Use other leguminous plants that
Chemically analyze seeds
Determine the effects on the
nutritional value of plants
Different concentrations of solution
could be used
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The data demonstrates that cobalt sulfate and vitamin B12 were both
significantly more effective than water.
The presence of rhizobium did not affect plant growth.
The data also demonstrates that water significantly raised germination
rates for the plants.
This supports the work of Gad and Kandil.
Vitamin B12 had an outlier in each trial
Human error when measuring and planting seeds
Germination rates affected the overall mean growth
Cobalt Sulfate was just as effective as Vitamin B12 in stimulating plant
Both Cobalt Sulfate and Vitamin B12 lowered germination rates for the
Cobalt Sulfate is unhealthy for the microorganisms that live in the soil.
The data supports the alternate hypothesis.