Water requirements of irrigated mango orchards in northeast Brazil

Azevedo, Pedro Vieira de; Silva, Bernardo Barbosa da; Silva, Vicente P. R. da

doi:10.1016/s0378-3774(02)00083-5

Cited by 96 publications

(59 citation statements)

References 21 publications

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“…Mean annual values of the climate variables are: air temperature: 26.5 °C, rainfall: 541.1 mm, relative air humidity: 65.9 %, class "A" evaporation pan: 2,500 mm yr -1 , and wind speed: 2.3 m s -1 . Rainfall is irregularly distributed in space and time, concentrated in December to April; annual solar radiation is greater than 3,000 h (Azevedo et al, 2003). Soil in the area was classified as an Ultisol (Silva, 2005), originating from alteration of the cobble covering schists from the Pre-Cambrian Eon (mica schists).…”

Section: Methodsmentioning

confidence: 99%

Heavy Metals and Micronutrients in the Soil and Grapevine Under Different Irrigation Strategies

Oliveira

Lima

Salviano

et al. 2015

Rev. Bras. Ciênc. Solo

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Soils under natural conditions have heavy metals in variable concentrations and there may be an increase in these elements as a result of the agricultural practices adopted. Transport of heavy metals in soil mainly occurs in forms dissolved in the soil solution or associated with solid particles, water being their main means of transport. In this context, the aim of this study was to evaluate the heavy metal and micronutrient content in the soil and in the grapevine plant and fruit under different irrigation strategies. The experiment was carried out in Petrolina, PE, Brazil. The treatments consisted of three irrigation strategies: full irrigation (FI), regulated deficit irrigation (RDI), and deficit irrigation (DI). During the period of grape maturation, soil samples were collected at the depths of 0-10, 10-20, 20-40, 40-60, and 60-80 cm. In addition, leaves were collected at the time of ripening of the bunches, and berries were collected at harvest. Thus, the heavy metal and micronutrient contents were determined in the soil, leaves, and berries. The heavy metal and micronutrient contents in the soil showed a stochastic pattern in relation to the different irrigation strategies. The different irrigation strategies did not affect the heavy metal and micronutrient contents in the vine leaves, and they were below the contents considered toxic to the plant. In contrast, the greater availability of water in the FI treatment favored a greater Cu content in the grape, which may be a risk to vines, causing instability and turbidity. Thus, adoption of deficit irrigation is recommended so as to avoid compromising the stability of tropical wines of the Brazilian Northeast.

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Section: Methodsmentioning

confidence: 99%

Heavy Metals and Micronutrients in the Soil and Grapevine Under Different Irrigation Strategies

Oliveira

Lima

Salviano

et al. 2015

Rev. Bras. Ciênc. Solo

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“…Hence, conventional techniques like eddy covariance (EC) and Bowen ratio (BR) have been applied to several land uses such as grassland, forest, mango orchard, garlic, grapes, citrus, etc. [21][22][23][24][25][26][27][28]. However, these conventional techniques do not provide spatial trends (or distribution) at the regional scale especially in regions with advective climatic conditions.…”

Section: Introductionmentioning

confidence: 99%

Evapotranspiration Estimation with Remote Sensing and Various Surface Energy Balance Algorithms—A Review

2014

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Abstract:With the advent of new satellite technology, the radiative energy exchanges between Sun, Earth, and space may now be quantified accurately. Nevertheless, much less is known about the magnitude of the energy flows within the climate system and at the Earth's surface, which cannot be directly measured by satellites. This review surveys the basic theories, observational methods, and different surface energy balance algorithms for estimating evapotranspiration (ET) from landscapes and regions with remotely sensed surface temperatures, and highlights uncertainties and limitations associated with those estimation methods. Although some of these algorithms were built up for specific land covers like irrigation areas only, methods developed for other disciplines like hydrology and meteorology, are also reviewed, where continuous estimates in space and in time are needed. Temporal and spatial scaling issues associated with the use of thermal remote sensing for estimating evapotranspiration are also discussed. A review of these different satellite based remote sensing approaches is presented. The main physical bases and assumptions of these algorithms are also discussed. Some results are shown for the estimation of evapotranspiration on a rice paddy of Chiayi Plain in Taiwan using remote sensing data.

