Management of root-rot disease complex of mungbean caused by Macrophomina phaseolina and Rhizoctonia solani through soil application of Trichoderma spp.

Seed treatment of soybean with Bndyrhizobium japonicum, Trichoderma harzianum, T. viride, T. hamatum, T. koningii and T. pseudokoningii significantly controlled the infection of 30-day-old seedlingsby Maerophomina phaseolina, Rhizoctonia solani and Fusarium spp. In 60-day-old plants Trichoderma spp.. and B. japonicum inhibited the grouth of R. solani and Fusarium spp., whereas the use of B. japonicum (TAL-102) with T. harzianum. T. viride, T. koningii and T. pseudokoningii controlled the infection by M. phaseolina. Greater grain yield was recorded when B. japonium (TAI-102) was used with T. hamatum.

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Efficacy of the bioagents Bacillus isolates and Trichoderma spp. in the control of wilt/root-rot disease in chickpea

World Journal of Science Technology and Sustainable Development ◽

10.1108/wjstsd-10-2015-0051 ◽

2015 ◽

Vol 12 (4) ◽

pp. 303-314 ◽

Cited By ~ 1

Author(s):

Hanan Ibrahim Mudawi ◽

Mohamed Osman Idris

Keyword(s):

Population Density ◽

Root Rot ◽

Growth Parameters ◽

Disease Incidence ◽

Trichoderma Spp ◽

Content Type ◽

Disease Complex ◽

Root Rot Disease ◽

Root Necrosis ◽

Rot Disease

Purpose – The purpose of this paper is to investigate the ability of four microorganisms to reduce disease infection of root lesion nematode (Pratylenchus spp.) and Fusarium spp. the causal agent of wilt/root-rot disease complex in chickpea. Design/methodology/approach – A pot experiment was conducted for three consecutive winter seasons. A completely randomized design with five replicates was adopted. Two Bacillus isolates and Trichoderma harzianum and T. viride and their combinations were applied in infected soil. The effect on plant growth parameters, disease incidence and severity, root necrosis, weight of shoot and root, nematode population density and reproductive index were assessed. Findings – The applications significantly (p=0.05) reduced the wilt/root-rot diseases complex. The reduction was attributed to the decline of the population density of nematodes in soil and root, and the suppression of the disease complex compared to controls, represented by reproductive index and the disease intensity index. Combinations were better than individual inoculation. The use of Bacillus isolate B3 and T. harzianum increased the number of flowers by 88.34 per cent. Reduction in the severity of root necrosis was in the range of 2.22-5.55 within a scale of 1-10. These findings indicate the significance of utilizing local bioagents for control of wilt/root-rot disease complex in chickpea plants. Originality/value – The microorganisms used in this study are indigenous.

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A Non-chemical Approach to the Management of Root Rot Disease Complex of Tomato Concomitantly Caused by Rhizoctonia solani and Meloidogyne javanica

Indian Journal of Agricultural Research ◽

10.18805/ijare.a-5807 ◽

2021 ◽

Author(s):

Aradhna Sagwal ◽

Satish Kumar ◽

Kushal Raj

Keyword(s):

Rhizoctonia Solani ◽

Root Rot ◽

Sandy Loam ◽

Organic Amendments ◽

Total Mortality ◽

Inoculum Level ◽

Disease Complex ◽

Root Rot Disease ◽

Solanum Lycopersicum L ◽

Rot Disease

Background: Tomato (Solanum lycopersicum L.) is an important vegetable crop not only for its economic importance but also for its nutritional value. It remained prone to various diseases and amongst them, root rot disease complex caused by concomitant occurrence of R. solani and M. javanica has been key problem in Haryana resultantly reduces yield and production to great extent. Methods: Present study was carried out with the aim to evaluate the effect of organic amendments and biocontrol agents on root rot disease complex in tomato cv. Hisar Arun (Selection 7). Tomato seeds were sown @ 10 seeds/pot filled with sterilized sandy loam soil having 1000 mg/kg soil (Rhizoctonia solani inoculum level) and 1000 J2/kg soil (M. javanica inoculum level). Result: The minimum mortality of 33.3 and 36.6 per cent was observed when the soils were incorporated with mustard cake @ 2g/kg soil followed by cotton cake @ 2g/kg soil in comparison to total mortality of 63.3 per cent in control pots and the soil application of mustard cake protected 47.4 per cent plants from mortality. The application of Glomus mosseae (VAM) at 200, 150, 100 sporocarps/kg soil managed disease to the extent of 36.8% 21.0% and 10.4% respectively. Incorporation of T. harzianum@ 5g/kg soil and 10g/kg soil managed the disease to the extent of 21% and 42% respectively. The minimum mortality of 33.3% was recorded when seeds were dressed with Carbendazim 50WP whereas 36.6 per cent with Carboxin 37.5WP + Thiram 37.5WP in comparison to 63.3 per cent in control pots. Systemic approach to manage the root-rot disease complex with the help of organic amendments, bioagents and fungicides can prevent the losses caused to the crop.

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Interactive effect of Meloidogyne incognita and Macrophomina phaseolina on the development of root–rot disease complex in relation to growth and physiological attributes of chickpea

Hellenic Plant Protection Journal ◽

10.2478/hppj-2020-0002 ◽

2020 ◽

Vol 13 (1) ◽

pp. 13-23

Author(s):

A. Sumbul ◽

I. Mahmood

Keyword(s):

Meloidogyne Incognita ◽

Root Rot ◽

Action Plan ◽

Interactive Effect ◽

Macrophomina Phaseolina ◽

Pathogenic Potential ◽

Disease Complex ◽

Root Rot Disease ◽

Rot Disease ◽

The Impact

SummaryThe interactive relationship between the root–knot nematode Meloidogyne incognita and the root-rot fungus Macrophomina phaseolina in a root–rot disease complex of chickpea (Cicer arietinum var. avrodhi) was studied in a net house. The present study was carried out in such a manner so that the pathogenic potential of M. incognita and M. phaseolina individually, simultaneously and sequentially could be monitored. The pathogens singly as well as in combination led to significant reduction in growth, yield, nutrient and biochemical parameters. Gaseous exchange parameters like photosynthetic rate, transpiration rate and stomatal conductance were also reduced following infection of plants by the pathogens. However, maximum reduction was noticed in simultaneous inoculation with both pathogens. Sequential inoculation, where M. incognita preceded M. phaseolina by 15 days, was more damaging to the crop in comparison to that where M. phaseolina preceded M. incognita inoculation by 15 days. Infection by M. phaseolina caused a considerable reduction in the number of galls, egg–masses and nematode multiplication, with the highest reduction observed in plants simultaneously inoculated with the pathogens. Those plants also showed the highest disease severity in terms of percent root–rot. Thus, a manifold action plan to reduce the impact of the root-rot disease complex on chickpea crops has to be formulated.

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