scholarly journals Burkholderia SP. Strain TNAU-1 for Biological Control of Root Rot in Mung Bean (Vigna Radiata L.) Caused by Macrophomina Phaseolina

2011 ◽  
Vol 51 (3) ◽  
pp. 273-278 ◽  
Author(s):  
Vijayalakshmi Satya ◽  
Ayyathurai Vijayasamundeeswari ◽  
Vaikuntavasan Paranidharan ◽  
Rethinasamy Velazhahan
Keyword(s):  
Biological Control ◽  
Root Rot ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Seed Treatment ◽  
Macrophomina Phaseolina ◽  
Bacterial Suspension ◽  
Seedling Vigour ◽  
Soil Application ◽  
Powder Formulation

BurkholderiaSP. Strain TNAU-1 for Biological Control of Root Rot in Mung Bean (Vigna RadiataL.) Caused byMacrophomina PhaseolinaThe potential ofBurkholderiasp. strain TNAU-1 for the management of mung bean (Vigna radiataL.) root rot caused byMacrophomina phaseolinawas evaluated under greenhouse conditions.Burkholderiasp. strain TNAU-1 inhibited the mycelial growth ofM. phaseolina in vitroand produced an inhibition zone of 18.8 mm. Mung bean seeds when treated with the bacterial suspension, showed significant increase in root length, shoot length and seedling vigour. A talc-based powder formulation ofBurkholderiasp. strain TNAU-1 was developed and evaluated for its efficacy in the management of mung bean root rot under greenhouse conditions. Seed treatment or soil application of the powder formulation ofBurkholderiasp. strain TNAU-1 significantly reduced the incidence of root rot and increased the germination percentage and plant height. Seed treatment with the powder formulation ofBurkholderiasp. strain TNAU-1 alone was effective in controlling root rot disease; but the combined seed treatment and soil application ofBurkholderiasp. strain TNAU-1, increased the efficacy. Seed treatment and soil application withBurkholderiasp. reduced the root rot incidence from 52.6 per cent (with non-bacterized seeds) to 16.7 per cent. Control of root rot with the application ofBurkholderiasp. by seed treatment and soil application was not statistically different from that obtained with seed treatment with carbendazim. The endophytic movement ofBurkholderiasp. in the stem, roots and leaves of mung bean was confirmed through PCR usingBurkholderiasp. specific primers which resulted in the amplification of a 417 bp product.

scholarly journals Gamma Radiation (60Co) Exposure and Application of Antagonists for the Suppression of Root Rot Diseases in Sunflower (Helianthus annus L.) and Mung Bean (Vigna radiata (L.) R. Wilczek)

Our Nature ◽  
1970 ◽  
Vol 8 (1) ◽  
pp. 26-33 ◽  
Author(s):  
S. Dawar ◽  
M.J. Zaki ◽  
N. Ikram ◽  
M. Tariq
Keyword(s):  
Gamma Radiation ◽  
Gamma Rays ◽  
Root Rot ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Growth Parameters ◽  
Macrophomina Phaseolina ◽  
Root Weight ◽  
Complete Suppression ◽  
Helianthus Annus

An experiment was carried out for the control of root rot fungi such as Fusarium spp., Macrophomina phaseolina (Tassi) Goid., and Rhizoctonia solani Kühn in Sunflower (Helianthus annus L.) and Mung bean (Vigna radiata (L.) R. Wilczek). Seeds were treated with gamma radiation (60Co) for 0, 2, 8 and 16 minutes intervals and soil was drenched with different antagonists such as Trichoderma harzianum Rifai, Pseudomonas aeruginosa (Schroeter) Migula and Rhizobium meliloti Dangeard. All the antagonists significantly increased germination percentage, shoot length, root length, shoot weight, root weight, leaf area and showed complete suppression of M. phaseolina and R. solani observed in mung bean and sunflower. In both crops, mostly growth parameters increased as the exposure of gamma rays increased whereas in some cases it decreased. P. aeruginosa and R. meliloti were observed to be satisfactory biocontrol agents followed by T. harzianum whereas all exposure time of irradiation of gamma rays (60Co) to seeds of mung bean and sunflower were found to be best.DOI: 10.3126/on.v8i1.4309

scholarly journals Soil amendment with Aerva javanica (Burm. F.) Juss. ex Schult. in the control of root rot fungi of cowpea [Vigna unguiculata (L.) Walp.] and mung bean [Vigna radiata (L.)]

2012 ◽  
Vol 65 (3) ◽  
pp. 69-74 ◽  
Author(s):  
Naheed Ikram ◽  
Shahnaz Dawar
Keyword(s):  
Vigna Unguiculata ◽  
Root Rot ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Growth Parameters ◽  
Macrophomina Phaseolina ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Fresh Weight ◽  
Plant Parts

Root rot fungi cause severe losses of crop plants, so the present work was carried out to determine the effect of <em>Aerva javanica </em>parts powder on root infecting fungi of mung bean (<em>Vigna radiata </em>(L.) and cowpea (<em>Vigna unguiculata </em>(L.) Walp.). <em>A. javanica </em>parts (stem, leaves and flower) were used as soil amendments at 0.1, 1 and 5% to check the effectiveness on growth parameters. All the plant parts showed a significant reduction in root rot fungi like <em>Fusarium </em>spp., <em>Rhizoctonia solani </em>Kuhn, and <em>Macrophomina phaseolina </em>(Tassi) Goid. It was noted that germination percentage, fresh weight, leaf area and number of nodules were significantly higher and the inhibitory effect on root rot fungi increased when the soil was amended with <em>A. javanica </em>leaves at 1%. Thus, among all the treatments, <em>A. javanica </em>leaves at 1% were found to be the most effective against root rot fungi.

