scholarly journals IN VITRO EVALUATION OF ESSENTIAL OILS AGAINST RHIZOCTONIA SOLANI (KUHN) THE CAUSAL OF SEEDLING DAMPING OFF DISEASE.

2019 ◽  
Vol 7 (3) ◽  
pp. 1395-1399
Author(s):  
ElWakilD A ◽  
Keyword(s):  
Essential Oils ◽  
Rhizoctonia Solani ◽  
Damping Off ◽  
In Vitro Evaluation

scholarly journals Sensitivity of Rhizoctonia solani AG-2-2 from Sugar Beet to Fungicides

Plant Disease ◽  
2016 ◽  
Vol 100 (12) ◽  
pp. 2427-2433 ◽  
Author(s):  
Sahar Arabiat ◽  
Mohamed F. R. Khan
Keyword(s):  
Sugar Beet ◽  
Rhizoctonia Solani ◽  
Root Rot ◽  
The United States ◽  
Damping Off ◽  
Growth Assay ◽  
The Mean ◽  
Crown And Root Rot ◽  
Mean Concentration

Rhizoctonia damping-off and crown and root rot caused by Rhizoctonia solani are major diseases of sugar beet (Beta vulgaris L.) worldwide, and growers in the United States rely on fungicides for disease management. Sensitivity of R. solani to fungicides was evaluated in vitro using a mycelial radial growth assay and by evaluating disease severity on R. solani AG 2-2 inoculated plants treated with fungicides in the greenhouse. The mean concentration that caused 50% mycelial growth inhibition (EC50) values for baseline isolates (collected before the fungicides were registered for sugar beet) were 49.7, 97.1, 0.3, 0.2, and 0.9 μg ml−1 and for nonbaseline isolates (collected after registration and use of fungicides) were 296.1, 341.7, 0.9, 0.2, and 0.6 μg ml−1 for azoxystrobin, trifloxystrobin, pyraclostrobin, penthiopyrad, and prothioconazole, respectively. The mean EC50 values of azoxystrobin, trifloxystrobin, and pyraclostrobin significantly increased in the nonbaseline isolates compared with baseline isolates, with a resistant factor of 6.0, 3.5, and 3.0, respectively. Frequency of isolates with EC50 values >10 μg ml−1 for azoxystrobin and trifloxystrobin increased from 25% in baseline isolates to 80% in nonbaseline isolates. Although sensitivity of nonbaseline isolates of R. solani to quinone outside inhibitors decreased, these fungicides at labeled rates were still effective at controlling the pathogen under greenhouse conditions.

scholarly journals Chemical Composition and in-Vitro Evaluation of the Antimicrobial and Antioxidant Activities of Essential Oils Extracted from Seven Eucalyptus Species

Molecules ◽  
2015 ◽  
Vol 20 (11) ◽  
pp. 20487-20498 ◽  
Author(s):  
Abdul Ghaffar ◽  
Muhammad Yameen ◽  
Shumaila Kiran ◽  
Shagufta Kamal ◽  
Fatima Jalal ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Activities ◽  
Eucalyptus Species ◽  
In Vitro Evaluation

scholarly journals In vitro evaluation of eight plant essential oils for controlling Colletotrichum, Botryosphaeria, Fusarium and Phytophthora fruit rots of avocado, mango and papaya

2018 ◽  
Vol 54 (No. 3) ◽  
pp. 153-162 ◽  
Author(s):  
Sarkhosh Ali ◽  
Schaffer Bruce ◽  
Vargas Ana I ◽  
Palmateer Aaron J ◽  
Lopez Patricia ◽  
...  
Keyword(s):  
Essential Oils ◽  
Plant Species ◽  
Major Constituent ◽  
Mycelium Growth ◽  
In Vitro Evaluation ◽  
Tea Tree ◽  
Plant Essential Oils ◽  
Thyme Oil ◽  
Application Rates

In vitro efficacy of the essential oils extracted from eight plant species was tested at application rates of 100, 250, 500, 1000, or 2000 µl/l for controlling fruit rots. Results showed a 100% reduction of mycelium growth of Colletotrichum, Fusarium, Phytophthora, Botryosphaeria after applying thyme or savory oils at all concentrations tested. Mint and cinnamon oils inhibited mycelium growth of the five isolates at application rates of either 1000 or 2000 µl/l. Tea tree, lavender, myrtle, and eucalyptus oils were slightly effective at controlling mycelium growth of each fungus species tested. Savory oil with major constituent of carvacrol 71.2% and thyme oil with major constituent of thymol 73.3% showed the greatest potential of the essential oils tested for use as natural fungicides.

scholarly journals In vitro evaluation of the tuberculocidal property of essential oils

2011 ◽  
Vol 5 (S6) ◽  
Author(s):  
S Dharan ◽  
G Rajasekaram ◽  
P Kaniappan ◽  
P Holzner ◽  
D Pittet
Keyword(s):  
Essential Oils ◽  
In Vitro Evaluation
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