Managing of Early Blight of Tomato Caused by Alternaria solani through Fungicides and Bioagents

Sreenivasulu, Raavi; Reddy, M. Surya Prakash; Tomar, D. S.; Sanjay, M. Subhash Sri; Reddy, Bharath Bushan

doi:10.20546/ijcmas.2019.806.175

Cited by 8 publications

(7 citation statements)

References 7 publications

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“…For the management of EB disease of tomato, many techniques have been in used such as chemical control by using fungicides e.g. propineb, mancozeb, copper oxychlorode, Tebuconazole, propiconazole 7 , 8 and selection of resistant genotypes 9 – 12 . In addition, different bio-control techniques are also being employed for the management of EB such as PGPR-mediated protection by stimulating production and activity of antioxidant peroxidase (POX) and polyphenol oxidase (PPO) enzymes in host plants 4 , 13 , use of galrlic ( Allium sativum) extract 12 , essential oils extracted from different varieties of Eucalyptus 14 , nano-particles biosynthesized from fruit peel extract of citrus kinnow 15 , extract from wild medicinal plants including Calotropis procera ( Aitón ) W. T. Aiton 16 and Putranjiva roxburghii 17 .…”

Section: Introductionmentioning

confidence: 99%

Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease

Rasool

Akhter

Soja

et al. 2021

Sci Rep

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The individual role of biochar, compost and PGPR has been widely studied in increasing the productivity of plants by inducing resistance against phyto-pathogens. However, the knowledge on combined effect of biochar and PGPR on plant health and management of foliar pathogens is still at juvenile stage. The effect of green waste biochar (GWB) and wood biochar (WB), together with compost (Comp) and plant growth promoting rhizobacteria (PGPR; Bacillus subtilis) was examined on tomato (Solanum lycopersicum L.) physiology and Alternaria solani development both in vivo and in vitro. Tomato plants were raised in potting mixture modified with only compost (Comp) at application rate of 20% (v/v), and along with WB and GWB at application rate of 3 and 6% (v/v), each separately, in combination with or without B. subtilis. In comparison with WB amended soil substrate, percentage disease index was significantly reduced in GWB amended treatments (Comp + 6%GWB and Comp + 3%GWB; 48.21 and 35.6%, respectively). Whereas, in the presence of B. subtilis disease suppression was also maximum (up to 80%) in the substrate containing GWB. Tomato plant growth and physiological parameters were significantly higher in treatment containing GWB (6%) alone as well as in combination with PGPR. Alternaria solani mycelial growth inhibition was less than 50% in comp, WB and GWB amended growth media, whereas B. subtilis induced maximum inhibition (55.75%). Conclusively, the variable impact of WB, GWB and subsequently their concentrations in the soil substrate was evident on early blight development and plant physiology. To our knowledge, this is the first report implying biochar in synergism with PGPR to hinder the early blight development in tomatoes.

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Section: Introductionmentioning

confidence: 99%

Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease

Rasool

Akhter

Soja

et al. 2021

Sci Rep

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“…A previous study conducted by Singh and Chowdhary, (2008) revealed that the foliar treatment of chilli with both systemic fungicides (in combination) had the highest inhibitory potential on growth of A. solani; at concentrations of 500, 750 and 1000 mg\ l, recording inhibitory percentages of; 83.93 %, 94.27 % and 97.64 %, respectively. Similarly, a previous work of Sreenivasulu et al, (2019) revealed that propiconazole provided critically important inhibition of conidium germination and mycelial growth of A. solani. A recent study conducted by Madadi et al, (2021) pointed out that penconazole showed near-complete inhibition of mycelial growth of A. alternata at 3 testes concentrations of; 100, 300 and 500 mg\ l. Furthermore, Sharma et al, (2018); Sreenivasulu et al, (2019) reported that less disease severity was observed in tomato plants treated with propiconazole against the pathogenic A. solani.…”

Section: Discussionmentioning

confidence: 56%

“…Similarly, a previous work of Sreenivasulu et al, (2019) revealed that propiconazole provided critically important inhibition of conidium germination and mycelial growth of A. solani. A recent study conducted by Madadi et al, (2021) pointed out that penconazole showed near-complete inhibition of mycelial growth of A. alternata at 3 testes concentrations of; 100, 300 and 500 mg\ l. Furthermore, Sharma et al, (2018); Sreenivasulu et al, (2019) reported that less disease severity was observed in tomato plants treated with propiconazole against the pathogenic A. solani. Ashour, (2009) recorded that fenomen + propamocarb, difenoconazole, trifloxystrobin, mancozeb and mancozeb + fenamidone caused a significant reduction in linear growth of A. solani under laboratory, greenhouse and fields conditions.…”

