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Variação do DH e da ETp dos 20 postos pertencentes à Zona Apta ao cultivo da pitangueira para anos secos.
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The present work had as objective to carry through the agroclimatic zoning of the culture of surinam cherry in the state of Pernambuco. They had been used given average annual of minimum and maximum pluvial precipitation and pertaining temperatures of air the 201 climatologic station located in the main representative cities of the regions of the S...
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The present work had as objective to carry through the agroclimatic zoning of the culture of surinam cherry in the state of Pernambuco. They had been used given average annual of minimum and maximum pluvial precipitation and pertaining temperatures of air the 201 climatologic station located in the main representative cities of the regions of the S...
Among the meteorological variables that make up the calculation of the water balance, we have a highlight for the relative humidity, and with measurements of point form can be transformed into continuous fields using spatial interpolation methods. The objective of this work was to evaluate the power of the Inverse Distance Power (IDP) in the spatia...
Among the meteorological variables required for the calculation of the water balance are the temperatures, which present a continuity in the quantitative distance and thus allow in a simpler way the creation of continuous fields using spatial interpolation methods. The objective of this work was to evaluate the power of the Inverse Distance Power (...
Citations
... Esses resultados corroboram com estudos realizados por Silva et al. (2010) A precipitação pluvial do município de Águas Belas, apresentou médias ao longo da série histórica de 610 mm ano -1 , resultados esses condizentes a média da região do Agreste conforme citado por Oliveira e Silva (2016), que oscilam de 600 a 800 ano -1 . Já para Silva et al. (2011) as precipitações do município é entorno de 400 a 600 mm, sendo considerada como uma região de déficit hídrico moderado. ...
The semi-arid region of the Northeast is strongly marked by climatic extremes such as high temperature and large space-time variability of precipitation, being of vital importance the knowledge of the behavior of these factors to potentiate agricultural production in the rainforest in the region. The objective of this study was to analyze the precipitation behavior of Águas Belas, Agreste de Pernambucano. In order to do so, historical rainfall data were used for the period from 1921 to 2014, totaling 93 years, followed by an evaluation of the data series on a monthly and / or annual scale, and subsequently adjusted a trend curve for observation of rainfall behavior. The data was manipulated in the Microsoft® Excel program. When analyzing the data, they showed that over the years a monthly average of 50 mm year-1, with the rainy months from March to July presenting a strong tendency, being its maximum in the month of May (99 mm year-1), and with periods of drought from September to January, with minimum events in the month of October (13 mm year-1). The local precipitation of Águas Belas municipality is susceptible to cyclical seasonal fluctuations every 17 hydrological years, with predominance of dry periods from September to January and rainy from March to July.
... Diante do avanço tecnológico tornou-se possível fazer revisões antecipadas do regime pluviométrico de determinada região, e com o auxílio do zoneamento agroclimático saber se uma cultura terá ou não sua viabilidade no ano previsto, de modo que o produtor possa decidir ou não sua implementação (SILVA et al., 2011). Silva et al. (2013) defendem que a elaboração, mais a disponibilização de mapas de aptidão climática para culturas, os denominados de zoneamentos climáticos fornecem importantes ferramentas para futuras recomendações práticas, coerentes de serem executadas para o estabelecimento dos cultivos, prevenção e controle das doenças, que servirão de base para a construção de políticas públicas destinadas ao setor agrícola. ...
The aim of this study was to perform the agroclimatic zoning of crops of economic and cultural importance to indigenous communities that survive in the Brazilian semiarid northeast, considering three scenarios of precipitation obtained using the technique of quantile, in order to support the selection of favorable sites for these crops. Climatic data from 169 localities were used, of which 52 with a series above 30 years of observations. Based on climatic data of air average temperatures and rainfall according to dry, normal or rainy scenarios, climatic water balances were calculated, using Thornthwaite (1948) methodology. With the water balance data, the extrapolation to the entire area considered was made. Analyzing each rainfall scenario, it was observed that, in the dry scenario, all areas of indigenous reserves showed unsuitable climate due to marked water shortage bean crop; in the normal scenario, all areas were also classified with moderate suitability for cassava crop; and for the rainy scenario, all areas showed a very long rainy season for maize. © 2017, Universidade Estadual Paulista - UNESP. All rights reserved.
... Several meteorological variables are required to determine the environment condition patterns in which a culture adapts itself, comprising temperature and hours of light needed for its development. Agricultural zoning is one of the most precise tools to estimate adaptation involving climate (SILVA et al., 2011). However, techniques in protected culture to monitor and decide the best climate condition of the instance should be used especially when the crop is cultivated for its high economical value. ...
