Incidence of Root Rot (Rhizoctonia solani Kuhn) of Fenugreek (Trigonella foenum-graecum L.) and its Management)
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Date
2022
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Agriculture University, Jodhpur
Abstract
Fenugreek (Trigonella foenum-graecum L.) belongs to the family Fabaceae,
locally known as “Methi”. It is widely utilized in the life of human beings. Fenugreek
is the third highest important seed spice in India after coriander and cumin. Sudden
wilting and drying of plants are the characteristic symptoms of root rot in fenugreek
caused by Rhizoctonia solani.
The highest per cent incidence of root rot was recorded from Tinwari tehsil
followed by Osian, Bilara and minimum from Bhopalgarh tehsil. Isolated and purified
culture was identified as Rhizoctonia solani. The seed-cum-soil inoculation technique
recorded highest disease incidence followed by soil inoculation while seed inoculation
recorded lowest disease incidence. Azoxystrobin 11% + tebuconazole 18.3% SC was
completely inhibited the mycelial growth of R. solani and also found significantly
superior over each fungicide followed by tebuconazole 50% + trifloxystrobin 25%
WG, pyraclostrobin 25% + fluxapyroxad 250g/l, thiophanate methyl 450g/l +
pyraclostrobin 50g/l. Maximum per cent inhibition of mycelial growth was observed
in Trichoderma viride followed by T. harzianum and Bacillus subtilis after 7 days of
incubation. Garlic clove extract was observed highly effective in inhibiting the
mycelial growth of R. solani followed by turmeric and ginger. Minimum mycelial
growth inhibition was observed in giloy extract.
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Sharma, Sunita 2022. Incidence of Root Rot (Rhizoctonia solani Kuhn) of Fenugreek (Trigonella foenum-graecum L.) and its Management). M.Sc. Thesis, Agriculture University, Jodhpur