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| Registros recuperados: 60 | |
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| Arai,Fabiane K.; Pereira,Silvio B.; Gonçalves,Geula G. G.. |
| The quantitative knowledge of hydrological parameters (rainfall and flow) and their spatial and temporal variability on the regions or basins should be understood as essential to the efficient planning and management of water resources. Because the Ivinhema Basin, located in the state of Mato Grosso do Sul, Brazil, represents an important inductor on the region agricultural development, characterized as a major producer of grains and meat, it was used to characterize the hydrological study. Knowing the rainfall, flow and drainage area of each of the studied affluent, it was calculated the proportion of contribution of the affluent. To that end, it was proposed the concepts of potential and real contributions, aiming to identify the proportion of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: River discharge; Water resources; Rainfall. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000300018 |
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| Bazira, E.. |
| In East Africa (Uganda, Kenya and Tanzania) agriculture sector employs over 80% of the work force and export earnings from the sector constitute a major part of the national budgets. Subsistence farming is the major source of food. However food shortages as well as negative impacts on several sectors of the economies have been attributed to the seasonal weather variations among other factors. Therefore, the objective of this study was to determine the Long-Range prediction potential of seasonal rainfall as derived from SST modes of the neighboring oceans. |
| Tipo: Conference Material |
Palavras-chave: Sea surface temperature; Rainfall. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/550 |
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| CADAVID GARCIA, E. A.. |
| O Pantanal Mato-grossense e uma planície de 139.111 km2, com altitude de 80 a 150 m e declividade de 2,5 a 5,0 cm.km-1 no sentido Norte-Sul. O clima da região e o resultado da localização geográfica tropical, do relevo e de esporádicas massas de ar frio do Sul do Pais. O regime pluviométrico e de verão e apresenta algumas variações quanto a intensidade e distribuição no ano, estimando-se, para o norte (Cáceres, MT), concentração de 82,4% nos meses de outubro a marco, com valores médios da chuva de 1.262 +_ 200 mm. Na parte intermediaria do Pantanal (Corumbá, MS), observa-se concentração menor (77,3% na Fazenda Nhumirim), com altura pluvial media de 1.022 +_ 113 mm. O "período de recorrência" das pluviométricas também apresenta variações entre sub-regiões.... |
| Tipo: Folhetos |
Palavras-chave: Climatologia agricola; Mato Grosso do Sul; Periodo de retorno; Rainfall; Flood; Cycles; Clima; Chuva; Enchente; Temperatura; Pantanal; Climate; Temperature. |
| Ano: 1984 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787712 |
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| Carvalho-Leandro,Danilo de; Ribeiro,Ana Lúcia Maria; Rodrigues,Jorge Senatore Vargas; Albuquerque,Cleide Maria Riberiro de; Acel,Anagela Maria; Leal-Santos,Fábio Alexandre; Leite Jr,Diniz Pereira; Miyazaki,Rosina Djunko. |
| This study aimed at registering and monitoring the presence of Aedes aegypti in the University Hospital Júlio Muller, Cuiabá-MT, as well as investigating the influence of temperature and rainfall on its temporal distribution and egg densities in ovitraps. The study was performed from April/2007 to March/2008, utilizing ovitraps with 10% of hay infusion and a wood paddle as an oviposition substrate. For surveillance, one ovitrap was placed in each of the 12 points distributed throughout the hospital. Ovitraps were collected monthly at the end of a 5-day installation period. After egg counting, wood paddles were immersed in water to allow larval eclosion for species identification through optical microscopy. Egg Density Index (EDI), Positive Ovitraps Index... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Monitoring; Ovitraps; Rainfall; Temperature. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000400025 |
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| Costa,Juliane S. P.; Mantai,Rubia D.; Silva,José A. G. da; Scremin,Osmar B.; Arenhardt,Emilio G.; Lima,Andressa R. C. de. |
| ABSTRACT Single or split nitrogen (N) supply can maximize the expression of wheat yield indicators. The objective of the study was to evaluate the greater N use efficiency on wheat yield indicators by the single and split N supply under favorable and unfavorable year conditions to the crop in succession system of high and reduced residual N release. The study was conducted in 2014 and 2015, in a randomized complete block design with four replicates in a 4 x 3 factorial, for N-fertilizer doses (0, 30, 60, 120 kg ha-1) and supply forms [full dose (100%) in the phenological stage V3 (third expanded leaf); split dose (70 and 30%) in the phenological stages V3/V6 (third and sixth expanded leaves, respectively) and; split dose (70 and 30%) in the phenological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Urea; Residual N; Temperature; Rainfall. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000100016 |