1 ABSTRACT The fuzzy logic accepts infinite intermediate logical values between false and true. In view of this principle, a system based on fuzzy rules was established to provide the best management of Catasetum fimbriatum. For the input of the developed fuzzy system, temperature and shade variables were used, and for the output, the orchid vitality. The system may help orchid experts and amateurs to manage this species. " Low " (L), " Medium " (M) and " High " (H) were used as linguistic variables. The objective of the study was to develop a system based on fuzzy rules to improve management of the Catasetum fimbriatum species, as its production presents some difficulties, and it offers high added value.
... Estima-se que o Brasil seja o maior produtor mundial de frutas de pitanga, com destaque para o Estado de Pernambuco, com cerca de 300 ha cultivados e produção entre 1.300 e 1.700 t ano -1 , o que significa uma produtividade em torno de 5 t ha -1 (SANTOS et al. 2002;SILVA, 2006). Embora a pitangueira apresente grande potencial produtivo e econômico para a fruticultura brasileira, ainda são escassas as pesquisas direcionadas ao manejo produtivo dessa cultura (SILVA et al., 2011). ...
A adubacao e uma pratica extremamente importante na melhoria da fertilidade do solo, possibilitando aumento no potencial produtivo da cultura da pitangueira. Objetivou-se avaliar o comportamento produtivo e a qualidade quimica de frutos de pitangueira, em solo fertilizando com humus e nitrogenio, em condicao de irrigacao com agua salina. O experimento foi conduzido em um pomar de pitangueira plantadas no espacamento de 2 x 4 m. Os tratamentos foram distribuidos em blocos ao acaso, com quatros repeticoes e uma planta por parcela, utilizando o arranjo fatorial 5 x 2, referentes a cinco niveis de humus (0; 2,5; 5,0; 7,5 e 10 L planta -1 ) e dois niveis de nitrogenio no solo, sem e com nitrogenio, aplicado na forma de ureia. Durante a colheita, os frutos foram contados e pesados para obtencao dos valores de producao e produtividade; no pico da colheita, foram separados, aleatoriamente, 100 frutos de cada planta em completo estagio de maturacao, determinando-se as seguintes caracteristicas quimicas: vitamina C, acidez titulavel e solidos soluveis totais. A fertilizacao com humus elevou a producao, produtividade e a qualidade quimica dos frutos, mas com superioridade nos tratamentos com a presenca de nitrogenio na forma de ureia. Os melhores resultados de producao e qualidade foram evidenciados nos tratamentos com a aplicacao de N combinado a dose de 7,5 litros de humus por planta.
This study aimed to realize the agroclimatic zoning of Jathopra curcas L. crop in the State of Pernambuco. For this, climatic data of air temperature and mean rainfall of 146 meteorological stations and 73 series with historical data over 30 years and another 73 with less than 30 years but more than 20 years of observations were used. The choice of Jatropha has been motivated by the potential of this crop as a source of renewable energy to replace fossil fuels as well as for its rusticity and a new option for regions of semi-arid climate, as it occurs in the Northeast region. The selection of the study area is related to climate variability in the State and the potential that this crop has in regions where there is low precipitation. According to the study, the State of Pernambuco has 14.92% of areas suitable for production of Jatropha, 44.26% of the restricted areas by water deficit, and 40.82% of unsuitable areas.
To know the weather from year to year is of great value to a proper agricultural planning. The study was conducted in the State of Pernambuco, with data basis of temperature and rainfall of at least 20 years of observations of 45 meteorological stations. The function of density probability of the incomplete gamma distribution was used to evaluate the occurrence of dry, normal and rainy years. The monthly climatic water balance was estimated by the method proposed by Thornthwaite and Mather (1955) and interpolation of data for the plot was made using the Kriging method. The results indicated that the highest rainfall occurred in the Zone da Mata in the south of the State with around 2800 mm year-1. The water excess presented its highest levels in the Zona da Mata mesoregion with availability of nearly 1200 mm year-1 for the rainy years and water deficit was higher in the Sertão Mesoregion of Sertão of San Francisco reaching 1000 mm year-1 , being required full irrigation for the crops.
Knowing the annual climatic conditions is of great importance for appropriate planning in
agriculture. However, the systems of climatic classification are not widely used in agricultural
studies because of the wide range of scales in which they are used. A series with data from 20
years of observations from 45 climatological stations in all over the state of Pernambuco was
used. The probability density function of the incomplete gamma distribution was used to evaluate the occurrence of dry, regular and rainy years. The monthly climatic water balance
was estimated using the Thornthwaite and Mather method (1955), and based on those
findings, the climatic classifications were performed using the Thornthwaite (1948) and
Thornthwaite and Mather (1955) for each site. The method of Kriging interpolation was used
for the spatialization of the results. The study classifications were very sensitive to the local
reliefs, to the amount of rainfall, and to the temperatures of the regions resulting in a wide
number of climatic types. The climatic classification system of Thornthwaite and Mather
(1955) allowed efficient classification of climates and a clearer summary of the information
provided. In so doing, it demonstrated its capability to determine agro climatic zones.
