scholarly journals Evaluation of Antagonistic Potential of Bacillus spp. and Trichoderma spp. against Sclerotium rolfsii Sacc. causing Collar Rot Disease in Solanum melongena L.

2020 ◽  
Vol 9 (12) ◽  
pp. 694-703
Author(s):  
A. Abinaya ◽  
K. Kalpana ◽  
E.G. Ebenezar ◽  
S. Thiruvudainambi ◽  
M. Theradimani ◽  
...  
Keyword(s):  
Sclerotium Rolfsii ◽  
Solanum Melongena ◽  
Trichoderma Spp ◽  
Collar Rot ◽  
Bacillus Spp ◽  
Antagonistic Potential ◽  
Rot Disease

Management of collar rot disease in chickpea by Trichoderma species

2020 ◽  
Vol 7 (03) ◽  
Author(s):  
PREM PANDEY ◽  
G. C. SAGAR ◽  
SUNDARMAN SHRESTHA2 ◽  
HIRAKAJI MANANDHAR ◽  
RITESH K. YADAV ◽  
...  
Keyword(s):  
Growth Inhibition ◽  
Mycelial Growth ◽  
Sclerotium Rolfsii ◽  
Maximum Growth ◽  
Pot Experiment ◽  
Trichoderma Spp ◽  
Trichoderma Species ◽  
Collar Rot ◽  
Rot Disease

Nine isolates of Trichoderma spp. were isolated from different agro- ecological regions of Nepal viz; Jumla, Palpa, Chitwan, Tarahara, Banke, Illam and Salyan and screened against Sclerotium rolfsii Sacc. Adreded soil borne phytopathogen causing collar rot of chickpea in chickpea; In-vitro efficacy of nine fungal antagonist (Trichoderma spp.) against Sclerotium rolfsii were screened. Pot experiment was done to find out the effective management of S. rolfsi through Tricoderma using different methods i.e. Seed treatment, soil drenching and soil application. All the tested isolates of Trichoderma spp. were found effective on mycelial growth inhibition and sclerotial parasitization of S. rolfsii. Trichoderma isolated from Palpa district showed maximum growth inhibition (%) of pathogen periodically after 48(93.78%), 72(96.00%), 96(97.96%) and 120(100.00%) hours of inoculation. Parasitized sclerotium showed minimum sclerotial germination on agar plates. Moreover, Trichoderma species isolated from Palpa districts showed second best percent mycelial growth inhibition periodically at 72(25.00%), 120(29.16%), 168(29.16%) and 216(29.16%).In pot experiment at 40 days after sowing, Seedling height was maximum in soil drenching with 30g per 100ml of water (22.27cm) and Mortality percentage of seedlings was least or highest disease control was observed in seed treated with 109cfu/ml (0.000%).

scholarly journals Assessment of postharvest soil fungal population with special reference to Trichoderma in eggplants

2021 ◽  
Vol 32 (1) ◽  
pp. 31-42
Author(s):  
A Shirin ◽  
- Md Hossain ◽  
MH Ar Rashid ◽  
MB Meah
Keyword(s):  
Fusarium Oxysporum ◽  
Fusarium Wilt ◽  
Disease Incidence ◽  
Research Work ◽  
Sclerotium Rolfsii ◽  
Population Increase ◽  
Fungal Population ◽  
Collar Rot ◽  
Fruiting Stage ◽  
Antagonistic Potential

The research work was done to assess the postharvest soil fungal population and to find out the relation between population dynamics of Trichoderma and soil borne disease of 41 eggplant cultivars. Soil samples collected from IPM lab germplasm maintenance field at post-harvest stage were analyzed for microbes in dilution plate technique. Fungal colonies appeared in each plate were counted and made their average. Incidence and severity of Fusarium wilt and Sclerotium collar rot in the plot of 41 eggplant varieties were recorded at flowering-fruiting stage. The highest total soil fungal population was estimated from the plot soil of eggplant var. Singnath S (IPM- 42) that was 40.75×104. The var. Bijoy had the lowest fungal population that was 7.5×104. A comparison between Trichoderma population and other fungal population was made. Different eggplant cultivars had variation in the population of two important soil fungi- Trichoderma and Fusarium. The total populations of Trichoderma and Fusarium in the plot soil of 41 eggplant varieties were 129.75 and 348.75 × 104 per gram of soil, respectively. The average number of colonies of Trichoderma varied with the range (1-8.25) per plate. Fusarium varied with the range from (2-22.50). In 20 important eggplant varieties out of 41, both Fusarium wilt and Sclerotium collar rot incidence ranged between 0.00 to 40.00%. The variety Puta begun had the highest incidence of Fusarium wilt with the highest soil population of Fusarium oxysporum against the absence of Trichoderma harzianum. The disease incidence at flowering-fruiting stage was negatively correlated with the population of Trichoderma. Disease severity decreased with the increase in Trichoderma population. Increase of Trichoderma population, decreased the population of other fungi (Fusarium oxysporum and Sclerotium rolfsii). These results are clearly indicating that Trichoderma might have the antagonistic potential and might contribute to the reduction of incidence of soil-borne diseases. Progressive Agriculture 32 (1): 31-42, 2021

scholarly journals Use of Trichoderma in Biological Control of Collar Rot of Soybean and Chickpea

2020 ◽  
pp. 25-31
Author(s):  
Mahbuba Kaniz Hasna ◽  
Md. Abul Kashem ◽  
Farid Ahmed
Keyword(s):  
Seed Treatment ◽  
Field Experiments ◽  
Disease Incidence ◽  
Sclerotium Rolfsii ◽  
Antagonistic Activity ◽  
Root Weight ◽  
Dual Culture ◽  
Collar Rot ◽  
Rot Disease

An in vitro and field experiments for two consecutive years were conducted at Bangladesh Institute of Nuclear Agriculture, Mymensingh, aiming to investigate the efficacy of Trichoderma harzianum against Sclerotium rolfsii causing collar rot disease of soybean and chickpea. In in vitro the antagonistic activity of T. harzianum against S. rolfsii was observed through dual culture. In field experiment Trichoderma was applied as soil treatment and seed treatment. The percent inhibition of S. rolfsii induced by T. harzianum was found upto 78.9% in in vitro. The maximum reduction of collar rot disease incidence over control was 82.4% in soybean and 77.6% in chickpea which was recorded in the plot where T. harzianum was applied in the soil. The highest seed germination: 86.3% in soybean and 84.8% in chickpea, maximum fresh shoot weight: 94.5 g plant-1 in soybean, 62.5 g plant-1 in chickpea, maximum fresh root weight: 10.7 g plant-1 in soybean, 9.3 g plant-1 in chickpea and the highest yield: 2830 kg ha-1 in soybean, 1836 kg ha-1 in chickpea were obtained by the application of Trichoderma in soil. The study indicated that the tested isolate of T. harzianum had potential in controlling collar rot disease of soybean and chickpea. For the reduction of collar rot incidence application of T. harzianum in soil was found more effective than seed treatment. 

Antagonistic potential of bacterial endophytes and induction of systemic resistance against collar rot pathogen Sclerotium rolfsii in tomato

2019 ◽  
Vol 137 ◽  
pp. 104014 ◽  
Author(s):  
Pramod Kumar Sahu ◽  
Shailendra Singh ◽  
Amrita Gupta ◽  
Udai B. Singh ◽  
G.P. Brahmaprakash ◽  
...  
Keyword(s):  
Sclerotium Rolfsii ◽  
Systemic Resistance ◽  
Bacterial Endophytes ◽  
Collar Rot ◽  
Antagonistic Potential
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