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Seleção de cultivares de laranja doce de maturação precoce por índices de desempenho PAB
Caputo,Marina Maitto; Mourão Filho,Francisco de Assis Alves; Silva,Simone Rodrigues da; Bremer Neto,Horst; Couto,Hilton Thadeu Zarate do; Stuchi,Eduardo Sanches.
O objetivo deste trabalho foi selecionar cultivares de laranja doce de maturação precoce, adequadas para o mercado de frutas in natura e para o processamento industrial, por meio de índices de desempenho. Índices de desempenho para citros foram estabelecidos com base em dados coletados em experimento conduzido na região sudoeste do Estado de São Paulo, envolvendo 12 cultivares de laranja doce de maturação precoce. Resultados pioneiros foram obtidos na identificação de cultivares superiores. Em comparação com a laranja 'Hamlin', cultivar padrão de maturação precoce, identificaram-se as laranjas 'Valência 2' e 'Salustiana' com potencial para o mercado de frutas in natura, e a laranja 'Westin', para o processamento industrial.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Citrus sinensis; Características fenotípicas; Índice de seleção; Qualidade do fruto; Seleção simultânea; Sementes.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012001100015
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Polyethylene glycol damages grafted citrus plants based on biometric, physiological,and biochemical responses Rev. Bras. Frutic.
Girardi,Eduardo Augusto; Brandão,Andréa Dias; Coelho,Rubens Duarte; Couto,Hilton Thadeu Zarate do; Buckeridge,Marcos Silveira; Mourão Filho,Francisco de Assis Alves.
Abstract Drought tolerance is a major trait for the selection of citrus rootstocks in breeding programs. PEG 4000 solution at 110 g L-1 (osmotic potential of -376 kPa) was used to evaluate biometric, physiological, and biochemical responses of grafted citrus plants in pots. ‘Valencia’ sweet orange plants grafted onto ‘Rangpur’ lime (drought tolerant) rootstock showed greater plant growth compared to that on ‘Swingle’ citrumelo (drought sensitive) rootstock, regardless of PEG-induced stress; however, biological responses to PEG were similar on both rootstocks. Plant dry weight, gas exchange, and leaf and root starch concentrations were reduced by PEG. Water potential at 2:00 p.m. and Fe and Mn leaf concentrations increased with severe phytotoxic symptoms....
Tipo: Info:eu-repo/semantics/other Palavras-chave: Citrus limonia; Citrus paradisi x Poncirus trifoliata; Osmotic agent; Rootstock; Water deficit.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000601001
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Damage caused by capybaras in a corn Field Scientia Agricola
Ferraz,Katia Maria Paschoaletto Michi de Barros; Lechevalier,Marrie-Anne; Couto,Hilton Thadeu Zarate do; Verdade,Luciano Martins.
Damage caused by capybaras in agroecossystems in Brazil has been frequently observed. The objective of this study was to describe and quantify the actual damage caused by capybaras in a corn field, aiming to get basic information on how, how much, and where these damage occur. Systematic sampling indicated that 26% of the planted area were damaged by capybaras, and the highest percentage of damage occurred on the border of the corn field (t=4.5698, p=0.0001). Damage in areas adjacent to a forest fragment was significantly higher (t=13.6198, p=0.0001), suggesting that the strategy of area utilization for feeding was related to the proximity of the resources "forest" and "water". Avoiding corn plantation in areas adjacent to forest fragments used by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydrochaeris hydrochaeris; GIS; Crop damage; Agroecossystems.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100029
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Are camouflaged seeds less attacked by wild birds? Scientia Agricola
Almeida,Alexandre de; Couto,Hilton Thadeu Zarate do; Almeida,Álvaro Fernando de.
