Soil aggregates structure-based approach for quantifying the field capacity, permanent wilting point and available water capacity

ATRIBUTOS FÍSICO-HÍDRICOS DO SOLO VIA FUNÇÕES DE PEDOTRANSFERÊNCIA EM SOLOS DOS TABULEIROS COSTEIROS DE PERNAMBUCO FERNANDA HELENA NASCIMENTO DE ANDRADE1; CERES DUARTE GUEDES CABRAL DE ALMEIDA2; BRIVALDO GOMES DE ALMEIDA3; JOSÉ AUDIFAX CÉZAR DE ALBUQUERQUE FILHO1; BRUNO CAMPOS MANTOVANELLI4 E JOSÉ COELHO DE ARAÚJO FILHO5 1 Departamento de Engenharia Agrícola, Programa de Pós-Graduação em Engenharia Agrícola da Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manuel de Medeiros, S/N, Dois Irmãos, CEP: 52171-900, Recife, PE, Brasil, [email protected], [email protected] 2 Colégio Agrícola Dom Agostinho Ikas, Programa de Pós-Graduação em Engenharia Agrícola da Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manuel de Medeiros, S/N, Dois Irmãos, CEP: 52171-900, Recife, PE, Brasil, [email protected]. 3 Departamento de Agronomia, Programa de Pós-Graduação em Ciência do Solo da Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manuel de Medeiros, S/N, Dois Irmãos, CEP: 52171-900, Recife, PE, Brasil, [email protected]. 4 Departamento de Ciências Rurais, Programa de Pós-Graduação em Ciência do Solo da Universidade Federal de Santa Maria - UFSM, Avenida Roraima, n° 1000, Camobi, CEP: 97105-900, Santa Maria, RS, Brasil, [email protected]. 5 Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA Solos - UEP Recife, Rua Antônio Falcão, n° 402, Boa Viagem, CEP: 51020-240, Recife, PE, Brasil, [email protected]. 1 RESUMO Objetivou-se gerar funções de pedotransferência (FPT) com base em dados das frações granulométricas, distribuição do tamanho de poros, densidade do solo e de partículas para estimar a umidade do solo equivalente à capacidade de campo (CC), ponto de murcha permanente (PMP) e a capacidade de armazenamento de água disponível (CAD) em Argissolos Amarelos representativos dos tabuleiros costeiros na zona da mata norte de Pernambuco. Para isso, foram coletadas amostras deformadas e indeformadas na camada 0,00 - 0,20 m de profundidade. As FPTs foram geradas a partir do método de regressão linear múltipla aplicando a técnica de stepwise backward. Este método eliminou alguns atributos físico-hídricos do solo baseado nos valores de R2 e no Teste t. Os coeficientes de regressão do modelo proposto para predição de CAD, CC e o PMP apresentaram significância de 1% de probabilidade para as variáveis independentes selecionadas para cada modelo, indicando que esses parâmetros podem ser preditos, com ótima precisão, a partir do conteúdo de areia, argila, mesoporosidade, microporosidade e densidade do solo, as quais são fáceis de serem determinadas e obtidas, pré-requisito básico para construção das FPTs. Palavras-chave: manejo de irrigação, stepwise backward, índices estatísticos. ANDRADE, F. H. N.; ALMEIDA, C. D. G. C.; ALMEIDA, B. G.; ALBUQUERQUE FILHO, J. A. C.; MANTOVANELLI, B. C.; ARAÚJO FILHO, J. C. SOIL PHYSICAL-HYDRIC PROPERTIES BY PEDOTRANSFER FUNCTION IN SOILS OF COASTAL PLAINS OF PERNAMBUCO 2 ABSTRACT Aimed to generate pedotransfer functions (PTF) based on particle size, pore size distribution, soil and particle density to estimate the field capacity (CC), permanent wilting point (PMP) and available water capacity (CAD) in Ultisol Typic Fragiaquults in coastal plains of Pernambuco. Thus, deformed and undeformed samples were collected at 0.00 - 0.20m depth. PTFs were generated from multiple linear regression method by stepwise backward technique. This method eliminated some hydro-physical soil attributes, based on the values of R2 and t test. CAD, CC and PMP estimated values showed a significant correlation of 1% probability for independent variables selected for each model. Thus, available water capacity, field capacity and permanent wilting point can be predicted with great precision by sand, clay content, mesoporosity, microporosity and soil density, which are easy to determine and obtain, basic prerequisite for construction of PTFs. Keywords: irrigation management, stepwise backward, statistical indexes.

