In vitro evaluation of bio control agents against Alternaria alternata causing leaf blight disease of Adhatoda zeylanica Medic

2015 ◽  
Vol 3 (6) ◽  
pp. 126-129
Author(s):  
Manisha Sutare ◽  
Keyword(s):  
Alternaria Alternata ◽  
Leaf Blight ◽  
In Vitro Evaluation ◽  
Blight Disease

scholarly journals Prevalence and Severity of Leaf Blight Disease of Chrysanthemum in Southern regions of Karnataka and in-vitro Fungicidal Effect on Alternaria alternata

2015 ◽  
Vol 9 (3) ◽  
pp. 38-45 ◽  
Author(s):  
G. Shamala ◽  
G. R. Janardhana
Keyword(s):  
Alternaria Alternata ◽  
Disease Incidence ◽  
Life Sciences ◽  
Leaf Blight ◽  
Cut Flowers ◽  
In Vitro Evaluation ◽  
Karnataka State ◽  
Commercially Important ◽  
Blight Disease

Chrysanthemum is one of the commercially important flower crop with great potential both as loose and cut flowers in Karnataka state. In the present study, prevalence and incidence of leaf blight disease was studied in six major growing districts of South Karnataka during 2012 - 2013. The pathogen associated with leaf blight disease was isolated and identified as Alternaria alternata. The study revealed that, the disease was distributed in Southern districts of Karnataka wherever Chrysanthemum is grown. The varieties Chandini and Karnel were more susceptible to blight showing highest disease incidence (100%) and severity (100%) recorded from Mandya and Mysore regions. The lowest disease incidence, severity and PDI of 18.40%, 38.68% and 24.89% were recorded on Rajawhite variety in Bangalore region. During 2013, the highest disease incidence, severity and PDI with 100%, 98.47%, and 45.71% were recorded in Mysore district on Chandini variety. In vitro evaluation of four fungicides on Alternaria alternata revealed that Carbendazim+Mancozeb was most effective with 95.65% inhibition followed by Carbendazim, Mancozeb and Metalaxyl+Mancozeb with 68.26%, 91.30% and 91.30% inhibition of the mycelium at 2.0% concentration.DOI: http://dx.doi.org/10.3126/ijls.v9i3.12465   International Journal of Life Sciences 9 (3): 2015; 38-45

Thymol and its Derivatives for Management of Phytopathogenic fungi of maize

2021 ◽  
Vol 18 ◽  
Author(s):  
Jyoti Gaba ◽  
Sunita Sharma ◽  
Harleen Kaur ◽  
Pardeep Kaur
Keyword(s):  
Pathogenic Fungi ◽  
Bioactive Compound ◽  
Mannich Bases ◽  
Phytopathogenic Fungi ◽  
Leaf Blight ◽  
Significant Control ◽  
Thymol Derivatives ◽  
Potential Alternative ◽  
Blight Disease

Background: Thymol is a bioactive compound having many pharmacological activities. Objective: The present study was carried out to evaluate the fungi toxic effects of thymol and derivatives against phytopathogenic fungi of maize. Method: Thymol was derivatized to get formylated thymol, Mannich bases, and imine derivatives. All the synthesized thymol derivatives were characterized by their physical and spectral properties. Synthesized thymol derivatives were screened for their in vitro antifungal effects using poisoned food technique against three maize pathogenic fungi namely Fusarium moniliforme, Rhizoctonia solani and Dreschlera maydis. Results: Thymol and formylated thymol showed promising results for control of D. maydis with ED50 values less than standard carbendazim and comparable to standard mancozeb. These two compounds were further evaluated for control of D. maydis causative maydis leaf blight disease on maize plants grown in the field during the Kharif season (June to October) 2018. Conclusion: Thymol exhibited significant control of maydis leaf blight disease of maize and emerged as a potential alternative to synthetic fungicides used in cereal crops.

scholarly journals In vitro Evaluation of Fungicides, Botanicles and Bio-Agents against Alternaria alternata Causal Agent of Fruit Rot of Brinjal

2017 ◽  
Vol 6 (5) ◽  
pp. 495-504 ◽  
Author(s):  
Sanjeev P. Jakatimath ◽  
R.K. Mesta ◽  
I.B. Biradar ◽  
Sadanand K. Mushrif ◽  
P.S. Ajjappalavar
Keyword(s):  
Alternaria Alternata ◽  
Causal Agent ◽  
Fruit Rot ◽  
In Vitro Evaluation
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