Estudo Comparativo Da Evapotranspiração De Referência Entre Localidades No Estado De São Paulo E Na Província De Habana

Pereira, Francisca Franciana Sousa; Pai, Enzo Dal; Montenegro, Ranses J. Vázquez; Román, Rodrigo Máximo Sánchez; González, Alba María Guadalupe Orellana; Escobedo, João Francisco

doi:10.15809/irriga.2016v21n2p395-408

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…April, May and June were the months with the lowest values (2.7 m s -1 ). This result confirms the study of Pereira et al (2016), who found that June showed the lowest value for maximum wind speed when evaluating the mean monthly data of climatic variables.…”

Section: Resultssupporting

confidence: 91%

Climatic characterization and evaluation of the need for supplementary irrigation for cacao in southern Bahia, Brazil

et al. 2020

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Cacao is a typical plant of a tropical climate and demands ample water. Thus, in periods of water deficit, the need for supplementary irrigation can influence crop development. This study aimed to characterize the climate and evaluate the need for supplementary irrigation for cacao crops in the south of the state of Bahia (Brazil). For this research, historical data (2001-2017) for climate variables were obtained that are available at the weather station of the Executive Commission for Cacao Cultivation Planning (CEPLAC), located in southern Bahia. With the complete database, the monthly values for each variable were calculated and subjected to descriptive statistical analyses. Subsequently, the mean values for rainfall and air temperature were used to calculate potential evapotranspiration. The climatological water balance was then calculated, defining the periods of water deficit and surplus and whether supplementary irrigation was necessary or not, based on the total monthly water deficit. Overall, the region had a favorable climate for the development of cacao. However, this pattern did not continue throughout the historical series of climatic data, which showed temporal discontinuity, especially in February. The main months requiring supplementary irrigation for the cultivation of c hern Bahia were February and December.

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Section: Resultssupporting

confidence: 91%

Climatic characterization and evaluation of the need for supplementary irrigation for cacao in southern Bahia, Brazil

et al. 2020

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“…According to Köppen's classification, the local climate is a Cwa type, which stands for subtropical or tropical of altitude (Pereira et al, 2016). The lowest temperatures were registered during the second experimental quarter, with a thermal sum of 1694ºC ( Figure 1).…”

Section: Methodsmentioning

confidence: 99%

Vegetative Development and Growing Degree-Days of Tropical and Winter Forages

Sanches

Souza²,

Jesus

et al. 2019

Eng. Agríc.

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One of the limitations to producing irrigated forages is setting suitable biometric parameters to establish the entrance of animals to grazing areas. Such parameters can be measured or even estimated. Estimates are advantageous for being practical and able to be used for grazing optimization. This study aimed to evaluate the correlation among growing degree-days (GDD), canopy height (CH), leaf area index (LAI), and number of cycle days (NCD) of Guinea grass (Panicum maximum cv. Mombaça) and Bermuda grass (Cynodon spp. Tifton 85) single cropped for one year and overseeded with black oat and ryegrass in the autumn-winter season. The study was carried out from February 2016 to February 2017, and forage crops were sprinkle irrigated. LAI and CH were measured twice a week, at intervals of 3 and 4 days. These parameters were correlated to GDD accumulation at each cutting cycle (CC). All the correlations showed high coefficients in linear fits. For spring-summer cycles, Guinea grass in exclusive cultivation showed the highest averages for CH and LAI, being 102.3 cm and 5.93, respectively. For autumnwinter cycles, when this grass was overseeded, it showed an LAI value similar to that when single cropped, which was of about 5.6. Yet single Bermuda grass presented lower values of LAI (one unit lower) and CH (16.4 cm lower) in the autumn-winter season when compared to that overseeded. The spring-summer cycles of Guinea grass had a duration of 24 days, after which no increase in leaf production was registered.

