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	Provedor de dados 14 (2) 70 (2) 63 (1) Autor Bassoi,Luís H. (2) Costa,Bruno R. S. (2) Oldoni,Henrique (2) Rocha Junior,Romero C. (2) BALDOVINOTTI, J. A. (1) BERTUCCI-NETO, V. (1) BISCEGLI, C. I. (1) Cruvinel,Paulo Estevão (1) NOVAES, A. P. (1) OCTAVIANO, V. L. de C. (1) Rabello,Ladislau M. (1) Rabello,Ladislau Marcelino (1) Mais... Palavra-chave Agricultural instrumentation (5) Instrumentacao agropecuaria (2) Bovinos (1) Canopy density (1) Diagnostico (1) Documentação (1) EMBRAPA-CNPDIA (1) EMBRAPA-CPPSE (1) Equinos (1) Equipamento (1) Equipment (1) Geostatistics (1) Informacao (1) Intelligent systems (1) Prenhez (1) Producao cientifica (1) Scientific production (1) Signal processing (1) Soil microprobe (1) Soil penetrometer (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Folhetos (1) Livros (1) Ano 2019 (2) 2009 (1) 1998 (1) 1996 (1) País Brazil (5) Idioma Inglês (3) Português (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última DELIMITATION OF HOMOGENEOUS ZONES IN VINEYARDS USING GEOSTATISTICS AND MULTIVARIATE ANALYSIS OF DIFFERENT VEGETATION INDICES 70 Costa,Bruno R. S.; Oldoni,Henrique; Rocha Junior,Romero C.; Bassoi,Luís H.. ABSTRACT Vegetation indices (VIs) are quantitative measures used to describe the distribution and spatial variability of the vegetation cover of natural or cultivated areas. The aim of this study was to delimit homogeneous zones (HZs) of different VIs using geostatistics and multivariate analysis in order to identify vegetation patterns in Cabernet Franc and Cabernet Sauvignon vineyards. The evaluation was performed in two vineyards in the municipality of Espírito Santo do Pinhal in the state of São Paulo, Brazil. Reflectance (ρ) was measured at three wavelengths of the electromagnetic spectrum (670, 730, and 780 nm) at canopy height in georeferenced points along planting rows using the Crop Circle ACS-430 active sensor. Nine VIs were calculated based on... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vitis vinifera L.; Canopy density; Agricultural instrumentation. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000800013 EFFECTS OF SIZE AND SAMPLING GRID ON THE QUALITY OF APPARENT SOIL ELECTRICAL CONDUCTIVITY MAPS 70 Oldoni,Henrique; Costa,Bruno R. S.; Rocha Junior,Romero C.; Rabello,Ladislau M.; Bassoi,Luís H.. ABSTRACT The apparent soil electrical conductivity (ECa) is an attribute commonly used for the characterization of the spatial variability of soil, but its determination by handheld sensors consumes considerable time and labor. The reduction in the number of sampling points allows minimize them but can result in increased uncertainty of interpolated maps. Thus, the goal of this study was to identify the best spacing and number of ECa measurements, to guarantee the quality of maps generated in three vineyards. The ECa values were obtained using a handheld sensor in different sampling grids. The data were submitted to descriptive statistical and geostatistical analyses. The relative deviation and Kappa coefficient of agreement were used to assess the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Spatial variability; Geostatistics; Agricultural instrumentation. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000800001 Instrumentacao agropecuaria: producao de conhecimentos e tecnologias. 14 BALDOVINOTTI, J. A.; OCTAVIANO, V. L. de C.; BERTUCCI-NETO, V.. A pesquisa na Embrapa Instrumentacao Agropecuária. A producao cientifica na Embrapa Instrumentacao Agropecuaria. Documentos gerados por areas de assunto. Tipo: Livros Palavras-chave: Instrumentacao agropecuaria; Producao cientifica; Informacao; Agricultural instrumentation; Scientific production; Documentação. Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/27334 Recomendação sobre o uso do ultra-som para diagnóstico de prenhez de bovinos e eqüinos. 14 NOVAES, A. P.; BISCEGLI, C. I.. O diagnostico da prenhez de bovinos e equinos e de extrema importancia economica, porque viabiliza o descarte dos improdutivos e contribui, dessa forma, para minimizar os custos de producao. A idade do feto que permite o diagnostico influi no manejo do rebanho, onde as femeas prenhez sao separadas em pastos de melhor qualidade, pois representam o componente produtivo do rebanho. Assim, quanto mais cedo ocorrer o diagnostico, maior a oportunidade para dar a esses animais o tratamento adequado. O metodo tradicional de deteccao de prenhez, chamado de toque retal, requer que o perito faca a apalpacao nos cornos uterinos, atraves das porcoes finais do reto, para verificar alteracoes fisiologicas de volume e textura no utero e vesicula amniotica. As alteracoes... Tipo: Folhetos Palavras-chave: Instrumentacao agropecuaria; Ultra-som; Bovinos; Equinos; EMBRAPA-CNPDIA; EMBRAPA-CPPSE; Agricultural instrumentation; Ultrasound; Diagnostico; Equipamento; Prenhez; Equipment. Ano: 1996 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/26390 Intelligent instrument to facilitate decision making in the evaluation of soil resistance to root penetration 63 Rabello,Ladislau Marcelino; Cruvinel,Paulo Estevão. This contribution introduces an instrument for decision-making in agricultural processes based on the measurements and mapping of soil resistance to root penetration. Its development was based on a new and advanced instrumentation tool, enabling in almost real-time to acquire the necessary information for spatial variability analysis of plant root penetration resistance in soils, due to natural or artificial soil compaction processes, i.e., not only for an area of soil but also for a soil profile. The system allows soil resistance assays for both laboratory and agricultural fields. Moreover, the development focused on an intelligent instrumentation concept, as well as a microprobe (30º for the spire angle, 1,6 mm for the base diameter, and 30 mm of total... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural instrumentation; Intelligent systems; Signal processing; Soil microprobe; Soil penetrometer. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000500001 Registros recuperados: 5 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco