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Pakistan Journal of Biological Sciences
Year: 2002  |  Volume: 5  |  Issue: 3  |  Page No.: 303 - 306

In vitro Inhibition of Conidial Germination of Colletotrichum gloeosporioides Penz. by Fungicides, Plant Extracts and Phytohoromones

Shahidul Alam, M. Sabina Banu, M. Forman Ali, Nargis Akhter, M. Rafiqul Islam and M. S. Alam    

Abstract: Six fungicides viz., cupravit, thiovit, dithane M-45, bavistin, rovral and suncozeb were tested against C. gloeosporioides. Dithane M-45, rovral, thiovit and suncozeb were the most effective ones. Cupravit and bavistin were less effective in the inhibition of conidial germination. Ten plant-extracts considered as fungicides were tested, out of which Tagetes erecta leaf and Azadirachta indica bark extracts were the most effective in inhibiting Colletotrichum gloeosporioides after 5-30 minutes of immersion and in 5:1.25 (w/v) concentration. The phytohormone IAA had great effect against the inhibition (100%) of C. gloeosporioides at 0.005 to 0.006% concentration for an immersion after 5-30 minutes. Rest of the hormones also had good effects against C. gloeosporioides.

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