EFFECTIVENESS OF BIO-GEL BASED POWDER FORMULATIONS OF BACTERIAL BIOCONTROL AGENTS IN CONTROLING ROOT ROT DISEASE OF BEAN CAUSED BY Sclerotium rolfsii

2010 ◽  
Vol 1 (1) ◽  
pp. 21-33
Author(s):  
G. Amer
Keyword(s):  
Root Rot ◽  
Sclerotium Rolfsii ◽  
Biocontrol Agents ◽  
Root Rot Disease ◽  
Rot Disease

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 Evaluation of plant extracts, fungicides, bio-agent and soil amendments against foot and root rot disease of betelvine caused by Sclerotium rolfsii under field condition

2020 ◽  
Vol 44 (4) ◽  
pp. 669-677
Author(s):  
MH Rahman ◽  
MR Islam ◽  
FM Aminuzzaman ◽  
A Latif ◽  
S Nahar
Keyword(s):  
Trichoderma Harzianum ◽  
Root Rot ◽  
Untreated Control ◽  
Disease Incidence ◽  
Sclerotium Rolfsii ◽  
Control Treatment ◽  
Piper Betle ◽  
Root Rot Disease ◽  
Clove Extract ◽  
Rot Disease

The studies were carried out on the management of foot and root rot disease caused by Sclerotium rolfsii Sacc. of betelvine (Piper betle L.) during April, 2017 to April, 2018 in a betelvine orchard (baroj) in the experimental farm of Sher-e-Bangla Agricultural University, Dhaka. There were 10 treatments, namely Provax 200, Tilt 250 EC, Score 250 EC, Pencozeb 80 WP, Garlic clove extract, Allamanda leaf extract, Poultry waste, Vermi-compost, Trichoderma harzianum and Control. The in-vivo evatuation, plant was inoculated by S. rolfsii after six month of plantation. The evaluation revealed that the lowest disease incidence of 8.33% was found in Provax 200 whereas the highest disease incidence of 91.67 was recorded under the untreated control treatment. The maximum of 90.91% reduction in disease incidence over control was found under Provax 200, which was significantly higher compared to all other treatments. Among the treatments, Provax 200 was noted as the most effective fungicide followed by Score 250 EC. The highest yield (7.57 t/ha) at 120 days after inoculation was found in case of Provax 200 which was 330.1% increased over untreated control. Stem and soil treated with Provax 200 including spraying at 3 days after inoculation, then sprayed at 7 days’ intervals minimized disease incidence and increased yield. Among the eco-friendly approach, Garlic clove extract, Trichoderma harzianum and soil amended with Vermi-compost also showed better performance in controlling foot and root rot disease of betelvine as compared to control. Bangladesh J. Agril. Res. 44(4): 669-677, December 2019

scholarly journals Evaluation of Some Fungicides and Bio-Agents against Sclerotium rolfsii and Foot and Root Rot Disease of Eggplant (Solanum melongena L.)

2016 ◽  
Vol 14 (1) ◽  
pp. 92-97 ◽  
Author(s):  
Mohammad Nuray Alam Siddique ◽  
Abu Noman Faruq Ahmmed ◽  
Md. Golam Hasan Mazumder ◽  
M O Khaiyam ◽  
Md. Rafiqul Islam
Keyword(s):  
Plant Extracts ◽  
Root Rot ◽  
Sclerotium Rolfsii ◽  
Poultry Manure ◽  
Solanum Melongena ◽  
Mycelium Growth ◽  
Root Rot Disease ◽  
Randomized Design ◽  
Adjacent Soil ◽  
Rot Disease

Two experiments were conducted in a complete randomized design (CRD) with three replications to evaluate the efficacy of some fungicides and bio-agents against foot and root rot of eggplant. Ten treatments including five fungicides, two plant extracts, one poultry manure and an antagonist were evaluated against the disease and its causal agent. Fungicides and plant extracts were sprayed at the base of each plant and adjacent soil at 40, 50 and 60 days after transplanting (DAT). Poultry manure and bio-agent were applied to the soil before transplanting. The highest reduction of mycelium growth (74.44 %) and sclerotia production (77.13 %) were recorded in Bavistin 50 WP by poison food technique. Topgan 50 WP and Ridomil Gold also had similar effects. The lowest incidence (7.10 %) of foot rot was observed in Bavistin 50 WP at 120 DAT that was similar with Topgan 50 WP and Ridomil Gold. The lowest disease severity (stem lesion area)  was also found in each of Bavistin 50 WP (0.71 cm) and Topgan 50 WP which resulted in  higher yield (18.07 ton/ha). Application of bio-agent (Trichoderma harzianum) also showed promising effect against foot and root rot disease. Bavistin 50 WP is therefore recommended for controlling the foot and root rot of eggplant.The Agriculturists 2016; 14(1) 92-97

scholarly journals Management of Ashwagandha root rot disease with fungicides, biocontrol agents and botanicals

2016 ◽  
Vol 8 (1) ◽  
pp. 305-309
Author(s):  
R. P. S. Jetawat ◽  
K. Mathur
Keyword(s):  
Root Rot ◽  
Trichoderma Viride ◽  
Maximum Yield ◽  
Integrated Treatment ◽  
Biocontrol Agents ◽  
Seed Treatments ◽  
Soil Application ◽  
Neem Cake ◽  
Root Rot Disease ◽  
Rot Disease

