Experimentação e modelagem do avanço de sais no perfil do solo em área cultivada com repolho sob alternativas de manejo de irrigação, no semiárido de Pernambuco

Montenegro, Suzana; Silva, José G. da; Montenegro, Abelardo Antônio de Assunção; Carvalho, Josiane Celerino de; Filho, J.A. Comastri

doi:10.5039/agraria.v8i1a1391

Cited by 4 publications

(4 citation statements)

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“…Montenegro et al (2013), em experimentação e modelagem do avanço de sais no perfil do solo em área cultivada com repolho sob alternativas de manejo de irrigação, no semiárido de Pernambuco, verificaram que o desempenho do processo de calibração foi altamente influenciado pela umidade antecedente.…”

Section: Validação E Avaliação De Desempenho Do Modelounclassified

Modelagem da dinâmica de umidade do solo em diferentes condições de cobertura no semiárido pernambucano

Silva

Montenegro

Monteiro

et al. 2015

Agraria

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RESUMOA umidade do solo é uma variável indispensável para o entendimento de muitos processos hidrológicos e naturais que atuam em diferentes escalas espaciais e temporais. Há uma carência de informações da dinâmica de umidade do solo sob diferentes condições de cobertura na região semiárida. O monitoramento e a modelagem dessa variável ao longo do tempo tornam-se indispensáveis, para subsidiar ações de manejo e conservação do solo e água. Dentro deste contexto, o presente trabalho teve por objetivo modelar a dinâmica de umidade do solo através do Modelo Hydrus-1D, a partir de medições por meio de Reflectometria no Domínio do Tempo (TDR) em parcelas experimentais, sob condição de cobertura natural e solo descoberto, no município de Pesqueira, PE, Brasil. O modelo Hydrus-1D apresentou adequado desempenho para variável avaliada, segundo os índices aplicados. Os resultados asseguram que é possível utilizar o modelo para estimativa da umidade do solo em escala diária para o tipo de solo e condições de cobertura investigadas. A eficiência do modelo pelo índice do Nash-Sutcliffe variou de 72 a 82%, com Erro Quadrático Médio máximo de 3% e índice de concordância superior a 90%. Palavras-chave: Hydrus, modelagem, TDR, umidade do solo Modeling of soil moisture dynamics in different coverage conditions in the semiarid ABSTRACTSoil moisture is a crucial variable for understanding many natural and hydrological processes that operate at different spatial and temporal scales. There is a lack of information about soil moisture dynamics under different land cover conditions in semiarid regions. Monitoring and modeling this variable over time become essential to support management practices and conservation of soil and water. In this context, this work aimed to model the dynamics of soil moisture applying the Hydrus-1D model from measurements using time-domain reflectometer (TDR), in experimental plots under condition natural coverage and bare soil in the city Pesqueira, PE, Brazil. The Hydrus-1D model presented adequate performance for variable evaluated according to the applied indexes. Results point out that it is possible to use the model to estimate soil moisture at daily basis for the type of soil and cover conditions investigated. The model efficiency by Nash-Sutcliffe index ranged from 72 to 82 %, with a maximum mean squared error of 3% and concordance index higher than 90%.

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Section: Validação E Avaliação De Desempenho Do Modelounclassified

Modelagem da dinâmica de umidade do solo em diferentes condições de cobertura no semiárido pernambucano

Silva

Montenegro

Monteiro

et al. 2015

Agraria

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“…In this region, underground waters, which are sometimes the only water available for agriculture, are characterized by a high salt content (Montenegro et al, 2013), which is a limiting factor for irrigated agriculture, since salinity interferes with the physiological and biochemical functions of plants, causing a reduction in the production and yield of crops (Torres et al, 2014;Munns;Gilliham, 2015).…”

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confidence: 99%

Production of parsley in hydroponic conditions under isosmotic brackish nutrient solutions

Martins

Júnior²,

Júnior³

et al. 2019

Ciênc. agrotec.

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Brackish waters may vary in their chemical compositions, interfering with different plant responses to stress; therefore, the present study aimed to evaluate the production components of parsley plants subjected to levels of electrical conductivity in nutrient solutions with an initial ECns of 1.58 dS m-1, which was solubilized in water with the following water electrical conductivity configurations (ECw): 0.12 (control), 1.12, 2.12, 3.12, 4.12 and 5.12 dS m-1, resulting in six isosmotic levels (ECns = 1.7, 2.7, 3.7, 4.7, 5.7 and 6.7 dS m-1) in an interaction with four types of salt: NaCl, CaCl2, MgCl2 and KCl. The experimental design was completely randomized in a factorial scheme with five replicates. Two strategies were used to restore the volume consumed by the parsley plants, and the replacement was made with municipal-supply water (ECa = 0.12 dS m-1) in the first strategy and with the respective brackish waters in the second strategy. The total fresh and dry weights of the shoots and roots were evaluated as well as the total dry mass percentage of the shoots and roots. The responses of the plants to the different cationic natures was more evident at the highest levels of electrical conductivity tested, and the use of municipal-supply water to replace the evapotranspired depth mitigated the deleterious effects of salinity. In addition, greater reductions were observed in the fresh and dry mass when the replacement of the volume consumed was with the brackish waters.

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“…et al (2010),Silva et al (2013),Montenegro et al (2013), andPinho and Miranda (2014) also used statistical indices to assess the quality of the fit between measured and simulated values.The correlations between the average values of nitrate and potassium measured in the soil solution with the values simulated by the Hydrus-2D software and the values estimated by theVogeler et al (1996) model adapted to the linear type CEw-Ci ratio in loam sand and sandy clay soils, may be observed in Figure2.…”

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confidence: 99%

Simulation of nitrate and potassium concentrations in soil solution using parametric models and Hydrus-2D

Conceição¹,

Coelho²,

Silva³

et al. 2021

Rev. ambiente água

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This study estimated the nitrate and potassium concentration in the soil solution of drainage lysimeter using the mathematical models developed by Vogeler et al. (1996) and Muñoz-Carpena et al. (2005) and the computational model Hydrus-2D, while comparing the simulated and observed data using statistical parameters. The cultivar used for the study was ‘Prata Gorutuba’. The experimental plots were six lysimeters of drainage. Fertigation was performed weekly. The mathematical models developed by Vogeler et al. (1996) and Muñoz-Carpena et al. (2005) were used to determine the specific concentration of a given ion (Ci). The Hydrus software was used to simulate the dynamics of nutrients. The concentrations of nitrate and potassium in the soil solution were estimated by the model of Vogeler et al. (1996), adapted to the linear type CEw-Ci ratio and simulated by the Hydrus model, resulting in an acceptable characterization of the distribution of these nutrients.

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Experimentação e modelagem do avanço de sais no perfil do solo em área cultivada com repolho sob alternativas de manejo de irrigação, no semiárido de Pernambuco

Cited by 4 publications

References 12 publications

Modelagem da dinâmica de umidade do solo em diferentes condições de cobertura no semiárido pernambucano

Modelagem da dinâmica de umidade do solo em diferentes condições de cobertura no semiárido pernambucano

Production of parsley in hydroponic conditions under isosmotic brackish nutrient solutions

Simulation of nitrate and potassium concentrations in soil solution using parametric models and Hydrus-2D

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