Use of Phosphite Salts in Laboratory and Semicommercial Tests to Control Citrus Postharvest Decay

Cerioni, Luciana; Rapisarda, Viviana Andrea; Doctor, Julie; Fikkert, S.; Ruiz, Teodoro M.; Fassel, R.; Smilanick, Joseph L.

doi:10.1094/pdis-03-12-0299-re

Cited by 24 publications

(27 citation statements)

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“…Alexandre et al (2014) observed the protective effect of potassium phosphite in the control of anthracnose on jilo caused by C. tamarilloi. Cerioni et al (2013) also reported the effect of potassium phosphite in controlling post-harvest rot on citrus caused by P. digitatum. The treatment with ammonium phosphite caused a significant reduction in the value of the diameter of the lesion under ambient atmosphere.…”

Section: Post-harvest Treatment Of Stem End Rot In Papayamentioning

confidence: 99%

“…The effect of the phosphites did not differ significantly between them, all causing a reduction in the diameter of the lesion for increasing doses, under ambient atmosphere and MA (Figure 2). With respect to calcium phosphite, Cerioni et al (2013) found that the treatment of citrus with calcium phosphite followed by inoculation with P. digitatum was highly efficient, although it left a slight residue on the fruit. Naradisorn et al (2006) showed that treatment of strawberry plants with calcium chloride resulted in firmer fruits than those untreated.…”

Section: Post-harvest Treatment Of Stem End Rot In Papayamentioning

confidence: 99%

“…In order to reduce the significant losses caused by post-harvest rots, fungicides such as imazalil, thiabendazole, and prochloraz, are still intensively used (BRASIL, 2016). Nevertheless, the use of phosphites in fruit and vegetables in the post-harvest stage has become a common alternative to the use of fungicides, because these salts exhibit antifungal activity and have no grace period, therefore representing a control tool in the disease management (MILLER et al, 2006;DELIOPOULUS;KETTLEWELL;HARE, 2010;CERIONI et al, 2013;ALEXANDRE et al, 2014;YOUSSEF;ROBERTO, 2014). According to Buffara et al (2013), phosphites exhibit a systemic mode of action, apo-symplastic movement, low toxicity, low cost, and act directly on the fungi.…”

Section: Introductionmentioning

confidence: 99%

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Frequency of Quiescent Fungi and Post-Harvest Alternative Management of Stem End Rot in Papaya

et al. 2017

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-The aim of this study was to evaluate the frequency of quiescent fungi and the effect of phosphites under modified atmosphere on Lasiodiplodia theobromae in papaya. The fruits were treated with a range of doses of phosphites and their actions evaluated under conditions of ambient and modified atmosphere. Of the eight fungal genera found, Lasiodiplodia was the most common. No interaction was observed between the evaluated factors and only atmosphere and dose were independently significant. The usage of phosphites and modified atmosphere reduced the severity of the disease, and did not affect the chemical properties of the fruits.Keywords: Carica papaya. Alternative control. Phosphites. Post-harvest quality. FREQUÊNCIA DE FUNGOS QUIESCENTES E MANEJO ALTERNATIVO DA PODRIDÃO PEDUNCULAR EM MAMÃO NA PÓS-COLHEITARESUMO -O objetivo deste trabalho foi avaliar a frequência de fungos quiescentes e o efeito de fosfitos sob atmosfera modificada sobre Lasiodiplodia theobromae em mamões. Os frutos foram tratados com várias doses de fosfitos e suas ações foram avaliadas em condições de atmosfera ambiente e atmosfera modificada. Dos oito gêneros fúngicos encontrados, Lasiodiplodia sp. foi mais frequente. Não houve interação entre os fatores avaliados e apenas os fatores atmosfera e dose independentemente foram significativos. O uso de fosfitos e atmosfera modificada reduziram a severidade da doença e não alteraram os atributos químicos dos frutos.Palavras-chave: Carica papaya. Controle alternativo. Fosfitos. Qualidade pós-colheita.

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Section: Post-harvest Treatment Of Stem End Rot In Papayamentioning

confidence: 99%

Section: Post-harvest Treatment Of Stem End Rot In Papayamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Frequency of Quiescent Fungi and Post-Harvest Alternative Management of Stem End Rot in Papaya

et al. 2017

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“…Los niveles de eficacia de los fosfitos en el control de enfermedades varían dependiendo del patógeno y del hospedante; por ejemplo, la inmersión de frutos de mandarina (Citrus reticulata Blanco) en soluciones a base de fosfito de calcio y potasio, disminuyó hasta en 50% la incidencia del moho verde de los cítricos originado por Penicillium digitatum (Cerioni et al, 2013); de igual manera en plantas de soya (Glycine max L.) tratadas con fosfito de potasio, la severidad por Peronospora manshurica se redujo en 50% en comparación con las plantas sin tratar (Silva et al, 2011). Abbasi y Lazarovits (2006), reportan una reducción de 80% de plantas de pepino infectadas por Pythium spp., cuando las semillas se trataron por inmersión en soluciones de fosfito de cobre.…”

Section: Introductionunclassified

“…Asimismo, McGrath (2004), menciona que los fosfitos inhiben la fosforilación oxidativa en Oomycetes. También, de forma directa los fosfitos actúan inhibiendo el crecimiento del micelio, la producción y la germinación de esporas en los patógenos (Smillie et al, 1989;Wilkinson et al, 2001;Cerioni et al, 2013).…”

