Nosmo King
Member
Habeeb I commend you for your interest and research here is a little more reading material for you.
http://soils.usda.gov/sqi/assessment/files/soil_enzymes_sq_biological_indicator_sheet.pdf
http://www.springerreference.com/docs/html/chapterdbid/330165.html
http://www.ncbi.nlm.nih.gov/pubmed/21174994
http://www.sciencedirect.com/science/article/pii/S0098847203000637
http://soils.usda.gov/sqi/assessment/files/soil_enzymes_sq_biological_indicator_sheet.pdf
http://www.springerreference.com/docs/html/chapterdbid/330165.html
http://www.ncbi.nlm.nih.gov/pubmed/21174994
http://www.sciencedirect.com/science/article/pii/S0098847203000637