Effect of bioagents and fungicide against earlyblight disease of tomato (Lycopersicon esculentum L.)

Zghair, Qayssar Nadhim; Lal, Abhilashaa; Mane, Musadaq Mnsoor; Simon, Sobita

doi:10.15740/has/ijpp/7.2/330-333

Cited by 3 publications

(4 citation statements)

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“…The better performance of BCA against Phomopsis leaf blight and fruit rot might be due to increased soil suppressiveness and better plant growth. In controlling early blight of tomato caused by Alternaria solani, the findings of Zghair et al (2014) achieved from seed treatment and foliar spray of T. harzianum (24.33%) as against control (33.47%) were comparable with the performance of our consortia of BCA. In this case, T. harzianum might have affected spore germination and mycelium development of the pathogen that resulted into inhibition of disease producing activity and induced resistance in the plant (Zghair et al 2014).…”

Section: Effect Of Consortia Of Biocontrol Agents and Biofertilizer Against Diseases Of Brinjal In Field Conditionsupporting

confidence: 76%

“…In controlling early blight of tomato caused by Alternaria solani, the findings of Zghair et al (2014) achieved from seed treatment and foliar spray of T. harzianum (24.33%) as against control (33.47%) were comparable with the performance of our consortia of BCA. In this case, T. harzianum might have affected spore germination and mycelium development of the pathogen that resulted into inhibition of disease producing activity and induced resistance in the plant (Zghair et al 2014). Similar findings were also reported by several workers (Osowski 2003;Raziq and Ishtiaq 2010;Pawar et al 2013).…”

Section: Effect Of Consortia Of Biocontrol Agents and Biofertilizer Against Diseases Of Brinjal In Field Conditionsupporting

confidence: 76%

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Consortia of entomo-pathogenic fungi and bio-control agents improve the agro-ecological conditions for brinjal cultivation of Assam

2020

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A liquid consortial formulation with three compatible biocontrol agents viz., Trichoderma harzianum, Beauveria bassiana and Metarhizium anisopliae was prepared with already standardized additives (Assam Agricultural University (AAU), Jorhat, Assam). Pot and field experiments conducted to test the efficacy of six different IPDM (Integrated Pests and Disease Management) modules with the prepared consortia showed that module-6 (seed treatment + seed bed treatment in nursery + soil application in main field + seedling dip treatment with consortia of biofertilizer, Rhizobium sp., Azotobacter sp. strain 52, Azospirillum sp. strain 71 and Bacillus sp. strain 5 W + spraying of consortia) was the best for the management of three important diseases of brinjal viz., Phomopsis leaf blight and fruit rot, Alternaria leaf spot, and Fusarium wilt. Field experiment repeated in the second year ustilizing six different modules revealed the module 6 as best in reduction of disease incidence and increasing the growth parameters and yield of the crop. Result of pooled analysis of field experiments showed a yield of 570.97q/ha with B:C ratio 3.99. The module was also found effective in improving the nutrient status with significant increase in P and K status of soil as well as microbial biomass carbon in both the years of experimentation (2014-2015 and 2015-2016). The module can be used by the farmers for organic cultivation of brinjal after further confirmation in multi locations of diverse agroecological condition of Assam.

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Section: Effect Of Consortia Of Biocontrol Agents and Biofertilizer Against Diseases Of Brinjal In Field Conditionsupporting

confidence: 76%

Section: Effect Of Consortia Of Biocontrol Agents and Biofertilizer Against Diseases Of Brinjal In Field Conditionsupporting

confidence: 76%

Consortia of entomo-pathogenic fungi and bio-control agents improve the agro-ecological conditions for brinjal cultivation of Assam

2020

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“…They also observed that in the combination of T. harzianum and P. fluorescens enhanced the plant growth. Zghair et al (2014) reported that seed treatment and foliar sprays of T. harzianum + P. fluorescens + Mancozeb gave lowest disease index. Thus, their combination not only suppressed the important pathogens of tomato but also promoted the growth of plant, which ultimately led to the increase in pesticide-free tomato production.…”

Section: Effect Of Bcas Amf and Fungicide Alone And In Combinationsmentioning

confidence: 99%

Field efficacy of different combinations of Trichoderma harzianum, Pseudomonas fluorescens, and arbuscular mycorrhiza fungus against the major diseases of tomato in Uttarakhand (India)

