Bicarbonate solutions control powdery mildew (Leveillula taurica) on sweet red pepper and reduce the development of postharvest fruit rotting

Fallik, Elazar; Ziv, O.; Grinberg, Sarina; Alkalai, Sharon; Klein, Joshua D.

doi:10.1007/bf02981478

Cited by 29 publications

(27 citation statements)

References 11 publications

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“…In fact, the effectiveness of potassium salts in controlling various plant pathogens have been previously reported [18,[36][37][38][39][40]. The mode of action of most salts is postulated to consist in a reduction of fungal turgor pressure that results in the collapse and shrinkage of fungal hyphae causing subsequent inhibition of mycelia growth and sporulation [23,41].…”

Section: Discussionmentioning

confidence: 99%

“…Because most of the literature about potassium salts applications has focused on controlling foliar or postharvest diseases [19,23,80], there is little information on the effects of these salts on the promotion of tomato growth after challenge with soil-borne pathogens such as V. dahliae, FOL and FORL. Hence, important findings from our study revealed that foliar sprays of PS five days before pathogen challenge could enhance more than one tomato growth parameter in more than one pathosystem.…”

Section: Vd Fol Forlmentioning

confidence: 99%

“…In the same manner, foliage spays of sodium or potassium bicarbonates led to decreased powdery mildew severity (Leveillula taurica) in pepper plants [23]. These salts were eventually registered as pesticide ingredients in the USA and as a horticultural fungicide in the UK [19,24] and they exhibit antifungal properties when applied as foliar sprays at concentrations between 5 and 20 g/l [19].…”

Section: Introductionmentioning

confidence: 99%

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Comparative Efficacy of Potassium Salts Against Soil-borne and Air-borne Fungi and Their Ability to Suppress Tomato Wilt and Fruit Rots

Jabnoun‐Khiareddine¹,

Abdallah²,

El-Mohamedy³

et al. 2016

J Microb Biochem Technol

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Section: Discussionmentioning

confidence: 99%

Section: Vd Fol Forlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative Efficacy of Potassium Salts Against Soil-borne and Air-borne Fungi and Their Ability to Suppress Tomato Wilt and Fruit Rots

Jabnoun‐Khiareddine¹,

Abdallah²,

El-Mohamedy³

et al. 2016

J Microb Biochem Technol

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“…En México, son escasos los reportes en el uso de BP y BS como ingredientes pesticidas, sin embargo, la eficacia de estas y otras sales ha sido probada contra hongos fitopatógenos como: Alternaria spp., Aspergillus niger, Botrytis cinerea (Karabulut et al, 2003;Bombelli y Wright, 2006), Colletotrichum gloeosporoides (Sivakumar et al, 2002), Colletotrichum musae (De Costa y Gunawardhana, 2012), Sclerotinia sclerotiorum (Ordoñez et al, 2009), Sclerotium cepivorum (Ortega et al, 2011), Venturia inaequalis ; asimismo, contra otros agentes que originan cenicillas como: Leveillula taurica, Oidium lycopersicum, Sphaerotheca fuliginea, Sphaerotheca fusca y Shaerotheca pannosa (Fallik et al, 1997;McGrath y Shishkoff, 1999;Dik et al, 2003). Por lo que el objetivo del presente trabajo fue determinar la eficacia de bicarbonato de potasio y bicarbonato de sodio en el control de la cenicilla en plantas de pepino.…”

Section: Introductionunclassified

Efecto de bicarbonatos en el control de cenicilla (Oidium sp.) en pepino (Cucumis sativus L.)

