Investigations on sett-borne fungi of sugarcane
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Date
2006
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Publisher
CCSHAU
Abstract
The primary objective of this investigation was to study the
management of diseases caused by sett-borne fungi. Ten fungi viz.
Collectrichum falcatum, Fusarium moniliforme, Cephalosporium
sacchari, Rhizoctonia solani, Ceratocystis paradoxa, Aspergillus spp.
Mucor spp. Penicillium spp., Curvularia spp. and Alternaria spp.,
were isolated from the setts of different varieties collected from
different locations in Haryana. Only five fungi viz., Collectrichum
falcatum, Fusarium moniliforme, Cephalosporium sacchari,
Rhizoctonia solani and Ceratocystis paradoxa were found pathogenic
as they cause sett rotting in vitro. In vitro studies revealed that
carbendazim 50%WP (100ppm) was most effective fungicide
against mycelial growth of all the test fungi viz. Collectrichum
falcatum, Fusarium moniliforme, Cephalosporium sacchari,
Rhizoctonia solani, Ceratocystis paradoxa. The extract of aonla
leaves 20% was found better in inhibiting mycelial growth of all the
five test pathogenic fungi than neem leaf extract (20%). Bioagent
Trichoderma viride also gives good inhibition of mycelial growth of
all the five pathogenic fungi.
Field studies revealed that different treatments viz. Moist Hot
Air Treatment (MHAT) + Carbendazim, MHAT + aonla leaf extract
and MHAT + Trichoderma viride were at par as they improve
germination, number of millable canes and cane yield of CoH 119 as
compared with inoculated setts.