scholarly journals Efficacy of Plant Extracts and Biocontrol Agents against Root Rot of Tomato Incited by Rhizoctonia solani Kuhn

2019 ◽  
Vol 8 (11) ◽  
pp. 683-687
Author(s):  
Vaka Siva Kumar ◽  
Dasari Sreevarshini ◽  
Sobita Simon ◽  
Abhilasha A. Lal
Keyword(s):  
Rhizoctonia Solani ◽  
Plant Extracts ◽  
Root Rot ◽  
Biocontrol Agents

In-vivo evaluation of different fungicides, plant extracts, bio-control agents and organics amendments for management of dry root rot of chickpea caused by Macrophomina phaseolina

2018 ◽  
Author(s):  
Lalita Lakhran ◽  
R.R. Ahir
Keyword(s):  
Plant Extracts ◽  
Root Rot ◽  
Organic Amendments ◽  
Macrophomina Phaseolina ◽  
Biocontrol Agents ◽  
In Vivo Evaluation ◽  
Oil Cakes ◽  
Goat Manure ◽  
Neem Leaf Extract

The present study was planned to evaluate the efficacy of various fungicides, plant extracts, biocontrol agents and oil cakes against Macrophomina phaseolina causing dry root rot of chickpea. Among the tested biocontrol agents against Macrophomina phaseolina, T. viride was found the most effective against the fungus followed by T. harzianum, Bacillus subtalis and P. fluorescens was the least effective in reducing root rot incidence. Among the fungicides carbendazim was found most effective and recorded minimum root rot incidence. Among plant extracts, garlic extract was found most effective in reducing root rot incidence followed by neem leaf extract. In the case of organic amendments, Neem cake was the most effective in reducing the root rot incidence while wool waste and goat manure was found least effective in controlling root rot incidence.

Management of Root Rot of Fenugreek Caused by Rhizoctonia solani using Plant Extracts and Bio-agents

2020 ◽  
Author(s):  
Shankar Lal Yadav ◽  
R.P. Ghasolia
Keyword(s):  
Rhizoctonia Solani ◽  
Pseudomonas Fluorescens ◽  
Seed Yield ◽  
Plant Extracts ◽  
Trichoderma Harzianum ◽  
Root Rot ◽  
Disease Incidence ◽  
Clove Extract

Background: Root rot of fenugreek (Trigonella foenum-graecum L.) caused by Rhizoctonia solani is an important constraint to the crop and causes significant economic losses in Rajasthan as well as India and fungicides are the major tool to overcome the disease incidence. As per environment and health issues and demand of organically produced fenugreek green leaves and seeds, it is a major concerned to control it by eco-friendly approaches. The current study aimed to find the most effective control measure of this dreaded disease through eco-friendly approaches.Methods: The present field-laboratory investigations were conducted during 2016-17 and 2017-18, to evaluate six plant extracts in vitro and in vivo, namely neem (Azadirachta indica), Alstonia (Alstonia scholaris), garlic (Allium sativum), datura (Datura stramonium), tulsi (Ocimum tenuiflorum), aak (Calotropis gigantea) and four bio-agents (Trichoderma harzianum, T. viride, Bacillus subtilis and Pseudomonas fluorescens) in vivo through seed treatment alone and/or in combination for two consecutive years. Result: Our investigations in vitro with botanicals cleared that garlic clove extract was highly antimycotic to the pathogen (79.52%) followed by aak (62.48%) and neem extract (53.37%). Under field conditions, seed soaking with garlic clove extract (@10%) for 30 minutes was observed the most effective in reducing disease incidence (62.02%) and in increasing seed yield (65.35%) followed by aak (56.56% and 59.82%, respectively). In bio-agents, Trichoderma harzianum + Pseudomonas fluorescens (@ 3+3 g/kg seeds) was found superior in reducing disease incidence (66.81%) and in increasing seed yield (73.06%) and the next best was T. viride + P. fluorescens. The findings of this study can be utilized to manage the disease effectively and eco-friendly and also to obtain organic produce of the fenugreek.

scholarly journals Efficacy of Some Plant Extracts Against Rhizoctonia Solani on Pea

2010 ◽  
Vol 50 (3) ◽  
pp. 239-243 ◽  
Author(s):  
Abdulaziz Al-Askar ◽  
Younes Rashad
Keyword(s):  
Antifungal Activity ◽  
Growth Inhibition ◽  
Rhizoctonia Solani ◽  
Plant Extracts ◽  
Root Rot ◽  
Nigella Sativa ◽  
Disease Incidence ◽  
Syzygium Aromaticum ◽  
Clove Extract

Efficacy of Some Plant Extracts AgainstRhizoctonia Solanion PeaAntifungal activity of ethanol-water extracts of four medicinal plants, cinnamon (Cinnamomum verumPresl.), anise (Pimpinella anisumL.), black seed (Nigella sativaL.) and clove (Syzygium aromaticumL. Merr. & Perry.) was investigated against pea (Pisum sativumL.) root-rot fungusRhizoctonia solani. In vitroantifungal activity test shown a high growth inhibition at concentration (4%) of each plant extract. The highest antifungal activity was recorded for clove extract which causes complete growth inhibition at concentration of 1%. Efficacy of clove extract on disease incidence ofRhizoctoniaroot-rot of pea was investigated in the greenhouse pot experiment. Clove extract at concentration 4% as well as the chemical fungicide recorded highly significant increase in the percentage of survived plants (40 and 48%, respectively) and highly significant decrease in disease incidence.

Exploration of Endophytes from Alfalfa (Medicago sativa L.) as Biocontrol Agents

2020 ◽  
pp. 1-8
Author(s):  
Beilei Wu ◽  
Beilei Wu ◽  
Mei Li ◽  
Xiaoli Chen ◽  
Xiliang Jiang ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Root Rot ◽  
Agricultural Production ◽  
Biocontrol Agents ◽  
Bacillus Spp ◽  
Medicago Sativa L ◽  
The Common ◽  
Seedling Germination ◽  
Germination Experiments ◽  
Alfalfa Root

Endophytes are increasingly investigated as biocontrol agents for agricultural production. The identification of new endophytes with high effectiveness against plant disease is very important. A total of 362 strains of endophytes, including fungi, bacteria, and actinomycete, were isolated from alfalfa (Medicago sativa L.) collected in Hebei, Inner Mongolia and Ningxia provinces of China. The three strains of endophytic bacteria (NA NX51R-5, NA NX90R-8, and NA NM1S-1) with strong biocontrol capability with >50% effectiveness were screened against the common alfalfa root rot pathogen Fusarium oxysporum F. sp. medicaginis in alfalfa seedling germination experiments on MS medium and pot experiments. Using phylogenetic analysis, the isolates of NA NM1S-1 and NA NX51R-5 were identified as Bacillus spp. by 16S rDNA, while NA NX90R-8 was found to be Pseudomonas sp.

scholarly journals Effect of Plant Extracts and Biological control agents on Rhizoctonia solani Kuhn

2021 ◽  
Vol 735 (1) ◽  
pp. 012079
Author(s):  
Muneer Saeed M. Al-Baldawy ◽  
Ahed A A H Matloob ◽  
Mohammed K. N. Almammory
Keyword(s):  
Biological Control ◽  
Rhizoctonia Solani ◽  
Plant Extracts ◽  
Biological Control Agents

scholarly journals In-vitro compatibility assay of indigenous Trichoderma and Pseudomonas species and their antagonistic activities against black root rot disease (Fusarium solani) of faba bean (Vicia faba L.)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Alemayehu Dugassa ◽  
Tesfaye Alemu ◽  
Yitbarek Woldehawariat
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Pseudomonas Fluorescens ◽  
Faba Bean ◽  
Fusarium Solani ◽  
Root Rot ◽  
Mycelial Growth ◽  
Biocontrol Agents ◽  
Black Root Rot ◽  
Root Rot Disease ◽  
Rot Disease

Abstract Background Faba bean (Vicia faba L.) cultivation is highly challenged by faba bean black root rot disease (Fusarium solani) in high lands of Ethiopia. To ensure sustainable production of faba beans, searching for eco-friendly disease management options is necessary to curb the progress of the disease timely. The indigenous biocontrol agents that suit local environments may effectively strive with in-situ microorganisms and suppress local pathogen strains. This study aimed to screen antagonistic indigenous compatible Trichoderma and Pseudomonas strains against Fusarium solani. In the pathogenicity test, soil-filled pots were arranged in complete random block design and sown with health faba bean seeds. The effect of some fungicides was evaluated against Fusarium by food poisoning methods to compare with the biocontrol agents. The antagonistic efficacy of biocontrol agents and their compatibility was investigated on Potato dextrose agar medium. Results Fusarium solani AAUF51 strain caused an intense root rotting in faba bean plant. The effect of Mancozeb 80% WP at 300 ppm was comparable with Trichoderma and Pseudomonas strains against Fusarium. The mycelial growth of test the pathogen was significantly (P ≤ 0.05) reduced to 86.67 and 85.19% by Trichoderma harzianum AAUW1 and Trichoderma viridae AAUC22 strains in dual culture, respectively. The volatile metabolites of Pseudomonas aeruginosa AAUS31 (77.78%) found the most efficient in reducing mycelial growth of Fusarium followed by Pseudomonas fluorescens AAUPF62 (71.11%) strains. The cell-free culture filtrates of Pseudomonas fluorescens AAUPF62 and Pseudomonas aeruginosa AAUS31 were more efficient than the Trichoderma strain in reducing the growth of Fusarium isolates. There was no zone of inhibition recorded between Trichoderma harzianum AAUW1, Trichoderma viridae AAUC22, Pseudomonas aeruginosa AAUS31, and Pseudomonas fluorescens AAUPF62 strains, hence they were mutually compatible. Conclusions The compatible Trichoderma and Pseudomonas strains showed antagonistic potentiality that could be explored for faba bean protection against black root rot disease and might have a future dual application as biocontrol agents.

scholarly journals Rhizospheric bacteria as potential biocontrol agents against Fusarium wilt and crown and root rot diseases in tomato

2021 ◽  
Author(s):  
Md. Masudur Rahman Khalil ◽  
Rosario Alicia Fierro-Coronado ◽  
Ofelda Peñuelas-Rubio ◽  
Alma Guadalupe Villa-Lerma ◽  
Rigoberto Plascencia-Jatomea ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Root Rot ◽  
Biocontrol Agents ◽  
Rhizospheric Bacteria ◽  
Crown And Root Rot
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