References:
We'd like give a big thanks to these resource for helping us get the correct info for our investigation!
http://www.drweil.com/drw/u/ART03057/How-to-Make-Healthy-Soil.html
http://www.teara.govt.nz/en/soils/page-9
http://www.gardenstew.com/blog/e3-11-soil-basics---creating-fertile-healthy-soil.html
http://www.agweb.com/mobile/newsdetail.aspx?ArticleId=329014
http://www.mfe.govt.nz/publications/
http://www.nrc.govt.nz/Environment/Land/Information-and-issues/Soil-erosion/
http://www.quantumlabs.co.nz/index.htm
http://www.hill-laboratories.com/page/pageid/2145845345
http://www.soil.ncsu.edu/programs/nmp/Nutrient%20Management%20for%20CCA.pdf
http://www.teara.govt.nz/en/soils/page-9
http://www.gardenstew.com/blog/e3-11-soil-basics---creating-fertile-healthy-soil.html
http://www.agweb.com/mobile/newsdetail.aspx?ArticleId=329014
http://www.mfe.govt.nz/publications/
http://www.nrc.govt.nz/Environment/Land/Information-and-issues/Soil-erosion/
http://www.quantumlabs.co.nz/index.htm
http://www.hill-laboratories.com/page/pageid/2145845345
http://www.soil.ncsu.edu/programs/nmp/Nutrient%20Management%20for%20CCA.pdf