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“…O crescimento no setor sucroalcooleiro gera o questionamento sobre os impactos no ambiente, a necessidade do aumento da produtividade e a maior eficiência no uso da água pela cultura. Nesse aspecto, o método que possibilita o estudo mais detalhado das condições hídricas em que a cultura se desenvolveu é o que quantifica os processos da equação do balanço da água no solo (ANTONINO et al, 2000;CINTRA;SAAD, 2000;TIMM et al, 2002;SILVA;SILVA, 2003;CRUZ et al, 2005). Neste sentido, o objetivo deste trabalho é determinar as necessidades hídricas da cana-de-açúcar cultivada em ambientes tropicais, com vistas à utilização apropriada dos recursos hídricos da região e o aumento da produtividade da cultura.…”

Section: Nounclassified

Necessidades hídricas da cana-de-açúcar cultivada em clima tropical

2014

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ResumoA estimativa precisa do consumo hídrico da cana-de-açucar é importante para obtenção da máxima produtividade com menos investimentos. O objetivo do trabalho foi determinar as necessidades hídricas da cana-de-açúcar cultivada em clima tropical. O experimento foi realizado no Estado da Paraíba, durante o ciclo produtivo da cultura da cana-de-açucar variedade RB 92 579 irrigada por pivô central, no período de outubro de 2009 a setembro de 2011. A evapotranspiração da cultura (ETc) foi obtido pelo método do balanço hídrico (BH) e a evapotranspiração de referência (ETo) pelo método de PenmanMonteith, utilizando-se os dados de temperatura do ar, umidade relativa, velocidade do vento e radiação solar coletados na Plataforma de Coleta de Dados próxima à area experimental. A umidade do solo foi monitorada utilizando-se sondas TDR (Frequency Domain Reflectometry), modelo PR2/6, Delta-T. Os resultados permitiram constatar que os valores dos coeficientes de cultivo (Kc) propostos pela FAO para a cultura da cana-de-açúcar não são apropriados para regiões tropicais. O consumo hídrico da cultura variou entre 2,6 mm dia -1 , na fase inicial, a 6,38 mm dia -1 , na fase intermediária, com média de 4,3 mm dia -1 . Similarmente, o coeficiente da cultura variou entre 0,56 e 1,43, com média igual a 0,99, respectivamente, nos mesmos estádios fenológicos da cultura. Palavras-chave: Balanço hídrico, Saccharum spp, umidade do solo, irrigação, equação de PenmanMonteith AbstractAn accurate estimation of water consumption of cane sugar crop is important for maximum productivity with less investment. The objective of this study was to determine the water requirements of sugar cane grown in tropical environments. The field experiment was carried out in Paraiba state, during the productive cycle of sugar cane crop variety RB 92 579 irrigated by central pivot irrigation (sprinkler) from October 2009 to September 2011. The crop evapotranspiration was obtained based on soil water balance and reference evapotranspiration by Penman-Monteith method (FAO/56), using the data of air temperature, relative humidity, wind speed and solar radiation from Data Collection Platform, next to the experimental site. Soil water moisture was monitored by TDR probes (Frequency Domain Reflectometry), Model PR2/6, Delta-T. The results showed that the crop coefficients values proposed by the FAO for sugar cane are not suitable for tropical regions. The water consumption of sugar cane ranged from 2.6 mm day -1 , at initial crop growth stage, to 6.38 mm day -1 , with an average of 4.3 mm day -1 for all cycle. Similarly, the crop coefficient ranged from 0.56 to 1.43, with an average of 0.99 for the same development crop growth stages.

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Water requirements of irrigated mango orchards in northeast Brazil

Cited by 96 publications

References 21 publications

Heavy Metals and Micronutrients in the Soil and Grapevine Under Different Irrigation Strategies

Heavy Metals and Micronutrients in the Soil and Grapevine Under Different Irrigation Strategies

Evapotranspiration Estimation with Remote Sensing and Various Surface Energy Balance Algorithms—A Review

Necessidades hídricas da cana-de-açúcar cultivada em clima tropical

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