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| Souza,Adilson P. de; Escobedo,João F.; Dal Pai,Alexandre; Gomes,Eduardo N.. |
| It was evaluated the annual evolution of global, direct and diffuse components of incident solar radiation on tilted surfaces to 12.85, 22.85 and 32.85º, facing north, in Botucatu, state of São Paulo, Brazil. The radiometric fractions were obtained for each component of the radiation in the aforementioned surfaces, through the ratio with the global and top of the atmosphere radiations. Seasonality was evaluated based on monthly averages of daily values. The measures occurred between 04/1998 and 07/2001 at 22.85º; 08/2001 and 02/2003 at 12.85º; and from 03/2003 to 12/2007 at 32.85º, with concomitant measures in the horizontal surface (reference). The levels of global and direct radiation on tilted surfaces were lower in summer and higher in the equinoxes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solar energy; Clearness index; Atmospheric transmissivity; Climatic conditions. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000200005 |
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| WREGE,MARCOS SILVEIRA; FAORO,IVAN DAGOBERTO; HERTER,FLÁVIO GILBERTO; PANDOLFO,CRISTINA; ALMEIDA,IVAN RODRIGUES DE; ALBA,JOSÉ MARIA FILIPPINI; PEREIRA,JOSÉ FRANCISCO MARTINS. |
| ABSTRACT Pear is among the fruits of major commercial interest in the world and one of the most imported in Brazil. Brazilian production is very small and the fruit quality is low, due to production problems. The success of culture in the country, among other factors, may be linked to the choice of cultivars, pollinating and rootstocks better adapted to local conditions, and thus depend on the particulars of an agricultural zoning. The aim of this study was to identify, in southern Brazil, homogeneous climatic zones with potential for growing of European and Asian pears, through climate risk studies. The regions were defined by the seasonal availability of chilling hours (<7.2 °C) accumulated during the period from May to September and the monthly risk... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural zoning; Pyrus communis L.; Pyrus pyrifolia L.; Reduction of climatic risks; Adapted cultivars; Climatic conditions. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000200703 |
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| Silva, Alessandra Fagioli da; Oliveira, Rone Batista de; Gandolfo, Marco Antonio. |
| Spraying practices are highly sensitive to variations in climatic conditions, so it the spatial variability of the number of monthly hours available for the application of pesticides in the state of Paraná, Brazil, was determined and analyzed. An hourly time series of the climatic data obtained from 54 meteorological stations from the Paraná, for the years 2004-2014 was analyzed. To determine the number of monthly hours available to perform the applications, the following conditions were established: temperature < 30°C, relative air humidity > 55%, wind speed between 3 and 12 km h-1, and rainfall less than 0.2 mm h-1. After being cross-referenced, these data were analyzed using descriptive statistics and geostatistics. A high variability of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.02.05-2 application technology; Spraying; Climatic conditions; Geostatistics. Tecnologia de aplicação; Condições climáticas. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39421 |
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| Silva, Alessandra Fagioli da; Oliveira, Rone Batista de; Gandolfo, Marco Antonio. |
| Spraying practices are highly sensitive to variations in climatic conditions, so it the spatial variability of the number of monthly hours available for the application of pesticides in the state of Paraná, Brazil, was determined and analyzed. An hourly time series of the climatic data obtained from 54 meteorological stations from the Paraná, for the years 2004-2014 was analyzed. To determine the number of monthly hours available to perform the applications, the following conditions were established: temperature < 30°C, relative air humidity > 55%, wind speed between 3 and 12 km h-1, and rainfall less than 0.2 mm h-1. After being cross-referenced, these data were analyzed using descriptive statistics and geostatistics. A high variability of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Application technology; Spraying; Climatic conditions; Geostatistics.; Tecnologia de aplicação; Condições climáticas. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39421 |
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| CHAMBÓ,EMERSON D.; OLIVEIRA,NEWTON T.E. DE; GARCIA,REGINA C.; DUARTE-JÚNIOR,JOSÉ B.; RUVOLO-TAKASUSUKI,MARIA CLAUDIA C.; TOLEDO,VAGNER A.. |
| In this study, performed in the western part of the state of Paraná, Brazil, two self-fertile hybrid commercial rapeseed genotypes were evaluated for yield components and physiological quality using three pollination tests and spanning two sowing dates. The treatments consisted of combinations of two rapeseed genotypes (Hyola 61 and Hyola 433), three pollination tests (uncovered area, covered area without insects and covered area containing a single colony of Africanized Apis melliferahoneybees) and two sowing dates (May 25th, 2011 and June 25th, 2011). The presence of Africanized honeybees during flowering time increased the productivity of the rapeseed. Losses in the productivity of the hybrids caused by weather conditions unfavorable for rapeseed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apis mellifera; Brassicaceae; Climatic conditions; Pollinators. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000402087 |
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