Kabdwal

Sharma

Tewari

et al. 2019

Egypt J Biol Pest Control

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Tomato is one of the major cash crops in the Golapar area of district Nainital in Uttarakhand (India), where farmers are facing the problem of diseases in tomato cultivation. In the present investigation, a survey of tomato fields in the Golapar area of Haldwani block was conducted. The survey revealed the occurrence of late blight, early blight, stem rot, and wilt diseases causing an average loss of 80% to tomato. To counter the above diseases, Trichoderma harzianum (Th43), Pseudomonas fluorescens (Pf173), Jas mycorrhiza (AMF), and the fungicide (Mancozeb) in different combinations applyed through soil application (SA), seedling treatment (ST), and foliar spray (FA) were evaluated for growth promotion and disease control in tomato at experimental and farmers' fields. The results of the study revealed that in experimental field, the maximum plant height (43.67 cm), highest number of branches (7.33) per plant, highest weight of fruit (47 g), highest number of fruits (39) per plant, minimum plant mortality (4% at 30 DAT and 3.2% at 30-60 DAT), minimum plant disease index (6.85), maximum total yield (256.00 q/ha), and marketable yield (246.67 q/ha) were observed in Th+Pf+JM (SA) + Th+Pf (ST) + Mancozeb (FS). At farmer's field, minimum plant mortality (7.31%) at 30 days after transplanting (DAT) (5.73%) in 30-60 DAT, minimum plant disease index (11.47), and maximum yield 249.91 q/ha were observed in Th+Pf+JM (SA) + Th+Pf (ST) + Mancozeb (FS) combination. So, it can be concluded that among all the treatments, integrated treatment comprising of soil application of T. harzianum, P. fluorescens, Jas mycorrhiza (AMF) + seedling treatment with T. harzianum and P. fluorescens + three foliar sprays of Mancozeb was found very effective in reducing the plant mortality, promoting the plant growth, and increasing the yield at experimental field as well as at farmers' fields.

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“…The application of T. harzianum in biological control showed a significant reduction in disease incidence, with some evidence supporting its ability to induce defense mechanisms in plants [ 6 ]. Zghair et al [ 7 ] reported that the biological preparation of T. harzianum can effectively reduce the disease intensity of tomato plants by increasing enzymatic antioxidants such as peroxidase, catalase, and polyphenol oxidase. The production of reactive oxygen species (ROS) and the antioxidants enzymes are the main indicator of early plant defense responses encountered by fungal pathogens [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Controlling Alternaria cerealis MT808477 Tomato Phytopathogen by Trichoderma harzianum and Tracking the Plant Physiological Changes

Mahmoud

Abdel‐Sater

al-amery

et al. 2021

Plants

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Plant responses during the pathogen infection and the pathogen control reflect its strategies to protect its cells. This work represents the Alternaria cerealis MT808477 as a phytopathogen causing leaf spot disease in tomatoes. A. cerealis was identified morphologically and genetically by 18SrRNA, and its pathogenicity was confirmed by light and scanning electron microscopy. Trichoderma harzianum has the ability to control A. cerealis MT808477 by stimulating various cell responses during the controlling process. The cell behavior during the biological control process was observed by analyses of total phenol, flavonoids, terpenoids, antioxidant, malondialdehyde and antioxidant enzymes (catalase and peroxidase). The extracts of infected tomato leaves were tested against plant and human pathogenic microorganisms. Results showed that the biological control process activates the defense cell strategies by increasing the plant tolerance, and activation of plant defense systems. The total phenol, flavonoids, terpenoids, antioxidant and malondialdehyde were increased after 48 h. Catalase and peroxidase were increased in infected tomato plants and decreased during the biological control process, reflecting the decrease of cell stress. Leaves extract inhibited the growth of nine plant and human pathogenic microorganisms. Biological control represents a safe and effective solution to phytopathogens that decreases plant cell stress by stimulating various defensive agents.

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Effect of bioagents and fungicide against earlyblight disease of tomato (Lycopersicon esculentum L.)

Abstract: An experiment was conducted to evaluate the effect of bio agents (Trichoderma harzianum and Pseudomonas fluorescens) and fungicides (mancozeb) against earlyblight of tomato caused by Alternaria solani (Ell. and Mart.

Cited by 3 publications

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Consortia of entomo-pathogenic fungi and bio-control agents improve the agro-ecological conditions for brinjal cultivation of Assam

Consortia of entomo-pathogenic fungi and bio-control agents improve the agro-ecological conditions for brinjal cultivation of Assam

Field efficacy of different combinations of Trichoderma harzianum, Pseudomonas fluorescens, and arbuscular mycorrhiza fungus against the major diseases of tomato in Uttarakhand (India)

Controlling Alternaria cerealis MT808477 Tomato Phytopathogen by Trichoderma harzianum and Tracking the Plant Physiological Changes

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