Role of some macro and microelements on the nitrogen fixation by the blue-green alga Calothrix sp.
D002122:Calcium Chloride / Q000494:pharmacology*; D003470:Culture Media; D000458:Cyanobacteria / Q000378:metabolism*; D005069:Evaluation Studies as Topic; D008278:Magnesium Sulfate / Q000494:pharmacology*; D009586:Nitrogen Fixation / Q000187:drug effects*; D010710:Phosphates / Q000494:pharmacology*; D011188:Potassium / Q000494:pharmacology*
D003470:Culture Media; D010710:Phosphates; D008278:Magnesium Sulfate; D002122:Calcium Chloride; D011188:Potassium