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Statistical equations for estimating field capacity, wilting point and available water capacity of soils from their saturation percentage

The Journal of Agricultural Science ◽

10.1017/s0021859600082083 ◽

1988 ◽

Vol 110 (3) ◽

pp. 515-520 ◽

Cited By ~ 6

Author(s):

I. S. Dahiya ◽

D. J. Dahiya ◽

M. S. Kuhad ◽

S. P. S. Karwasra

Keyword(s):

Soil Moisture ◽

Estimation Error ◽

Chemical Properties ◽

Field Capacity ◽

Regression Equations ◽

Data Set ◽

Water Capacity ◽

Available Water ◽

Available Water Capacity ◽

Wilting Point

SummaryStatistical equations were derived for estimating three soil moisture constants, i.e. field capacity (FC), wilting point (WP) and available water capacity (AWC), from soil saturation percentage (SP), which is an easily determinable parameter. The regression equations were evaluated from a data set obtained on 438 soil samples collected from different horizons of 111 profiles of the Indogangetic Plains in northern India, having a wide variation of texture and other physico-chemical properties. The three soil moisture constants were positively correlated with logarithms of SP (r = 0·985 for FC v. In SP, 0·979 for WP v. In SP, and 0·914 for AWC v. In SP). The regression equations were thetested on an independent set of experimental data on 57 samples collected from 14 representative soil profiles of the study area. Values of the three moisture constants of this data set, predicted from the regression equations, were in exceptionally good agreement with the observed values. The mean estimation error (the error of the estimated value relative to the measured value) was only 0·55% for FC, 0·12% for WP and 0·67% for AWC.

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The Available-Water Capacity of Barbados Soils

Experimental Agriculture ◽

10.1017/s0014479700004427 ◽

1969 ◽

Vol 5 (3) ◽

pp. 167-182 ◽

Cited By ~ 1

Author(s):

J. C. Hudson

Keyword(s):

Soil Water ◽

Agricultural Soils ◽

Field Capacity ◽

Soil Water Deficit ◽

Water Capacity ◽

Available Water ◽

Montmorillonite Clays ◽

Available Water Capacity ◽

Water Holding ◽

Large Soil

SummaryLarge soil monoliths, extracted undisturbed in 44-gallon oil drums, have been used to assess the available-water capacity, and the relation between the growth of sugarcane and soil water deficit for agricultural soils in Barbados. Constancy of field capacity was studied and the effect of cultivation on the storage of available soil water. Deep montmorillonite clays and oceanic soils had storage capacities greater than 20 cm. of water in an 80 cm. profile, whereas sandy or stony montmorillonite clays and most soils developed from kaolinite clays had capacities less than 11 cm. Cultivation significantly increased the water holding capacity of soils but this was rarely as great as for fabricated composts and the water was never so freely available. The data have been used in decisions about cultivation and irrigation, and as the basis for an ecological grouping of sugar estates according to their probable water balance.

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Soil Water Retention in the Semiarid Region of Brazil

Journal of Agricultural Science ◽

10.5539/jas.v10n9p105 ◽

2018 ◽

Vol 10 (9) ◽

pp. 105

Author(s):

Antonio Carlos da Silva ◽

Jeane Cruz Portela ◽

Rafael Oliveira Batista ◽

Rutilene Rodrigues da Cunha ◽

Joaquim Emanuel Fernandes Gondim ◽

...