Section: Introductionunclassified

Sales minerales para el control de la cenicilla (Oidium sp.) en pepino

Juárez

Ruvalcaba

Zavaleta-Mejía

et al. 2017

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ResumenSe evaluó el impacto de sales minerales fosfito de potasio (6 mL L -1 ), fosfito de calcio (10 g L -1 ), sulfato de potasio (17 g L -1 ) y nitrato de calcio (20 g L -1 ) en la cenicilla ocasionada por Oidium sp. en el cultivo de pepino. El experimento se estableció en condiciones de invernadero bajo diseño de bloques completos al azar con seis repeticiones por tratamiento. Por siembra directa, las plantas de pepino (Cucumis sativus L.) cv 'Zapata' se hicieron crecer en bolsas de plástico con capacidad de 4.5 kg y sustrato de coco (70% fibra gruesa y 30% fibra fina); cuando las plantas (dos por maceta) tuvieron cinco hojas verdaderas, se aplicaron al follaje soluciones de los tratamientos con un atomizador manual, en cinco ocasiones con intervalos de 7 días. La infección por cenicilla en las plantas se desarrolló de manera natural. Se evaluó la altura de planta, número de hojas, área foliar, verdor foliar, número de hojas enfermas e incidencia y severidad de cenicilla. No hubo diferencia significativa (p≤ 0.05) en las variables altura, área foliar, verdor y número de hojas en las plantas evaluadas. La mayor protección contra cenicilla (Oidium sp.) se obtuvo con las aplicaciones de nitrato de calcio y fosfito de potasio, superando aquella proporcionada por fosfito de calcio y sulfato de potasio. El AbstractThe impact of mineral salts potassium phosphite (6 mL L -1 ) phosphite calcium (10 g L -1 ), potassium sulfate (17 g L -1 ) and calcium nitrate (20 g L -1 ) was assessed on powdery mildew caused by Oidium sp. in cucumber cultivation. The experiment was established in greenhouse conditions under design randomized complete block with six replicates per treatment. The direct sowing, cucumber plants (Cucumis sativus L.) cv 'Zapata' were grown in plastic bags with a capacity of 4.5 kg and coconut substrate (70% coarse fiber and 30% fine fiber); when plants (two per pot) had five true leaves, they were applied to foliage treatment solutions with a manual atomizer, five times at intervals of 7 days. The powdery mildew infection in plants evolved naturally. The plant height, leaf number, leaf area, leaf greenness, number of diseased leaves and incidence and severity of powdery mildew was evaluated. There was no significant difference (p≤ 0.05) in the variables height, leaf area, greenery and number of leaves in plants evaluated. The greatest protection against powdery mildew (Oidium sp.) was obtained with the application of calcium nitrate and potassium phosphite, phosphite surpassing that provided by calcium and potassium sulfate. Calcium nitrate and 1552 Rev. Mex. Cienc. Agríc. Vol.7 Núm. 7 28 de septiembre -11 de noviembre, 2016Moisés Gilberto Yáñez Juárez et al.nitrato de calcio y fosfito de potasio en dosis de 20 g y 6 mL L -1 de agua, respectivamente, constituyen una alternativa para el manejo de la cenicilla en pepino.Palabras clave: Cucumis sativus, fosfito de potasio, nitrato de calcio. IntroducciónEn México, la cenicilla de las cucurbitáceas es una enfermedad foliar común en plantas cultivadas y silvest...

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Inhibition of the lemon brown rot causal agent Phytophthora citrophthora by low‐toxicity compounds

et al. 2020

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BACKGROUND Phytophthora spp., soil‐borne oomycetes, cause brown rot (BR) on postharvest lemons. The management of this disease is based on cultural practices and chemical control using inorganic salts of limited efficacy. In the search for new alternatives, the aim of this work was to evaluate the effect of low‐toxicity compounds to inhibit the growth of P. citrophthora and to control BR disease on lemons. Sodium bicarbonate, potassium sorbate, polyhexamethylene guanidine, Ascophyllum nodosum extract and a formulation containing phosphite salts plus A. nodosum (P+An) were evaluated. RESULTS All tested products inhibited mycelial growth, sporangia formation and zoospore germination of P. citrophthora in vitro. In postharvest applications on artificially inoculated lemons, only P+An exhibited a BR curative effect, with incidence reduction of around 60%. When this formulation was applied in field treatments, BR incidence was reduced by 40% on lemons harvested and inoculated up to 30 days post application. CONCLUSION Our results demonstrate the in vitro direct anti‐oomycete effect of low‐toxicity compounds and the in vivo efficacy of P+An formulation to control BR, encouraging the incorporation of the latter in the management of citrus BR. © 2020 Society of Chemical Industry

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Use of Phosphite Salts in Laboratory and Semicommercial Tests to Control Citrus Postharvest Decay

Cited by 24 publications

References 42 publications

Frequency of Quiescent Fungi and Post-Harvest Alternative Management of Stem End Rot in Papaya

Frequency of Quiescent Fungi and Post-Harvest Alternative Management of Stem End Rot in Papaya

Sales minerales para el control de la cenicilla (Oidium sp.) en pepino

Inhibition of the lemon brown rot causal agent Phytophthora citrophthora by low‐toxicity compounds

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