Shigemi TACHIKAWA’s scientific contributions

... Several studies have pointed out that soil fertility levels of tropical homegardens are sustained through efficient organic matter and nutrient cycling between diverse plants and soils and their recycling through daily input of waste such as garbage ash and manure (Torquebiau 1992;Nair 2001;Kumar and Nair 2004). However, many previous studies have reported on Ultisols, Oxisols, or other soil classes with a somewhat clayey texture (Jensen 1993a(Jensen , 1993bFunakawa et al. 2007;Pandey et al. 2007;Lattirasuvan et al. 2010;Tanaka et al. 2010Tanaka et al. , 2012. As for sandy soils used for homegardens, the high fertility of the Terra Preta in the Amazonian Basin is well known (Glaser et al. 2000;Lehmann et al. 2003). ...

Reference:

Soil morphological and chemical properties in homegardens on sandy beach ridges along the east coast of Peninsular Malaysia