Cobalt in SoilNaturally less than 50ppm concentration

Must be Supplemented

http://minerals.cr.usgs.gov/projects/geochemical_landscapes/images/fig4.jpg

http://www.macroind.com/uploadfile/images/1192974570062.jpg

Cobalt Sulphate

http://textbookofbacteriology.net/Rhizobium.combo.jpg

Rhizobia

Vitamin B12 in Plants

Thicker stems Taller plantsMore pods

http://www.rhs.org.uk/plants/images/trials/SweetPeaTying.jpg

Necessary ChemicalsNitrogen-N

Phosphorus-PPotassium-K

Known as NPK

http://acswebapplications.acs.org/PortalTools/Shopper/

Nitrogen Cycle

Literature Review

Miller and Tarrant (1983)

http://www.fs.fed.us/pnw/pubs/journals/pnw_1983_miller001.pdf

Gad (2006)

(Kandil, 2007)

http://www.mitoresearch.org/images/q64bigmito.jpg

PurposeEffects of Cobalt and Vitamin B12 fertilization on

the growth of Pisum sativum L.

http://plants.usda.gov/java/profile?symbol=PISA6

HypothesisAlternate Hypothesis-H(a)- Both Cobalt and the

Vitamin B12 fertilization have significant effects on the growth of the pea plants with the presence of

Rhizobium Leguminosarum, and supports the work of Gad and Kandil

Null Hypothesis-H(o)- Neither the cobalt or the Vitamin B12 have an effect on the growth of the peas with or without the presence of Rhizobium

Leguminosarum

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(Abstract)

Reacts with bacteria in pea plant roots and stimulates

growth.

Bacteria live in a mutual relationship with plants

NPK levels can determine plant overall health