.wikipedia.org/wiki/Bioeffector > Source revision: 1340183586 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) A '''bioeffector''' is a viable [microorganism](/source/microorganism) or active natural compound which directly or indirectly affects plant performance ([biofertilizer](/source/biofertilizer)), and thus has the potential to reduce [fertilizer](/source/fertilizer) and [pesticide](/source/pesticide) use in crop production.{{Cite web |url=http://dpg.phytomedizin.org/fileadmin/tagungen/03_PPPHE/Doku/2014/MinutesPPPHE2014.pdf |title=Minutes of the 6th International Symposium Plant Protection and Plant Health in Europe, May 2014 Braunschweig, Germany |access-date=2014-10-03 |archive-date=2021-04-26 |archive-url=https://web.archive.org/web/20210426193321/http://dpg.phytomedizin.org/fileadmin/tagungen/03_PPPHE/Doku/2014/MinutesPPPHE2014.pdf |url-status=dead }} == Types == Bioeffectors directly or indirectly affect plant performance by influencing the functional implementation or activation of biological mechanisms, particularly those interfering with soil-plant-microbe interactions.V. Römheld, G. Neumann (2006): ''The Rhizosphere: Contributions of the soil-root interface to sustainable soil systems''. In: N. Uphoff, N., N. A. S. Ball et al. (Hg.), ''Biological Approaches to Sustainable Soil Systems'', S. 92–107, CRC-Press, Oxford, UK. In contrast to conventional fertilizers and pesticides, the effectiveness of bioeffectors is not based on a substantial direct input of mineral plant nutrients, either in inorganic or organic forms. *Products in use are: ** Microbial residues, ** Composting and fermentation products, ** Plant and algae extracts *Bioeffector-preparations (''bio-agents'') as ready-formulated products are applied: ** to stimulate plant growth (bio-stimulants), ** to improve plant nutrient acquisition (bio-fertilizers), ** to protect plants from [pathogens](/source/pathogens) and [pests](/source/Pest_(organism)) ([bio-control agents](/source/Biological_pest_control)) ** or generally to advance cropping efficiency; they can contain one or more bio-effectors along with other substances”Bakonyi N., Donath S., Weinmann M., Neumann G., [Müller T.](/source/Torsten_M%C3%BCller_(agroscientist)), [Römheld V.](/source/Volker_Roemheld) (2008): Assessing commercial bio-fertilisers for improved phosphorus availability. Use of rapid screening tests. Jahrestagung der Deutschen Gesellschaft für Pflanzenernährung 2008 *Well-established bioeffectors with documented positive results at the field level are: ** [Rhizobia](/source/Rhizobia) strains for soil or seed inoculation as a prerequisite for symbiotic N2-fixation when establishing new legume species or varieties. ** positive effects of [mycorrhiza](/source/mycorrhiza) inoculation for soils with a (temporarily) low potential for natural root mycorrhization. ** sufficient mycorrhization enhances nutrient (P) and water uptake and increases resistance to pathogenic fungi. *Further mechanisms for the positive impact of bioeffectors on plant growth have postulated, promising a high potential for resource preservation due to reduction of fertiliser and pesticide use: ** Active nutrient mobilisation by exudation of acids and carboxylates (e.g. P-mobilisation), ** exudation of micro-nutrient mobilising siderophores/chelates (e.g. Fe3+), ** reduction of trace elements from less soluble oxidised to highly soluble reduced forms (e.g., Fe3+ to Fe2+, Mn4+ to Mn2+), ** associative/non-symbiotic N2-fixation, protective antagonism to plant pathogens, ** enhancement of mycorrhizal infection and growth, and stimulating hormonal effects. == Research and Public Dissemination == Under the Acronym ''Biofector'' the European Union supported the Research of Bioeffectors under the leadership of the [University of Hohenheim](/source/University_of_Hohenheim). Coordinator [Guenter Neumann](/source/Guenter_Neumann_(agricultural_scientist)), Projectmembers: [Jiří Balík](/source/Ji%C5%99%C3%AD_Bal%C3%ADk), [Borbala Biro](/source/Borbala_Biro), [Karl Fritz Lauer](/source/Karl_Fritz_Lauer), [Uwe Ludewig](/source/Uwe_Ludewig), [Torsten Müller](/source/Torsten_M%C3%BCller_(agroscientist)), [Alessandro Piccolo](/source/Alessandro_Piccolo_(agricultural_scientist)), [Manfred G. Raupp](/source/Manfred_G._Raupp), [Kornelia Smalla](/source/Kornelia_Smalla), [Pavel Tlustoš](/source/Pavel_Tlusto%C5%A1), [Markus Weinmann](/source/Markus_Weinmann). The results of the project are summarized in the project final report.{{Cite web |last=Neumann |first=Günter |date=27 February 2018 |title=Project Final Report. Resource Preservation by Application of BIOefFECTORs in European Crop Production |url=https://cordis.europa.eu/docs/results/312/312117/final1-biofector-finalreport-final-20171109.pdf |website=CORDIS - EU research results. European Commission}} Other Biostimulants Organisations are [European Biostimulant Industry Council](/source/European_Biostimulant_Industry_Council), [International Biocontrol Manufacturers' Association](/source/International_Biocontrol_Manufacturers'_Association) and [Annual Biocontrol Industry Meeting](/source/Annual_Biocontrol_Industry_Meeting). == External links == * [http://www.biofector.info Webpage Biofector] * [http://www.biofector-database.eu/en/biofectors-homepage.html Biofector Database] {{Webarchive|url=https://web.archive.org/web/20181030035401/https://www.biofector-database.eu/en/biofectors-homepage.html |date=2018-10-30 }} * [http://www.biostimulants.info/ Webpage Association Biostimulants in Agriculture] {{Webarchive|url=https://web.archive.org/web/20180604201202/http://biostimulants.info/ |date=2018-06-04 }} * [http://biofector.af.czu.cz Webpage Biofector CULS Prague] {{Webarchive|url=https://web.archive.org/web/20210426193324/http://biofector.af.czu.cz/ |date=2021-04-26 }} * [http://www.raupp.biz Webpage Madora Bioeffectors] * [https://www.uni-hohenheim.de/1597.html?typo3state=projects&lsfid=1672 Webpage Biofector University of Hohenheim] == References == {{reflist}} {{DEFAULTSORT:Bioeffector}} Category:Agroecology Category:Agronomy Category:Botany . Category:Biology and pharmacology of chemical elements . Category:Crop protection chemicals Category:Ecology Category:Ecological economics Category:Edaphology Category:Fertilizers Category:Organic fertilizers Category:Organic food Category:Recycling Category:Soil Category:Soil fertility Category:Soil improvers Category:Sustainable agriculture Category:Sustainable gardening Category:Sustainable technologies Category:Systems ecology Category:Waste management --- Adapted from the Wikipedia article [Bioeffector](https://en.wikipedia.org/wiki/Bioeffector) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Bioeffector?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.