The Biobrio 13(1 & 2), 2026

Impact of fungicide Mancozeb on the chlorophyll content of two bluegreen algae collected from Gogabil Lake of Katihar district

Prity Kumari & Indu Kumari

ABSTRACT:

Fungicides are used in agriculture system to control fungal pathogen. A part of fungicide runs off in water resources which became toxic to aquatic animals. Some blue-green algae are capable to absorb fungicides. In the present study, effect of a fungicide was tested on two blue-green algae, Oscillatoria tenuis and Anabaena circinalis. Lower concentration of fungicide enhances the growth of both algae. At a concentration of 30mg/l of fungicide, chlorophyll content of Oscillatoria tenuis and Anabaena circinalis increased by 7.327% and 3.563% respectively but in higher concentration growth decreased. In 100mg/l concentration of Mancozeb chlorophyll content in Oscillatoria tenuis was observed as 0.43μg/ml and in Anabaena 0.21μg/ml while in control chlorophyll content was observed as 16.65μg/ml in Oscillatoria and 13.47μg/ml in Anabaena.

Keywords:    

Fungicide, Mancozeb, Chlorophyll, Blue green algae, Gogabil Lake

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