Editing Kudzu (section)

===Soil improvement and preservation===
Kudzu has been used as a form of [[erosion control]] and to enhance the soil. As a [[legume]], it increases the [[nitrogen]] in the soil by a symbiotic relationship with [[Nitrogen fixation|nitrogen-fixing]] [[bacteria]].<ref name="appalachia">{{cite web|url=http://www.a-spi.org/tp/tp55.htm|title=Kudzu in Appalachia|access-date=20 August 2007|publisher=Appalachia -- Science in the Public Interest|year=2000|author=Amanda Allen|work=ASPI Technical Series TP 55|url-status=dead|archive-url=https://web.archive.org/web/20070928071603/http://www.a-spi.org/tp/tp55.htm|archive-date=28 September 2007}}</ref> Its deep taproots also transfer valuable minerals from the [[subsoil]] to the topsoil, thereby improving the topsoil. In the deforested section of the central [[Amazon Basin]] in [[Brazil]], it has been used for improving the soil pore-space in clay [[latosol]]s, thus freeing even more water for plants than in the soil prior to deforestation.<ref name="brazil">{{cite journal|title=Changes in soil pore-space distribution following deforestation and revegetation: An example from the Central Amazon Basin, Brazil |year=1991|author1=Chauvel, A |author2=Grimaldi, M |author3=Tessier, D |journal=Forest Ecology and Management |doi=10.1016/0378-1127(91)90147-N |volume=38 |issue=3–4 |pages=259–271|bibcode=1991ForEM..38..259C |url=http://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers16-03/38584.pdf }}</ref>