Severidade da ferrugem da soja em função do suprimento de potássio e cálcio em solução nutritiva

Pinheiro, J. B.; Pozza, Edson Ampélio; Pozza, Adélia Aziz Alexandre; Moreira, Alécio Souza; Alves, Marcelo de Carvalho

doi:10.1590/s0034-737x2011000100007

Cited by 18 publications

(11 citation statements)

References 11 publications

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“…However, if not applied in balance with other cations in the soil, it can compete with Mg 2+ , K + and NH 4+ for the same absorption sites, render the plants deficient in these minerals and unbalance plant nutrition. Studies in this line were carried out in coffee (Garcia Junior et al, 2003), soybean (Pinheiro et al, 2011) and corn (Carvalho et al, 2013).…”

Section: Silicon Influence On the Absorption Of Essential Nutrients Tmentioning

confidence: 99%

Silicon in plant disease control

Pozza

Botelho

2015

Rev. Ceres

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RESUMOSubmitted on 07/20/2014 and aproved on 11/30/2014. 1 Universidade Federal de Lavras, Departamento de Fitopatologia, Lavras, Minas Gerais, Brasil. edsonpozza@gmail.com; deilamagna@hotmail.com 2 Universidade Federal de Lavras, Departamento de Ciência do Solo, Lavras, Minas Gerais, Brasil. adelia.pozza@dcs.ufla.br *Autor para correspondência: edsonpozza@gmail.com Revisão de Literatura Silicon in plant disease controlAll essential nutrients can affect the incidence and severity of plant diseases. Although silicon (Si) is not considered as an essential nutrient for plants, it stands out for its potential to decrease disease intensity in many crops. The mechanism of Si action in plant resistance is still unclear. Si deposition in plant cell walls raised the hypothesis of a possible physical barrier to pathogen penetration. However, the increased activity of phenolic compounds, polyphenol oxidases and peroxidases in plants treated with Si demonstrates the involvement of this element in the induction of plant defense responses. The studies examined in this review address the role of Si in disease control and the possible mechanisms involved in the mode of Si action in disease resistance in plants.Key words: Management, plant diseases, resistance barriers, soil fertility, resistyance inducers. O Silício no controle de doenças de plantasTodos os nutrientes essenciais podem influenciar a incidência e a severidade das doenças de plantas. O silício (Si), embora não seja considerado nutriente essencial para plantas, destaca-se por seu potencial para diminuir a intensidade de doenças em várias culturas. O mecanismo de ação do Si na resistência de plantas ainda não está totalmente esclarecido. A forma de deposição do Si na parede celular de plantas gerou a hipótese de uma possível barreira física, dificultando a penetração do patógeno. No entanto, o aumento da atividade de compostos fenólicos, polifenoloxidases e peroxidases em plantas tratadas com Si demonstra o envolvimento deste elemento na indução de reações de defesa da planta. A presente revisão visa abordar o papel do Si no controle de doenças e os possíveis mecanismos envolvidos no modo de ação do Si na resistência de plantas às doenças.Palavras-chave: Manejo, doenças de plantas, barreiras de resistência, fertilidade do solo, indutores de resistência. 324Edson Ampélio Pozza et al.

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Section: Silicon Influence On the Absorption Of Essential Nutrients Tmentioning

confidence: 99%

Silicon in plant disease control

Pozza

Botelho

2015

Rev. Ceres

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“…Indeed, Pinheiro et al (2011) and Doreto et al (2012) observed that excessive potassium fertilization increased the rust progress. Meanwhile, when this nutrient was balanced supplied with other nutrients, such as calcium, a reduction on soybean rust was recorded.…”

Section: Methodsmentioning

confidence: 99%

“…Several studies have recorded the effects of crop nutrition on rust development (Balardin et al, 2006;Debona et al, 2008;Pinheiro et al, 2011;Doreto et al, 2012). Walters & Bingham.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen doses on soybean growth and Asian rust progress in two cultivars

Ramos

Andriolo²,

Balardin³

et al. 2017

Com. Sci.

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The main goal of this study was to analyze the range of effects of nitrogen doses on Asian soybean rust (Phakopsora pachyrhizi Sydow) progress over two soybean (Glycine max Merril) cultivars. Two experiments were carried out in greenhouse and in the field, during the 2011/12 and 2012/13 crop years. In the greenhouse, plants were grown in sand in 2011/12 and in a mix of sand and soil in 2012/2013, and supplied with five N doses by dripping fertigation. In the field, the crop was fertilized with six nitrogen doses with broadcast applications. The pathogen was inoculated in all experiments. It was assessed the Area Under Rust Progress Curve (AURPC), defoliation, dry matter, total concentration of N in leaves, number of grains per plant, thousand grain weight and yield. In the greenhouse experiment, nitrogen rates increased the plant growth and the disease progress during the first year. In 2011/12 field assay, a slight decrease of rust progress and a slight increase in yield from 160 to 242 kg ha -1 were recorded. However, under favorable environmental conditions for Asian soybean rust, the increases in grain yield obtained by using high N rates on both cultivars were minor than the damage caused by the disease.

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“…Isto é, com o aumento do fornecimento dos nutrientes no solo, houve maior absorção pelas plantas. Pinheiro et al (2011), avaliando a influência de doses de K (0, 150, 300, 450 e 600 mg dm -3 ) e de Ca (0,75,150, 225 e 300 mg dm -3 ), na reprodução do nematoide do cisto da soja (Heterodera glycines), também relataram aumento do teor de K com incremento das doses desse nutriente no solo.…”

Section: Nutriçãounclassified

Adubação nitrogenada e potássica na severidade da antracnose em dois cultivares de milho

et al. 2013

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Nitrogen and potassium fertilization influence on anthracnose severity in two corn cultivarsThe nutritional balance may contribute to increase plant disease resistance. With the aim of evaluating the interaction of nitrogen and potassium fertilization on severity of leaf anthracnose and mineral nutrition of maize, two experiments were installed in a greenhouse using two cultivars of corn, DAS 2B710 (moderately resistant to disease) and BRS 1010 (susceptible). Five doses of N (75, 150, 300, 600 and 1200 mg dm -3 ) and K (63, 125, 250, 500 and 1000 mg dm -3) were applied. The experimental design for each cultivar was completely randomized in a 5x5 factorial scheme, with 25 treatments and four replications. Each vase with four plants consisted of one experimental plot. The dosage of N and K were distributed in 4 applications at intervals of 10 days from sowing, for both cultivars. At 21 days after sowing, plants were inoculated and taken to a moist chamber with photoperiodic treatment of 16 hours in darkness for 3 consecutive days. After the inoculation, the severity was assessed daily for 11 days. At 43 days after sowing, the aerial Recebido para publicação em 02/04/2012 e aprovado em 19/03/2013 1 Engenheiros-Agrônomos, Doutores. Embrapa Milho e Sorgo, Rodovia MG 424, Km 65, Sete Lagoas, Minas Gerais, Brasil.

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Severidade da ferrugem da soja em função do suprimento de potássio e cálcio em solução nutritiva

Cited by 18 publications

References 11 publications

Silicon in plant disease control

Silicon in plant disease control

Nitrogen doses on soybean growth and Asian rust progress in two cultivars

Adubação nitrogenada e potássica na severidade da antracnose em dois cultivares de milho

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