Relação entre doses de calda bordalesa e de fosfito potássico na intensidade do míldio e na produtividade da videira cv. 'Goethe'

Peruch, Luiz Augusto Martins; Bruna, Emílio Della

doi:10.1590/s0103-84782008000900001

Cited by 23 publications

(15 citation statements)

References 3 publications

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“…However, soil or foliar applications may also be needed in order to totally supply the crop demand for this micronutrient. Moreover, the application of Cu may present advantages in terms of plant's disease management, mainly by controlling certain types of fungal pathogens (Peruch & Bruna, 2008) This research demonstrates that both cuprous oxide and copper oxychloride can be used as maize seed treatment. The formulations did not negatively affect the final seedling emergence and the tissues dry mass, while provided a significant uptake of Cu by plants.…”

Section: Resultsmentioning

confidence: 79%

Uptake of seed-applied copper by maize and the effects on seed vigor

2015

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Seed treatment is a low-cost and efficacious method to deliver a diversity of compounds to field crops. This study evaluated the uptake of seed-applied Cu by maize and the effect on seed vigor. The treatments were composed of a control (untreated seeds) and five dosages of Cu: 0.11, 0.22, 0.44, 0.88 and 1.76 mg Cu seed -1 , applied as cuprous oxide and copper oxychloride formulations. Seedling emergence and the speed of seedling emergence were determined in three periods: 1, 60 and 120 days after Cu application. Evaluations of root and shoot dry mass, Cu tissue concentration and efficiencies of Cu uptake and incorporation were conducted with two-leaf stage maize plants. Seed-applied Cu reduces the speed of maize seedling emergence, while the final emergence percentage is not affected. Shoot dry mass tends to increase with the application of Cu, while there is no interference on root dry mass within the dosages tested. Cu tissue concentration of both roots and shoots increases as higher dosages of Cu are applied to seeds, with higher accumulation in roots. Cuprous oxide promotes higher uptake of Cu by maize roots compared to copper oxychloride.

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Section: Resultsmentioning

confidence: 79%

Uptake of seed-applied copper by maize and the effects on seed vigor

2015

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“…The pathogen was found originally in North America on wild Vitis (Olmo 1986); however, it has since spread across the globe to many countries, including Brazil, by introduction of American vines contaminated with the pathogen (Santos-Neto 1955). Currently, the pathogen is responsible for extreme damages to vineyards without effective crop protection in South Brazil, where the humid climate is especially amenable for the pathogen's life cycle and proliferation (Hamada et al 2008, Peruch andBruna 2008).…”

Section: Introductionmentioning

confidence: 99%

Behavior of grape breeding lines with distinct resistance alleles to downy mildew (Plasmopara viticola)

Sánchez-Mora

Saifert

Zanghelini

et al. 2017

Crop Breed. Appl. Biotechnol.

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“…Verificam-se maiores teores de S em sistemas de produção orgânicos, além da olericultura convencional. A utilização deste elemento é bastante associada à viticultura, inclusive por meio de produtos para proteção fitossanitária, entre as quais se destacam as denominadas "caldas de preparo caseiro", como sulfocálcica ou "bordaleza" (Peruch & Bruna, 2008) podendo ser também o caso do boro (B) cuja viticultura orgânica teve maiores valores. O Mn, por sua vez, apresenta tendência contrária da maior parte dos elementos avaliados com maiores teores nas áreas com mata nativa, apresentando diferenças significativas em relação à viticultura, lavoura e fruticultura em sistemas orgânicos e olerícolas em sistema convencional, provavelmente pela grande adição de nutrientes nesses usos, influenciando o complexo sortivo.…”

Section: Resultsunclassified

Uso da terra e atributos de solos do estado do Rio Grande do Sul

Nascimento

Bissani

Levien

et al. 2014

Rev. bras. eng. agríc. ambient.

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R E S U M OA região da Encosta Inferior do Nordeste, no estado do Rio Grande do Sul, apresenta, na atividade agrícola, variações no tipo de uso do solo e sistemas de produção podendo levar à diferenciação nos atributos do solo e a processos de degradação. Com o objetivo de avaliar a granulometria e os atributos químicos do solo e compará-los em diferentes tipos de uso e manejo 78 glebas foram amostradas com oito diferentes tipos de uso, em sistemas de produção convencional e de base agroecológica (orgânico) entre 2009 e 2010 enquanto amostras de solo foram coletadas na camada de 0 a 20 cm e realizadas determinações de uma série de atributos. Os resultados destacaram, entre outros, o pH, a condutividade elétrica e os teores de zinco e fósforo com maiores valores no uso com olericultura convencional; por sua vez, o enxofre apresentou maiores teores nas áreas de viticultura. A aplicação de análise discriminante indicou que 67% das glebas tiveram enquadramento em seus usos definidos por ocasião da amostragem (originais) e a análise de componentes principais ressaltou maior semelhança entre os tipos de uso em sistema orgânico e na lavoura convencional. Alguns elementos apresentaram teores bastante altos indicando um potencial de contaminação e degradação ambiental. Land use and attributes of soils of the state of Rio Grande do Sul A B S T R A C TLower northeast hillside region, in Rio Grande do Sul state, Brazil, shows, in agricultural activities, variability in soil use and production systems, which can result in change of soil attributes and degradation processes. With the aim to evaluate particle size distribution and chemical attributes and to compare them in different soil use and management system, soil samples from 78 areas, performing eight diverse types of soil use in conventional and organic production systems, were sampled for the study, between 2009 and 2010. Soil samples were collected at 0 to 20 cm depth, and a series of attributes were determined. Results showed pH, electrical conductivity, zinc and phosphorus contents with higher values in areas of conventional vegetable production, while sulphur showed higher values in soil under grape cultivation. Discriminate analysis indicated that 67% of the areas were classified in the same use defined at the time of sampling (original use), and principal component analysis showed more similar behavior among uses in organic system, besides conventional crop. Some elements showed very high contents, indicating potential contamination and environmental risk. Palavras-chave:sistemas de produção produção agroecológica uso e manejo do solo Key words: production systems agroecological production soil use and management Revista Brasileira de Engenharia Agrícola e Ambiental IntroduçãoA busca por sistemas sustentáveis de produção agrícola tem resultado no aumento da adoção de formas de uso e manejo do solo que resultem em menor impacto ambiental, tal como na utilização de indicadores que, em médio prazo, possam contribuir na avaliação da sustentabilidade desses sistemas...

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Relação entre doses de calda bordalesa e de fosfito potássico na intensidade do míldio e na produtividade da videira cv. 'Goethe'

Cited by 23 publications

References 3 publications

Uptake of seed-applied copper by maize and the effects on seed vigor

Uptake of seed-applied copper by maize and the effects on seed vigor

Behavior of grape breeding lines with distinct resistance alleles to downy mildew (Plasmopara viticola)

Uso da terra e atributos de solos do estado do Rio Grande do Sul

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