The experiment was conducted to study fungicides, biocontrol agents and botanicals for management of ashwagandha root rot disease. Ashwagandha root rot disease caused by two pathogen Fusarium solani and Rhizoctonia solani. In field trial, seed treatments with integration of fungicides, neem cake manure, neem oil and Trichoderma viride agent evaluated as seed treatments individually as well as in different combination of seed treatment and soil application of neem cake was found effective integrated treatment (ST SAAF + neem cake manure + T. viride) and soil application of neem cake manure@500g/plot showed minimum per cent root rot and maximum per cent germination and maximum yield of Ashwagandha as compared to their individual applications over the untreated control.

scholarly journals Management of cauliflower seedling disease (Sclerotium rolfsii) in seedbed with different substrate based Trichoderma harzianum Bio-fungicides

2018 ◽  
Vol 42 (4) ◽  
pp. 609-620
Author(s):  
MI Faruk ◽  
ML Rahman
Keyword(s):  
Rice Bran ◽  
Wheat Bran ◽  
Trichoderma Harzianum ◽  
Root Rot ◽  
Agricultural Research ◽  
Sclerotium Rolfsii ◽  
Root Weight ◽  
Grass Pea ◽  
Root Rot Disease ◽  
Rot Disease

Efficacy of rice bran, wheat bran, grass pea bran and their combinations with or without mustard oilcake (MOC) were tested as substrate of Trichoderma harzianum based bio-fungicides for the management of foot and root rot disease of cauliflower caused by Sclerotium rolfsii in the seedbed during three consecutive growing seasons from 2011 through 2014 in the net house of Bangladesh Agricultural Research Institute, Gazipur. The seedbed soil was inoculated with pathogen S. rolfsii colonized on barley grain before treatment with T. harzianum based bio-fungicides. The results of three years trial revealed that T. harzianum based bio-fungicides effectively reduced pre-emergence and post-emergence mortality of cauliflower seedling in seedbed. Besides, vegetative growth of cauliflower seedlings viz. shoot length, shoot weight, root length and root weight were enhanced significantly by different substrates based T. harzianum bio-fungicides in S. rolfsii sick seedbed. The substrates rice bran, wheat bran, grass pea bran and their combination with mustard oilcake (MOC) were equally suitable for effective formulation of T. harzianum bio-fungicides against foot and root rot disease of cauliflower in seedbed.Bangladesh J. Agril. Res. 42(4): 609-620, December 2017

scholarly journals Combined Effect of Arbuscular Mycorrhiza, Rhizobium and Sclerotium rolfsii on Grass Pea (Lathyrus sativus)

2017 ◽  
Vol 15 (1) ◽  
pp. 143-155
Author(s):  
M Rahman ◽  
ME Ali ◽  
F Alam ◽  
MN Islam ◽  
MAH Bhuiyan
Keyword(s):  
Arbuscular Mycorrhiza ◽  
Root Rot ◽  
Sclerotium Rolfsii ◽  
Am Fungi ◽  
Combined Effect ◽  
Lathyrus Sativus ◽  
Nodule Number ◽  
Root Rot Disease ◽  
Dual Inoculation ◽  
Rot Disease

The present study was carried out to evaluate the combined effect of indigenous arbuscular mycorrhizal (AM) fungi, Rhizobium and Sclerotium rolfsii on Grasspea (Lathyrus sativus) in the net house of Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during 2014-2015 through 2015-2016. The experiment was designed in RCBD with 8 treatments and 4 replications. Grasspea variety BARI Khesari-1 was used as a test crop. Peat based rhizobial inoculum (BARI RLs-10) was used in this experiment @ 50 g kg-1 seed. The AM fungi used in this experiment were Glomus fusianum, Glomus macrocarpum, Glomus warcuppi, Acaulospora foveata, Acaulospora denticulate, Gigaspora albida, Gigaspora rosea, Glomus spp. etc. Soil based AM inoculum containing about approximate 252 spores and infected root pieces of the host plant was used pot-1. There were eight treatments viz. T1: Arbuscular mycorrhiza (AM), T2: Rhizobium, T3: AM + Rhizobium, T4: Sclerotium rolfsii, T5: Sclerotium rolfsii + AM, T6: Sclerotium rolfsii + Rhizobium, T7: Sclerotium rolfsii + AM + Rhizobium and T8: Control. Dual inoculation (AM + Rhizobium) significantly increased germination (%), nodule number and dry weight, root colonization by AM fungi and spore population in rhizosphere soils of grasspea compared to single inoculation or any other treatments. Dual inoculation increased germination after 23 DAS (20% in 2014-2015 and 23% in 2015-2016) compared to control. It increased nodule number plant-1 (172% in 2014-2015 and 72% in 2015-2016) over AM treatment, and (112% in 2014-2015 and 26% in 2015-2016) over Rhizobium treatment. It also increased root infection (20% in 2014-2015 and 56% in 2015-2016) over AM treatment, and (200% in 2014-2015 and 100% in 2015-2016) over Rhizobium treatment. It reduced foot and root rot disease (48% in 2014-2015 and 44% in 2015-2016) compared to control. On the contrary, Sclerotium rolfsii + Rhizobium, Sclerotium rolfsii + AM, and Sclerotium rolfsii + AM + Rhizobium reduced 12-17%, 16-20% and 28-31% foot and root rot disease, respectively compared to only Sclerotium rolfsii treatment. Therefore, use of these bio-control agents could be promoted as an active component of bio-intensive Integrated Disease Management Program (IDMP) under organic mode. The Agriculturists 2017; 15(1) 143-155

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