Potassium phosphite for control of downy mildew of soybean

Silva, O.C.; Santos, Hellen Aparecida Arantes dos; Pria, Maristella Dalla; Mio, Louise Larissa May De

doi:10.1016/j.cropro.2011.02.015

Cited by 60 publications

(46 citation statements)

References 16 publications

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“…These results suggest that the most efficient formulations for maintaining photosynthesis in coffee seedlings under variable temperatures were composed of phosphite formulations. Phosphite application in high rates was related to the increase in leaf aerea index and reduction of infestation in soybean plants infected by downy mildew [24].…”

Section: Resultsmentioning

confidence: 99%

Inductors of Resistance and Their Role in Photosynthesis and Antioxidant System Activity of Coffee Seedlings

Fernandes¹,

Silveira²,

Souza³

et al. 2014

AJPS

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We investigated the effects of formulations based on phosphite products on gas exchange and activity of antioxidant enzymes in coffee plants. Seedlings of the Mundo Novo cultivar were submitted to various treatments composed of different formulations of with potassium phosphite (ADB 120), manganese phosphite (Reforce Mn), and fungicide (PrioriXtra ® ). For coffee seedlings, the combination of potassium phosphite and citrus by-products, isolated or in a combination with other products elicited the antioxidant system. Besides the high activity of antioxidant enzymes, the photosynthetic rates were higher than other treatments. The better performance of coffee seedlings treated with those formulations occurred even in absence of pathogens.

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Section: Resultsmentioning

confidence: 99%

Inductors of Resistance and Their Role in Photosynthesis and Antioxidant System Activity of Coffee Seedlings

Fernandes¹,

Silveira²,

Souza³

et al. 2014

AJPS

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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

“…Al respecto, Sugimoto et al (2005), reportaron que la aplicación preventiva de nitrato de calcio o cloruro de calcio, disminuyó el daño por Phytophthora sojae en plantas de soya (Glycine The levels of effectiveness of phosphites in disease control vary depending on the pathogen and host; for example, immersing fruit of mandarin (Citrus reticulata Blanco) solutions based phosphite calcium and potassium, decreased to 50% incidence green mold of citrus caused by Penicillium digitatum (Cerioni et al, 2013) ; likewise in soybean plants (Glycine max L.) treated with potassium phosphite, Peronospora manshurica severity was reduced by 50% compared to untreated plants (Silva et al, 2011). Abbasi and Lazarovits (2006) report an 80% reduction of cucumber plants infected by Pythium spp., when the seeds were treated by immersion in solutions of copper phosphite.…”

Section: Introductionmentioning

confidence: 99%

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

Juárez

Ruvalcaba

Zavaleta-Mejía

et al. 2017

Remexca

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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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“…The cultivation of proteas is relatively new in the market of ornamental plants for the production of flowers, oomycetes [28] [29]. Also, Mogollón and Castaño [30], showed the effect of potassium phosphite as resistance inductor, when it was applied to the soil to control sigatoka disease caused by M. fijiensis and M. musicola in plantains.…”

Section: Introductionmentioning

confidence: 99%

Effect of Antagonists and Plant Extracts in the Control of Protea Wilt (<i>F. oxysporum</i>)

Granja¹,

Benitez²,

Sanjuanello³

2014

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In laboratory experiments were evaluated TRICHOD ® , FOLIGUARD ® , Trichoderma sp, and watery extracts of pine, marigold and eucalyptus, respectively, against F. oxysporum. There were no significant differences between TRICHOD ® and FOLIGUARD ® . The extract of marigold of 120 g/L was the best result in reducing the area of the colony of F. oxysporum. In field pots experiment were evaluated the extract of marigold (120 g/L), potassium phosphite (400 g/L), TRICHOD and benomyl (1.5 g/L) to control F. oxysporum. Treatments were applied to the soil, 15 days after inoculation with F. oxysporum. The best obtained heights were of 32 cm with extract of marigold 120 g/L, followed by potassium phosphite with 31 cm, and the control reached 26 cm of height. The treatment with an extract of marigold 120 g/L, obtained the best dry weight average of 6.5 g, statistically different from the control. The extract of marigold presented the best efficiency against the disease, because it reduced the length of the vascular symptom in 88.5%; followed by TRICHOD ® , benomyl and potassium phosphite that showed reductions of 86, 85 and 84 percent, respectively.

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Potassium phosphite for control of downy mildew of soybean

Cited by 60 publications

References 16 publications

Inductors of Resistance and Their Role in Photosynthesis and Antioxidant System Activity of Coffee Seedlings

Inductors of Resistance and Their Role in Photosynthesis and Antioxidant System Activity of Coffee Seedlings

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

Effect of Antagonists and Plant Extracts in the Control of Protea Wilt (<i>F. oxysporum</i>)

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Potassium phosphite for control of downy mildew of soybean

Cited by 60 publications

References 16 publications

Inductors of Resistance and Their Role in Photosynthesis and Antioxidant System Activity of Coffee Seedlings

Inductors of Resistance and Their Role in Photosynthesis and Antioxidant System Activity of Coffee Seedlings

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

Effect of Antagonists and Plant Extracts in the Control of Protea Wilt (&lt;i&gt;F. oxysporum&lt;/i&gt;)

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Effect of Antagonists and Plant Extracts in the Control of Protea Wilt (<i>F. oxysporum</i>)