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| Registros recuperados: 139 | |
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| CAMPOS, I. S.; GOMES, T. C. de A.; PAZ, F. das C. A.. |
| A doença conhecida como Meia do Feijoeiro", causada pelo fungo de solo (Thanatephorus cucumens), é um dos fatores limitantes da cultura do feijão (Phaseolus vulgaris) na região amazônica. A produtividade obtida no Estado do Acre, nos últimos anos, não ultrapassou 600 Kg/ha. Nesta região, as lavouras tradicionalmente implantadas na segunda quinzena de março e início de abril, geralmente, são atacadas pela "Mela» com perda total da produção. Mesmo quando as plantas chegam a frutificar, os grãos são danificados pela doença. Agricultores que plantam um pouco mais tarde, conseguem colheitas razoáveis. Entretanto, o plantio tardio tem provocado muitas perdas devido a falta de chuvas por ocasião da floração do feijão. Com o impacto da chuva o fungo presente no... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Mela do feijoeiro; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Paja de arroz.; Marchitez; Enfermedades y desórdenes de las plantas; Cero labranza; Frijoles; Feijão; Phaseolus vulgaris; Plantio direto; Palha de arroz; Doença de planta; Fungo; Thanatephorus cucumeris; Beans; No-tillage; Rice straw; Plant diseases and disorders; Fungi; Blight.. |
| Ano: 1990 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492178 |
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| Sautter,Klaus Dieter; Santos,Honório Roberto dos; Ribeiro Júnior,Paulo Justiniano. |
| This work had as objective to compare the communities of Sminthuroidea and Onychiuridae (Collembola) among no-tillage in three fertility levels, conventional tillage and a natural ecosystem (native grassland). In the conventional tillage and in the no-tillage in area of medium fertility, the community of Sminthuroidea had regular fluctuation along the period of the experiment, but wtth low densities. The no-tillage in area of high fertility presented a populational pick in the autumn; the no-tillage in area of low fertility, in the spring; and, the natural ecosystem, in the summer. As the final mean density of the population of Sminthuroidea, was observed that the no-tillage in area of low fertility went numerically superior to the others, proceeded by the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Collembola; Onychiuridae; Sminthuroidea; No-tillage; Conventional tillage. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000100007 |
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| Bayer,Cimélio; Dick,Deborah Pinheiro; Ribeiro,Genicelli Mafra; Scheuermann,Klaus Konrad. |
| Land use and soil management may affect both labile and humified soil organic matter (SOM) fractions, but the magnitude of these changes is poorly known in subtropical environments. This study investigated effects of four land use and soil management systems (forest, native pasture, and conventional tillage and no-tillage in a wheat/soybean succession) on (i) total soil organic carbon (SOC) stocks (0 to 250mm depth) and on (ii) carbon (C) stocks in labile (coarse, light) and humified (mineral-associated, humic substances) SOM fractions (0 to 25mm depth), in a Hapludox soil from southern Brazil. In comparison to the adjacent forest site, conventionally tilled soil presented 36% (46.2Mg ha-1) less SOC in the 0 to 250mm depth and a widespread decrease in C... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil organic matter; Physical fractionation; Light fraction; Coarse fraction; No-tillage. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782002000300006 |
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| Chocorosqui,Viviane R.; Panizzi,Antônio R.. |
| Results of field evaluations indicated that the neotropical pentatomid Dichelops melacanthus (Dallas) is associated with wheat, Triticum aestivum L. In the no-tillage cultivation system, adults and nymphs were mostly found on the soil, near the plant stems and underneath crop residues of the preceding summer crop, usually soybean, Glycine max (L.) Merrill, or corn, Zea mays L. Wheat grown under the conventional cultivation system showed minimal bug attack. D. melacanthus caused substantial damage to no-tillage wheat plants, particularly to seedlings. Bug attack reduces the number of seed heads of up to 34%. Seed yield was reduced in 31% due to the bugs' feeding, compared to plants free of damage. All developmental phases of the wheat plant were susceptible... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Insecticide; No-tillage; Seed treatment; Stink bug. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000400014 |
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| Silva,Matheus Gustavo da; Arf,Orivaldo; Sá,Marco Eustáquio de; Rodrigues,Ricardo Antônio Ferreira; Buzetti,Salatiér. |
| The adoption of appropriate cultural management, which includes nitrogen fertilization and soil tillage system, is very important to increase the efficiency of plant in the utilization of available resource. This research work was conducted for three years aiming at evaluating the effect of sidedressing nitrogen application (0, 25, 50, 75, and 100 kg ha-1) on winter bean crop under different systems of soil management (conventional, minimal, and no-tillage systems). The experimental design was a randomized block arranged in strips relative to tillage systems, with random distribution of nitrogen doses into each strip, with four replications. Grain yield was affected by nitrogen rates and significant increases were obtained with the application of 75 to 100... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L.; Moldboard plow; Disk harrow; Nitrogen rates; No-tillage. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300012 |
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| Registros recuperados: 139 | |
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