Section: Discussionmentioning

confidence: 56%

Efficacy of foliar fungicides on controlling early blight disease of Eggplant, under laboratory and greenhouse conditions

Matrood¹,

Rhouma

2021

Novel Research in Microbiology Journal

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Eggplant (Solanum melongena L.) production has gone through increasing difficulties due to relatively low yields in the last few years in Iraq. Alternaria solani, the causal agent of eggplant early blight; attacks hybrid and local varieties either in open field or in the greenhouse, causing a serious damage that led to decrease in crop yield. The strategies employed to manage this disease by Iraqi farmers were the synthetic fungicides application. In this study, several assays were conducted such as poisoned food technique (in vitro assay) and greenhouse experiment (in vivo assay); to evaluate the inhibitory efficacy of 3 three synthetic fungicides including; Topas® 100 (penconazole), Tilt 250 (propiconazole) and Leimay® (amisulbrom) on A. solani mycelial growth and disease intensity. In laboratory assays, Topas® 100 and Tilt 250 exhibited high inhibitory activities against A. solani as an airborne pathogen; recording mycelial inhibition rate above 94 % at a concentration of 1000 mg\ l. Furthermore, these two fungicides when applied preventively in greenhouse assays reduced significantly the disease severity index (DSI) by 18.83 % and 26.16 %, respectively. Current results revealed that Topas® 100 and Tilt 250 caused the highest antifungal potential manifested through reduction rate of fresh weight (9.62 and 8.58 g, respectively), and dry weight (4.61 and 4.60 g, respectively). Moreover, both fungicides recorded the highest peroxidase activities of 4.128 units/g/ml/min. and 3.038 units/g/ml/min., respectively. Current findings can be used to assist the eggplant growers to improve the control of early blight disease, and increase the marketable yields of this crop.

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“…Per cent reduction of early blight was noted to the tune of 68. [26] and Sharma et al (2018) [27] also reported application of Propiconazole shown reduction in disease and increase in yield of tomato. Similar results were observed in our present studies.…”

Section: Resultsmentioning

confidence: 96%

Assessment of fungicides against early blight of tomato induced by Alternaria solani (Ellis & Martin) under field conditions

Sharma¹,

Pruthi²,

Mohan³

et al. 2020

Int. J. Chem. Stud.

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Tomato (Lycopersicon esculentum Mill) is an important vegetable crop cultivated in almost all the areas of the country. Tomato, early blight caused by Alternaria solani has been known to cause severe yield losses. Hence, attempts were made to develop an effective strategy to manage the disease. Present investigations were carried out at Jagannath University Chaksu during the year 2018-19 and 2019-20. Early blight infected leaves of tomato were collected from near by areas of Jaipur, Dausa, and Tonk districts of Rajasthan revealed the association of the Alternaria pathogen. In the present studies the efficacy of some newer molecules like Difenconazole, Propiconazole, Hexaconazole Azoxystrobinn, Picoxystrobin, Pyraciostrobin along with commonly used chemical Mancozeb against early blight of tomato were tested using Pusa Ruby as a cultivar. A control plot with no application of fungicide was used as a check. Average yield was calculated after final picking. All the fungicidal application was found significantly superior over control in minimizing the disease. Hexaconazole (@500ml/ha.) was found significantly superior over all other treatments showing disease severity (8.50%) which is closely followed by Propiconazole (@ 500ml/ha.) with PDI (10.47%). Per cent reduction of early blight was noted to the tune of 68.91 and 61.70% respectively. . Similar trends were also obtained in (2019-20) with PDI 3.81 and 5.60% in both the treatments. Per cent reduction in disease was recorded 83.91 and 82.12% when the crop was sprayed by Hexaconazole and Propiconazole respeively. All the treatments were significantly enhance the yield over control. The maximum yield (34.01 and 33.56 T/ha) was recorded when the crop was sprayed by Hexaconazole in both the year of testing which was followed Propiconazole having yield of (32.66 and 30.19 T/ha.) in both the years of testing.

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Managing of Early Blight of Tomato Caused by Alternaria solani through Fungicides and Bioagents

Cited by 8 publications

References 7 publications

Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease

Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease

Efficacy of foliar fungicides on controlling early blight disease of Eggplant, under laboratory and greenhouse conditions

Assessment of fungicides against early blight of tomato induced by Alternaria solani (Ellis & Martin) under field conditions

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