Department of Plant Pathology, Swami Keshwanand Rajasthan Agricultural University, Bikaner-334 001, Rajasthan, India.

2020 ◽  
Author(s):  
Mohit . Kumar ◽  
Data Ram Kumhar ◽  
Ashok Kumar Meena ◽  
Kiran . Choudhary
Keyword(s):  
Plant Pathology ◽  
Grain Yield ◽  
Root Rot ◽  
Seed Treatment ◽  
Disease Incidence ◽  
Soil Application ◽  
Percent Inhibition

Bio-control agents and bio-fertilizer minimized the root rot incidence, increased percent inhibition, increased grain yield and nodulation in mungbean significantly as compared to control. The minimum 13.50% disease incidence, maximum 79.23% inhibition of dry root rot, maximum grain yield of 14.8q/ha and maximum 24 nodules/plant were observed in the treatment T13. Where T. harzianum in combination with Rhizobium was used as seed treatment and soil application followed by the treatment(T14) where P. fluorescens was used in combination with Rhizobium (18.50% disease incidence, 71.54% disease inhibition,13.4q/ha grain yield and 21 nodules/plant. used as seed treatment and soil application.

scholarly journals Biological control of downy mildew of maize caused by Peronosclerospora sorghi under environmentally controlled conditions

2016 ◽  
Vol 8 (1) ◽  
pp. 279-283 ◽  
Author(s):  
Y. Sireesha ◽  
R. Velazhahan
Keyword(s):  
Biological Control ◽  
Plant Growth ◽  
Downy Mildew ◽  
Seed Treatment ◽  
Scale Up ◽  
Germination Percentage ◽  
Climatic Conditions ◽  
Seedling Vigour ◽  
Peronosclerospora Sorghi ◽  
Antagonistic Microorganisms

Downy mildew disease, caused by Peronosclerospora sorghi, is one of the most serious diseases of maize. The disease is currently managed by seed treatment with metalaxyl fungicides. However, problems regarding environmental pollution resulting from the use of fungicides and development of fungicide resistance within populations of P. sorghi are of increasing concern. Assuming that biological control by means of using antagonistic microorganisms may be an alternative for the management of this disease, the efficacy of biocontrol agents viz., Bacillus subtilis G1, Bacillus amyloliquefaciens B2, Brevibacillus brevis 57 and Pseudomonas fluorescens Pf1 for the management of downy mildew of maize and for promoting plant growth was evaluated. The results indicated that seed treatment with B. subtilis G1 and B. amyloliquefaciens B2 significantly (P = 0.05) increased the germination percentage and seedling vigour of maize as assessed by roll towel method. Among them, B. subtilis G1 was the most effective and recorded 9% and 31% increases in germination percentage and seedling vigour of maize respectively, as compared to the control. A talc- based powder formulation of B. subtilis G1 when applied through seed at the rate of 10 g/kg reduced the downy mildew incidence up to 54% under greenhouse conditions. Results of this study suggest that B. subtilis G1 is a promising bioagent for the management of downy mildew of maize and for promoting plant growth. This antagonist could be further exploited for commercial scale up for ecofriendly management of downy mildew of maize under localized climatic conditions.

Evaluation for the Resistance of Green Gram (Vigna radiata L.) Germplasm against Macrophomina phaseolina

2021 ◽  
Author(s):  
Mohit Kumar ◽  
Data Ram Kumhar ◽  
Surbhi Garg ◽  
Mahendra Partap
Keyword(s):  
Root Rot ◽  
Vigna Radiata ◽  
Rating Scale ◽  
Macrophomina Phaseolina ◽  
Green Gram ◽  
Legume Crop ◽  
Disease Rating ◽  
Production Area ◽  
Maize Meal ◽  
Serious Disease

Background: The green gram (Vigna radiata L.) is the major legume crop in India. Dry root rot(DRR) incited by M. phaseolina is a serious problem to the green gram production area in the world and India; Dry root rot has in recent years become a major obstacle to the successful and gainful growing of green gram, which can lead to significant losses in green gram production. The host plant resistance is the best alternative to management the DRR of the green gram, it is an economical and eco-friendly way to disease management. In the experiment, Twenty-five green gram germplasm has been tested for resistance to DRR, a serious disease caused by Macrophomina phaseolina. Methods: M. phaseolina sand maize meal inoculum was applied to the field in sufficient amounts to maintain the sick plot before planting green gram germplasm, each germplasm was planted in three rows of 5 m in length, maintaining a distance between plants of 10 cm, the incidence of DRR was recorded using a disease rating scale. Based on disease reaction, green gram germplasm was grouped into different categoriesResult: From 25 green gram germplasm, four germplasm showed a resistant reaction to dry root rot, namely IPM-02-03, G-2, MH-2-15, MUM-2, while this has been observed. Susceptibility of green gram germplasm to dry root rot such as RMG-26.

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