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“…Essa correlação espacial com altitude foi verificada em Cuba por Solano et al (2003); os autores verificaram, por meio de mapas de ETo, que os gradientes de variação da ETo apresentam valores cada vez menores com o aumento da altitude. Essa mesma tendência foi observada em Botucatu e Piracicaba, no Brasil e Güira de Melena, em Cuba (PEREIRA et al, 2016). 1 27,0 14,8 46,1 10,6 79,4 12,1 110,1 11,5 2 28,3 16,1 49,9 13,5 89,4 11,8 127,0 12,6 3 33,2 17,2 59,5 15,1 105,3 12,6 149,2 12,4 4 26,8 19,9 48,2 21,8 86,3 19,0 122,4 17,7 5 31,7 15,8 56,9 13,5 102,0 12,1 144,8 13,0 6 26,6 13,6 47,3 12,0 84,6 13,8 119,1 12,5 7 31,1 13,8 54,6 11,4 97,9 12,0 139,1 12,4 8 24,8 13,0 43,0 10,3 76,9 9,8 108,2 9,4 9 30,8 23,2 55,1 16,2 98,9 12,9 141,2 14,3 10 28,9 20,5 50,7 12,7 90,2 14,5 127,2 11,9 11 24,3 14,1 41,1 12,5 72,5 14,5 101,6 13,5 12 27,7 19,3 50,0 13,5 90,3 12,5 127,4 12,2 13 25,3 13,9 44,6 13,5 79,8 12,6 112,1 11,1 14 22,8 12,4 38,5 10,0 66,2 9,8 91,4 9,1 15 31,3 13,7 55,5 11,4 100,6 10,4 142,4 11,3 16 29,0 22,6 52,2 19,4 93,2 15,2 132,6 12,8 17 24,0 15,0 41,6 14,7 72,7 14,9 101,7 14,1 18 26,6 18,7 47,6 16,7 84,3 9,9 119,1 9,7 19 30,9 17,0 55,1 13,2 99,0 13,0 140,0 13,7 20 26,6 12,1 46,9 11,8 84,0 11,7 117,8 10,9 21 23,1 11,8 39,9 12,5 68,1 9,9 94,5 10,9 22 30,3 13,5 54,0 12,6 96,7 11,5 136,4 11,0 23 24,3 16,2 42,9 14,3 77,0 16,3 108,0 12,1 24 28,9 19,1 53,4 18,0 96,3 14,6 137,2 15,4 25 31,8 15,2 56,7 15,5 102,1 14,1 145,2 12,7 26 27,7 17,6 49,3 14,0 89,2 12,8 125,8 11,6 27 22,7 15,1 38,6 14,6 67,3 12,2 94,2 13,1 28 30,5 13,2 55,1 10,0 99,6 11,2 140,6 11,3 29 26,2 10,4 44,8 11,7 78,6 11,1 111,4 11,4 30 26,3 8,8 47,2 8,7 85,4 8,9 120,8 8,6 31 27,0 7,5 48,9 8,1 88,7 9,4 125,6 9,0 32 24,7 16,1 44,1 14,5 79,2 14,3 111,1 13,7 33 31,8 16,3 56,7 16,4 103,2 15,5 146,7 15,7 Id -Identificação da estação; ETo -Método de Penman-Monteith preconizado pela FAO-56; ETo5 -5 dias; ETo10 -10 dias; ETo20 -20 dias; ETo30 -30 dias acumulados Por meio da função de distribuição acumulada de Gumbel II foram gerados os valores de ETo para os níveis de probabilidade de 50, 70, 80, 90 e 95%, correspondendo ao tempo de retorno de 2, 3, 5, 10 e 20 anos, respectivamente (Figura 6 a 9).…”

Section: Resultsunclassified

Aspectos Espaciais Da Evapotranspiração Com O Foco No Dimensionamento De Sistemas De Irrigação

