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Efficacy of Trichoderma asperellum against different pathogens of selected medicinal plants

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Title Efficacy of Trichoderma asperellum against different pathogens of selected medicinal plants
 
Creator Rai, D
Singh, N
 
Subject Ashwagandha
Biocontrol
Bioagents
Ocimum basilicum
Leaf spot disease of Tulsi
Mint
Mentha arvensis
Rauwolfia serpentine
Sarpgandha
Withania sominifera
 
Description 303-310
Trichoderma asperellum is one of the plant growth-promoting fungi (PGPF) presently marketed as biopesticide,
biofertilizer and in soil amendments, due to its ability to protect plants, enhance vegetative growth and reduce pathogen
populations. Keeping this in the view, here, we assessed its efficacy against pathogens of medicinal plants in vitro and in
field conditions against the Leaf spot disease of Green leaf Tulsi (Ocimum basilicum). We selected 10 different plant
pathogens of medicinal plants, namely Ashwagandha (Withania sominifera) pathogens (Alternaria alternata and Fusarium
solani); Sarpgandha (Rauwolfia serpentina) pathogens (Colletotrichum sp. and Alternaria alternata); Tulsi (Ocimum
basilicum) pathogens (Colletotrichum gloeosporioides and Alternaria alternata); Mint (Mentha arvensis) pathogens
(Curvularia sp. and Alternaria alternata); and Mandukparni (Centella asiatica) pathogens (Cochliobolus sp. and Alternaria
sp.) for evaluation by Dual culture plate method. After 144 h, maximum inhibition (56.36%) was recorded against F. solani.
This was followed by inhibition of Cochliobolus sp. where the reduction was 55.38%. T. asperellum was also found to be
effective against Alternaria sp. isolated from Ashwagandha (53.06%), Alternaria sp. from Sarpagandha (53.51%), and
Curvularia sp. (52.12%). In field study, FYM enriched with T. asperellum, Pseudomonas fluorescence, neem oil and
fungicide were tested against Leaf spot of Tulsi caused by Alternaria alternata. The treatment T5 [soil application of FYM
(1.0 kg/m2) enriched with T. asperellum + P. fluorescence talc based formulation each @ 2.0% at planting time+ 3 sprays of
copper oxychlorde @ 0.3% with 15 days interval on the onset of disease symptoms] was found effective with per cent
disease index recorded 10.37%. This was followed by treatment T6 [soil application of FYM (1.0 kg/m2) enriched with
T. asperellum + P. fluorescence talc based formulation each @ 2.0% at planting time + 3 sprays of with bordeaux mixture @ 0.5%
onset of disease symptoms], and both the treatments were at par with each other. Maximum biomass of tulsi (3.97 g) observed in
treatment T5. The result implies that FYM enriched with T. asperellum and P. fluorescence which was found to be most
effective can be incorporated in IDM programs for ecofriendly leaf spot disease management of Green leaf Tulsi.
 
Date 2023-04-03T09:17:45Z
2023-04-03T09:17:45Z
2023-04
 
Type Article
 
Identifier 0975-1009 (Online); 0019-5189 (Print)
http://nopr.niscpr.res.in/handle/123456789/61640
https://doi.org/10.56042/ijeb.v61i04.172
 
Language en
 
Source IJEB Vol.61(04) [Apr 2023]