Juárez

Tafoya

Ruvalcaba

et al. 2018

Remexca

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, diluidos en 100 litros de agua. Los tratamientos fueron 2, 4 y 6 g L -1 de BP y 2 y 4 g L -1 de BS, mismos que con atomizador manual se aplicaron sobre el follaje hasta el punto de goteo. A los 31, 33 y 35 días después de la primera aplicación (ddpa) se evaluó el número de hojas, número de hojas enfermas, incidencia y severidad de cenicilla en hojas del tallo principal. El número de hojas no fue afectado por los bicarbonatos de potasio o sodio; la mayor disminución de hojas enfermas (94.6, 93.3 y 92.4%) se obtuvo con 4 g L -1 de BP, a los respectivos 31, 33 y 35 ddpa. La máxima disminución (48.4 puntos porcentuales) de incidencia de cenicilla, se observó en plantas con 4 g L -1 de BP (p≤ 0.05); con la misma dosis, la severidad de cenicilla disminuyó hasta 84.3 y 60.5 puntos porcentuales en las hojas tres y cuatro, respectivamente; mientras que en la hoja cinco la enfermedad fue nula. AbstractTo determine the efficacy of potassium bicarbonate (BP) and sodium bicarbonate (BS) in the control of powdery mildew (Oidium sp.) in cucumber plants, an investigation was conducted under greenhouse conditions cultivating plants of cv 'Poinsett 76' in pots with a capacity of 4.5 kg of chromic vertisol soil. Every third day was fertilized with a composed solution of 101 g KNO 3 , 200 g of CaNO 3 , 136 g KH 2 PO and 246 g MgSO 4 , diluted in 100 liters of water. Treatments were 2, 4 and 6 g L -1 of BP water and 2 and 4 g L -1 BS, same as with manual spray applied onto foliage to drip point. At 31, 33 and 35 days after the first application (ddpa) the number of leaves, number of diseased leaves, incidence and severity of powdery mildew on leaves of the main stem was evaluated. The number of leaves was not affected by potassium or sodium bicarbonate; the highest decrease of diseased leaves (94.6, 93.3 and 92.4%) was obtained with 4 g L -1 of BP, at the respective 31, 33 and 35 ddpa. The maximum decrease (48.4 percentage points) of mildew incidence was observed in plants of 4 g L -1 BP (p≤ 0.05); with the same dose, the severity of powdery mildew decreased to 84.3 and 60.5 percentage points in leaves three and four, respectively; while in leaf five the disease was zero. IntroducciónLa cenicilla de las cucurbitáceas, es una enfermedad foliar común en plantas cultivadas y silvestres (Félix et al., 2005;González et al., 2010). Esta enfermedad puede ser originada por Erysiphe cichoracearum o Sphaerotheca fuliginea (Félix et al., 2005;Anand et al., 2008;González et al., 2010;Bojórquez et al., 2012), su presencia en el cultivo usualmente ocurre en la fase asexual (Oidium sp.), y rara vez se observa la fase sexual (McGrath, 2001;Stadnik, 2001). Los síntomas y signos del patógeno aparecen en forma de polvo blanquecino en la superficie de las hojas de plantas afectadas, con el tiempo y por efecto del daño, éstas tienden a marchitarse y mostrar senescencia prematura (Zitter et al., 1996). En el estado de Sinaloa, México, es común observar la presencia de cenicilla infectando plantas de pepino (Félix et al., 2005;Bojórquez et al., 2012),...

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“…This strategy proved to be an unsatisfactory solution for controlling wilt disease in Egypt. Research over the last few decades for alternative substances with fungicidal properties has revealed that a potentially useful component of integrated disease management (IDM) programmes against foliar fungal pathogens can be spray applications (Fallik et al, 1997;Mann et al, 2004;Mitchell and Walters, 2004). Therefore, recently, great attention has been diverted to the use of fungicide alternatives for suppressing plant diseases (El-Mougy, 1995, 2009Siddiqui et al, 2001;El-Gamal et al, 2003;El-Mougy et al, 2004Abd-Alla et al, 2009;Abdel-Kader, 1997;Abdel-Kader et al, 2011Abdel-Kader and El-Mougy, 2014) to decrease human and animal health risk concerns.…”

Section: Introductionmentioning

confidence: 99%

Potential control of beans (Phaseolus vulgaris L.) wilt disease using growth regulators, bioagent, antioxidants and essential oils as foliar application under field conditions

Abdel-Kader¹,

El-Mougy²

2016

Afr. J. Microbiol. Res.

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The efficacy of some fungicide alternatives as foliar spray was evaluated against bean wilt incidence under field conditions. The fungicide alternatives were indole acetic acid, gibberllic acid, Trichoderma harzianum, vitamins E and C, lemon grass, moringa leaf and thyme oils. The obtained results showed that the applied fungicide alternatives treatments could suppress the incidence of green bean wilt. In the light of the present study, a thought-provoking outcome of the following investigation was reached when the results clearly indicate that 100% suppression of the disease was reached when the bean plants were sprayed with a combination of indole acetic acid 40 ppm + gibberellic acid 40 ppm + T. harzianum 10 5 cfu/ml. Such an arrest in disease development decreased to 90.5 and 86.4% when the infected plants were treated with indole acetic acid 20 ppm + gibberellic acid 20 ppm + T. harzianum 10 5 cfu/ml and T. harzianum was combined with gibberellic acid 40 ppm, respectively. It could be hypothetically suggested that combined treatments between growth regulators with the bioagent as foliar spraying might be used practically for controlling such soilborne diseases replacing fungicides treatments.

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Bicarbonate solutions control powdery mildew (Leveillula taurica) on sweet red pepper and reduce the development of postharvest fruit rotting

Cited by 29 publications

References 11 publications

Comparative Efficacy of Potassium Salts Against Soil-borne and Air-borne Fungi and Their Ability to Suppress Tomato Wilt and Fruit Rots

Comparative Efficacy of Potassium Salts Against Soil-borne and Air-borne Fungi and Their Ability to Suppress Tomato Wilt and Fruit Rots

Efecto de bicarbonatos en el control de cenicilla (Oidium sp.) en pepino (Cucumis sativus L.)

Potential control of beans (Phaseolus vulgaris L.) wilt disease using growth regulators, bioagent, antioxidants and essential oils as foliar application under field conditions

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