Wheat, corn and rice crops in Brazil use seeds treated with systemic insecticide/nematicide carbofuran, mixed to rhodamine B red dye. Carbofuran is toxic and rhodamine B is attractive to wild birds that eat up these seeds, resulting in notable mortality during planting. A field experiment was performed in southeast Brazil to evaluate if camouflaged seeds would be less consumed by wild birds in comparison to commercial seeds with red-colored rhodamine B and aposematic blue seeds. Camouflaged seeds were less removed than seeds with rhodamine B and natural colors. The camouflaging was more effective in the presence of irregularities and litter. There was no removal of blue-colored seeds. As legislation requires treated seeds to receive a different color to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Seed camouflage; Carbofuran; Rhodamine B; Visual repellents; Bird mortality.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200007
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Camouflaging of seeds treated with pesticides mitigates the mortality of wild birds in wheat and rice crops Scientia Agricola
Almeida,Alexandre de; Couto,Hilton Thadeu Zarate do; Almeida,Álvaro Fernando de.
Seeds used to plant wheat, corn and rice crops in Brazil are treated with the insecticide carbofuran associated with the dye rhodamine B, attracting granivorous birds and causing mortality during sowing. The objective of this study was to evaluate if using camouflaged seeds can minimize mortality caused by the ingestion of seeds with carbofuran. Alternatives for reducing mortality, such as using carbofuran without rhodamine B or replacing carbofuran by carbosulfan, were compared. Three experiments were carried out in regions of known bird mortality in the states of Paraná and São Paulo, Brazil, using conventional sowing over plowed soil in the traditional planting system, 15,896 kg of seeds in 111.46 ha. Bird carcasses were collected and dissected to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zenaida auriculata; Carbofuran; Rhodamine B; Carbosulfan; Gustatory repellents; Environmental impact.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200008
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Composição Florística do estrato arbóreo da Floresta Estacional Semidecidual na Planície Aluvial do rio Doce, Linhares, ES, Brasil Acta Botanica
Rolim,Samir Gonçalves; Ivanauskas,Natália Macedo; Rodrigues,Ricardo Ribeiro; Nascimento,Marcelo Trindade; Gomes,José Manoel Lúcio; Folli,Domingos Antônio; Couto,Hilton Thadeu Zarate do.
Este trabalho apresenta a flora de espécies arbóreas e palmeiras na floresta estacional semidecidual na planície aluvial do rio Doce, uma área de cerca de 20.000 ha, a partir de Linhares (ES) até próximo à foz no oceano atlântico. Foram determinadas 408 espécies (27 classificadas em gênero) e 59 famílias, entre arbóreas e palmeiras. Por meio da análise de agrupamento, foi evidenciado que a floresta do rio Doce é muito semelhante floristicamente à floresta estacional dos tabuleiros terciários, que estas se agrupam com as florestas estacionais do rio Doce em MG e que, por sua vez, todas estas se agrupam com as florestas ombrófilas do sul da Bahia, sendo o conjunto nitidamente separado das outras formações ombrófilas costeiras. Foram encontradas dezenas de...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rio Doce; Floresta atlântica; Floresta de tabuleiro; Composição florística; Cacau.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000300005
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Detectability of capybaras in forested habitats Biota Neotropica
Pinto,Gustavo Romeiro Mainardes; Ferraz,Kátia Maria Paschoaletto Micchi de Barros; Couto,Hilton Thadeu Zarate do; Verdade,Luciano Martins.
Direct count has been commonly used as an abundance index to estimate wildlife population size. However, systematic errors in sample-based estimators are common in sampling animal populations. At this study we aimed to estimate capybara's observability, through a detectability index in forested habitats. Sampling surveys of capybaras population was obtained by direct count (abundance index) and also by complete count (census). The average detectability index of capybaras in forested habitats was 0.63 ± 0.32 for a single observer. The variability in the detectability index among habitats was due to the presence of more or less dense vegetation. This information might be useful for management purposes of the species in the agroecosystems of southeastern...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydrochoerus hydrochaeris; Capybara; Abundance index; Direct count; Detectability index.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000100008
Registros recuperados: 7
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