Chemical control of potato common scab disease under field conditions

Hosny, Mohamed; Abo-Elyousr, Kamal A. M.; Asran, M. R.; Saead, Farag A.

doi:10.1080/03235408.2013.870375

Cited by 20 publications

(10 citation statements)

References 17 publications

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“…Our results indicate, however, that the application of the microbial product at 225 kg·ha −1 and 300 kg·ha −1 greatly suppressed the PCS disease index and increased potato tuber yield, relative to untreated plots. The reduction in the PCS disease index (46.1% and 31.7% in 2016 and 2017, respectively) obtained by the application of 300 kg·ha −1 of the microbial product, composed of a consortium of Bacillus subtilis and Trichoderma harzianum, was similar to the level of reduction obtained with the use of chemical fungicides, such as Capitan (33.8%) and Ridomil (31.5%) [ 25 ]. Other studies have demonstrated that application of Brevibacillus laterosporus AMCC100017 can also reduce the PCS disease index by 36.7% under controlled experimental conditions [ 5 ].…”

Section: Resultsmentioning

confidence: 84%

A Rhizosphere-Derived Consortium of Bacillus subtilis and Trichoderma harzianum Suppresses Common Scab of Potato and Increases Yield

Wang

Zhuang

et al. 2019

Computational and Structural Biotechnology Journal

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The ability of a rhizosphere-derived microbial product (composed of a consortium of a strain of Bacillus subtilis and a strain of Trichoderma harzianum ) to suppress common scab disease in potato caused by Streptomyces spp. was examined over a two-year period. Relative to the condition in which 0 kg·ha −1 of the designated microbial product was applied (control), the disease index decreased by 30.6%–46.1%, and yield increased by 23.0%–32.2% in treatments in which 225 or 300 kg·ha −1 of the microbial product was administered, respectively. The bacterial communities present in the rhizosphere were assessed at an early stage of tuber formation, a time at which tubers are susceptible to common scab. Potato plants in which soils were treated with 225 or 300 kg·ha −1 of the microbial product harbored rhizospheric microbiota with lower α-diversity and an increased relative abundance of taxa representing the beneficial bacteria. In summary, a select microbial product composed of a consortium of Bacillus subtilis and Trichoderma harzianum effectively suppressed common scab disease and increased tuber yield by establishing a high relative abundance of beneficial bacteria in the rhizosphere.

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Section: Resultsmentioning

confidence: 84%

A Rhizosphere-Derived Consortium of Bacillus subtilis and Trichoderma harzianum Suppresses Common Scab of Potato and Increases Yield

Wang

Zhuang

et al. 2019

Computational and Structural Biotechnology Journal

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“…To overcome these problems, biocontrol agents were used as alternative strategies because they were antagonists and left no harmful residual effects (Raaijmakers et al, 2002;Hyder et al, 2020;Bashir et al, 2020). Traditionally, common scab disease has been controlled by using fungicides like Ridomil and Rhizolex under in vitro and in vivo conditions (Hosny et al, 2014). Efforts have also been made to control this disease by seed treatment with chemical fungicides like fluazinam, mancozeb, and benzothiazole (Santos-Cervantes et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

A Perspective on Common Scab (Streptomyces scabiei) Disease Management Strategies in Potato Crop

Rehman

Sandhu

Alam

et al. 2021

Int. J. Phytopathol.

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Potato common scab (CS), caused by Streptomyces scabiei, and is a major potato disease that causes deep pitted lesions on the surface of the tuber. The market value and quality of tubers with CS are reduced, resulting in significant economic losses to potato growers. Traditional control strategies such as irrigation and reduced soil pH help to reduce CS but are not efficient methods. Celest® 100 FS (Fludioxanil), Emesto® 24% FS (Penflufen) and Bio magic® (Bacillus subtilis) were tested on CS in this study. A disc diffusion method was used to evaluate the efficacy of these products under in vitro conditions at three different concentrations: 100 ppm, 200 ppm, and 300 ppm. After 7 days, results showed that Bio Magic was the most effective at reducing the growth of Streptomyces scabiei, followed by Emesto 24 FS and Celest 100 FS at 300 ppm. The maximum inhibition percentage by Bio Magic was 45.05%, followed by Celest 100FS at 38.38% and Emesto 24FS at 31.47%. In greenhouse experiments, Celest 100FS treated potato tubers produced the highest yield of 2250g per pot (10" x 10" inch), followed by Bio Magic at 2000g, Emesto 24FS at 1850g, and the non-treated control at 1300g.The data indicated that Celest 100FS provided the best control of CS in greenhouse trials.

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“…Consequentemente, na maioria das vezes, o produtor acaba utilizando alternativas de aplicação de produtos químicos (D' AGOSTINO & MORANDI 2009). O controle baseado em tratamentos químicos é visto como um dos métodos mais efetivos para a sarna da batata, no entanto, nenhum produto químico com total eficácia está disponível no mercado (HOSNY et al 2014). O emprego de controle químico de Streptomyces é citado em diversos trabalhos, porém, além da relação custo/benefício, os compostos químicos utilizados apresentaram variação no seu grau de eficácia (RODRIGUES NETO et al 2008).…”

Section: G) Controle Químicounclassified

Streptomyces spp.associadas à sarna da batata

Destéfano¹,

Vitor²,

Corrêa³

et al. 2021

RAPP

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A sarna da batata, de ocorrência generalizada nas principais regiões produtoras do Brasil e do mundo, é considerada como uma das doenças bacterianas mais importantes que afetam a cultura. Sua incidência vem aumentando, tornando-se um fator limitante na produção da batata no Brasil. A sarna é causada por diferentes espécies do gênero Streptomyces, sendo S. scabiei a espécie mais amplamente distribuída. Os sintomas se caracterizam por lesões superficiais ou profundas que podem afetar toda a superfície do tubérculo, acarretando diminuição do seu valor comercial e até mesmo impedindo a sua comercialização. Os mecanismos de patogenicidade de Streptomyces são considerados altamente evoluídos, e diferentes fatores de patogenicidade estão envolvidos nos processos de penetração, colonização e evasão do sistema de defesa da planta, como a fitotoxina taxtomina A, a proteína necrogênica Nec1 e a enzima tomatinase. Entretanto, algumas espécies fitopatogênicas causadoras da sarna não produzem taxtomina, nem a proteína Nec1, indicando que outras vias metabólicas estão envolvidas na patogenicidade dessas espécies. Considerando os fatores favoráveis ao desenvolvimento da doença, diferentes estratégias de controle podem ser adotadas, a fim de se reduzir a incidência e severidade da sarna. Medidas de controle como plantio de cultivares resistentes, certificação de batata-semente, tratamento dos tubérculos antes do plantio e controle químico ou biológico têm sido empregadas. Entretanto, ainda não há um método com total eficácia. Nesta revisão, serão apresentados e discutidos aspectos relevantes sobre o histórico da sarna da batata, etiologia, ciclo de vida do patógeno, distribuição mundial, determinantes de patogenicidade, medidas de manejo e técnicas de identificação do agente causal.

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Chemical control of potato common scab disease under field conditions

Cited by 20 publications

References 17 publications

A Rhizosphere-Derived Consortium of Bacillus subtilis and Trichoderma harzianum Suppresses Common Scab of Potato and Increases Yield

A Rhizosphere-Derived Consortium of Bacillus subtilis and Trichoderma harzianum Suppresses Common Scab of Potato and Increases Yield

A Perspective on Common Scab (Streptomyces scabiei) Disease Management Strategies in Potato Crop

Streptomyces spp.associadas à sarna da batata

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