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| de CARVALHO,Denisar Paggioli; de OLIVEIRA,Harley Nonato. |
| Physic nut (Jatropha curcas L.) is an oilseed, semi-evergreen shrub or small tree of the Euphorbiaceae family, whose seeds contain oil that can be processed into a high quality biofuel. However, there have been reports of arthropods feeding from its leaves, including the green leafhopper Empoasca sp. (Hemiptera: Cicadellidae). The large numbers of this insect, observed in certain periods of the year in many regions of Brazil, are causing damage to the oilseed crops. This study aims at evaluating the fluctuation in green leafhopper population in a physic nut crop in Dourados, Mato Grosso do Sul, to assess possible correlations with rainfall, maximum, average and minimum temperatures. This evaluation was conducted between March 2011 and July 2012. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jatropha curcas; Green leafhopper; Rainfall; Seasonality. |
| Ano: 2016 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2016000100008 |
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| Echer,Fábio Rafael; Rosolem,Ciro Antonio. |
| Most of Brazilian cotton is produced in regions where annual rainfall exceeds 1,500mm, hence plant growth regulators (PGR) may be washed from the leaves before being absorbed. The objective of this research was to evaluate mepiquat chloride and chlormequat chloride washing from cotton leaves by rains occurring at different moments post spraying. The experiment was conducted in a greenhouse. Both PGR were sprayed to cotton at pin-head square at 15g ha-1 a.i. with and without a silicon-based adjuvant, and simulated rains were applied at 0, 0.75, 1.5, 3.0, 6.0, 12.0 and 24 hours after spraying, plus a control without rainfall. Addition of silicon adjuvant increased PGR uptake. Rainfall occurring up to 24 hours after spraying resulted in some PGR loss from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum; Plant height; Mepiquat chloride; Chlormequat Chloride; Rainfall. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012001200006 |
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| Garcia,Beatriz Ibet Lozada; Sentelhas,Paulo Cesar; Tapia,Luciano Roberto; Sparovek,Gerd. |
| Potato is an important crop for Venezuelan agriculture. However, its production is highly affected by late blight (Phytophtora infestans), since weather is commonly favorable for this disease. The aim of this study was to determine the sowing dates of low climatic risk for potato late blight in the Andes region of Venezuela, with an agrometeorological disease model and geographical information system (GIS) tools. The disease model used in this study was developed by Hyre (1954) which requires daily rainfall and temperature data which were obtained from 106 weather stations, located at the States of Mérida, Táchira, and Trujillo, for a period of 31 years. Hyre's model was applied for all stations obtainig the following variables: number of disease favorable... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytophtora infestans; Hyre's model; Temperature; Rainfall. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000700007 |
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| Geyser, Mariette; Louw, Andre; Botha, L.. |
| Lending and financial institutions have looked for a variety of ways to expand their portfolios into agriculture, but because of the risks associated with lending to farmers who lack traditional forms of collateral, they face price and yield risks, causing these inroads to be limited. Market-based instruments are readily available for price risk. Organised exchanges offering the most basic of these instruments, futures and options, have operated for a long time, providing transparency to the market and low-cost risk transfer tools for those able to access them. While the use of price risk management instruments is an incomplete solution, it has sufficient merits on its own and will make the overall burden of risk more bearable. The use of these instruments... |
| Tipo: Journal Article |
Palavras-chave: Geographic diversification; Contract grower; Risk; Lending; Rainfall; Yield; Agricultural Finance. |
| Ano: 2009 |
URL: http://purl.umn.edu/49163 |
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| Registros recuperados: 60 | |
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