José¹,

Santos²,

Alves³

et al. 2019

R_I

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ASPECTOS ESPACIAIS DA EVAPOTRANSPIRAÇÃO COM O FOCO NO DIMENSIONAMENTO DE SISTEMAS DE IRRIGAÇÃO JEFFERSON VIEIRA JOSÉ1; LUCAS DA COSTA SANTOS2; DANIEL SOARES ALVES3; PABLO RICARDO NITSCHE4; MARCOS VINICIUS FOLEGATTI5 E WAGNER WOLFF6 1Centro multidisciplinar, UFAC, Campus Floresta, Rua Estrada da Canela Fina, KM 12 Gleba Formoso - São Francisco, CEP: 69895-000, Cruzeiro do Sul – AC, Brasil, e-email: jfvieira@hotmail.com.br 2Departamento de Agronomia, UFVJM, Campus JK - Rodovia MGT 367, Km 583, nº5000 - Bairro Alto da Jacuba, CEP: 39100-000 – Diamantina – MG, Brasil, e-email: lucas.santos@ufvjm.edu.br 3Departamento de Agrometeorologia. Instituição: Instituto Agronômico do Paraná - IAPAR. Endereço: Rodovia Celso Garcia Cid, km375, Bairro Ernani Moura Lima II, CEP: 86047-90, Londrina - PR, Brasil, e-mail: danielsoares@iapar.br 4Departamento de Agrometeorologia. Instituição: Instituto Agronômico do Paraná - IAPAR. Endereço: Rodovia Celso Garcia Cid, km375, Bairro Ernani Moura Lima II, CEP: 86047-90, Londrina - PR, Brasil, e-mail: pablo@iapar.br 5Departamento de Engenharia de Biossistemas, USP, ESALQ, Avenida Pádua Dias, 11, Bairro Agronomia, CEP: 13418-900, Piracicaba – SP, Brasil, e-mail: mvfolega@usp.br 6Departamento de Engenharia de Biossistemas, USP, ESALQ, Avenida Pádua Dias, 11, Bairro: Agronomia, CEP: 13418-900, Piracicaba – SP, Brasil, e-mail: wwolf@usp.br 1 RESUMO Aspectos espaciais do consumo hídrico das culturas, com o foco no dimensionamento de sistemas de irrigação, é imprescindível para a racionalização do uso da água. Este trabalho objetivou analisar a distribuição de frequência da evapotranspiração de referência acumulada (EToac) no estado do Paraná por meio da espacialização dos parâmetros da distribuição de probabilidade, visando o dimensionamento de sistemas de irrigação. Dados diários de elementos meteorológicos (temperatura máxima, mínima e média; umidade relativa média; radiação solar global; insolação; velocidade do vento), entre os anos de 1980 a 2010, de 33 estações meteorológicas no estado do Paraná, foram utilizados na estimativa da evapotranspiração de referência (ETo) pelo método de Penman-Monteith. A ETo foi acumulada em períodos consecutivos de 5, 10, 20 e 30 dias e os seus valores máximos anuais foram avaliados e ajustados a nove distribuições de probabilidade (Log-normal, Weibull, Gamma, Cauchy, Normal, Logística, Birnbaum-Saunders, Gumbel e Gumbel-II). A distribuição de probabilidade de Gumbel II, verificada pelo Critério de Informação de Akaike, foi escolhida na geração de valores de EToac, nos diferentes níveis de probabilidade, por meio de mapas da distribuição dos parâmetros a e b para representar o estado do Paraná. Keywords: Eventos extremos; geoestatística; Penman-Monteith; Paraná JOSÉ, J. J.; SANTOS, L. C.; ALVES, S. S.; NITSCHE, P. R.; FOLEGATTI, M. V.; WOLFF, W. SPATIAL ASPECTS OF EVAPOTRANSPIRATION WITH FOCUS ON THE DESIGN OF IRRIGATION SYSTEMS 2 ABSTRACT Spatial aspects of crop water consumption with focus on the design of irrigation systems is essential for rationalization of water use. This work aimed to analyze the frequency distribution of cumulative reference evapotranspiration (EToac) in the State of Paraná by means of spatialization of parameters of the probability distribution, aiming at the design of irrigation systems. Daily data of meteorological elements (maximum, minimum and average temperature, mean relative humidity, global solar radiation, insolation and wind speed) between the years of 1980 and 2010 of 33 meteorological stations in the State of Paraná were used to estimate evapotranspiration of (ETo) by the Penman-Monteith method. The ETo was accumulated in consecutive periods of 5, 10, 20 and 30 days and its annual maximum values were evaluated and adjusted to nine probability distributions (Log-normal, Weibull, Gamma, Cauchy, Normal, Logistics, Birnbaum-Saunders, Gumbel and Gumbel-II), the probability distribution of Gumbel II, verified by the Akaike Information Criterion, was chosen in the generation of EToac values, at the different levels of probability, by means of maps of distribution of the parameters a and b to represent the State of Paraná. Keywords: Extreme events, Gumbel, Geostatistics, Penman-Monteith, Parana

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Estudo Comparativo Da Evapotranspiração De Referência Entre Localidades No Estado De São Paulo E Na Província De Habana

Cited by 8 publications

References 5 publications

Climatic characterization and evaluation of the need for supplementary irrigation for cacao in southern Bahia, Brazil

Climatic characterization and evaluation of the need for supplementary irrigation for cacao in southern Bahia, Brazil

Vegetative Development and Growing Degree-Days of Tropical and Winter Forages

Aspectos Espaciais Da Evapotranspiração Com O Foco No Dimensionamento De Sistemas De Irrigação

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