STUDY ON THE ENHANCEMENT OF GROWTH OF THE NITROGEN-FIXING BLUE-GREEN ALGAE BY ADDITION OF CUPRIC SULPHATE
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Abstract
Additions of 0.005-0.03ppm cupric ion enhanced the growth of the nitrogen-fixing blue-green algae in the culture medium.The optimum Cu++concentration for growth is 0.01 ppm for mixed culture of Anabaena species and monoculture of Anabaena azotica;for mono- culture of Anabaena variabslis,the optimum cuncentration is 0.03ppm.The optimum range of Cu++ concentration is widen for algae in tanks with soil substrates than for algae in tanks without substrates.
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