Keyword(s):

Soil Structure ◽

Water Retention ◽

Field Capacity ◽

Water Retention Curve ◽

Soil Water Retention ◽

Retention Curve ◽

Available Water ◽

Permanent Wilting Point ◽

Physical Attributes ◽

Wilting Point

From the physics point of view, soil structure is a dynamic attribute that is affected by genetic conditions and anthropogenic changes and requires an integrated approach. Soil water retention curve is one of the main tools used in soil structure evaluations. The objective of this work was to evaluate the structural and chemical attributes of soils of different classes and agroecosystems in the Terra de Esperança Settlement (Governador Dix Sept Rosado, Rio Grande do Norte, Brazil) to distinguish these environments. Disturbed and undisturbed soil samples were collected in horizons of 10 soil profiles of the soil classes: Cambissolo Háplico (Haplustepts), Latossolo Vermelho-Amarelo (Eutrustox), Chernossolo Rêndzico (Calciustolls), and Neossolo Flúvico (Usticfluvents). The soil physical attributes evaluated were granulometry, soil density, total porosity, aeration porosity, macroporosity, microporosity, field capacity, permanent wilting point, available water, and water retention curve. The results were expressed in averages of four replicates per horizon (in laboratory) by multivariate analysis, which detected the most sensitive attributes for the distinction of the environments. The soil physical attributes of the different classes and its inorganic fractions, especially silt and clay, were determinant to distinguish the environments; they affected the microporosity; aeration porosity; and available water. The source material of the Chernossolo Rêndzico, which is rich in calcium and magnesium, affected its physical attributes, characterized by the predominance of the silt fraction. Clay was the determinant fraction of the Cambissolo Háplico, and Neossolo Flúvico; and the sand fraction on the surface layer, and clay fraction in the Bw horizon were determinant of the Latossolo Vermelho-Amarelo. The more expressive physical attributes were soil density, sand content, macroporosity (Latossolo Vermelho-Amarelo), microporosity, field capacity, available water, permanent wilting point, total organic carbon, mass-based moisture, volume-based moisture, clay, aeration porosity (Cambissolo Háplico, and Neossolo Flúvico), and silt (Chernossolo Rêndzico).

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Sensitivity of soil structure to changes in organic carbon content: Predictions using pedotransfer functions

Canadian Journal of Soil Science ◽

10.4141/s96-094 ◽

1997 ◽

Vol 77 (4) ◽

pp. 655-667 ◽

Cited By ~ 59

Author(s):

B. D. Kay ◽

A. P. da Silva ◽

J. A. Baldock

Keyword(s):

Organic Carbon ◽

Structural Characteristics ◽

Field Capacity ◽

Pedotransfer Functions ◽

Organic Carbon Content ◽

Soil Resistance ◽

Available Water ◽

Permanent Wilting Point ◽

Least Limiting Water Range ◽

Wilting Point

Pedotransfer functions (PTFs) were used to assess the sensitivity of the structural characteristics of coarse- and medium-textured calcareous illitic soils at different levels of relative compaction (RC) to changes in the organic carbon (OC) content. The analyses predicted that an increase in the OC content of 0.01 kg kg−1 would:• increase the available water content from 0.02 to 0.04 m3 m−3 with the largest increases occurring in coarser-textured soils and not being strongly influenced by RC;• decrease the air-filled porosity at field capacity from 0.01 to 0.04 m3 m−3 with the largest decreases occurring in the finer-textured soils and not being strongly influenced by RC;• decrease the soil resistance to penetration with the decreases most pronounced at lower water potentials and higher RC; at the permanent wilting point and a RC of 0.95 the decrease would range from 1.2 to 3.8 MPa;• increase the least limiting water range from 0.01 to 0.05 m3 m−3 with the increase varying with clay content.A comparison with predictions based on PTFs derived from data sets from other parts of the world indicated caution should be exercised in applying PTFs to soil and climatic conditions that are different from those from which the PTFs were derived until the impacts of these conditions are better understood. Key words: Bulk density, field capacity, permanent wilting point, available water; aeration, soil resistance, least limiting water range

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Available water capacity of the surface layer of various soils from the arid and semiarid region of Puerto Rico

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v36i2.12793 ◽

1969 ◽

Vol 36 (2) ◽

pp. 134-140

Author(s):

M. A. Lugo López

Keyword(s):

Surface Layer ◽

Puerto Rico ◽

Sandy Loam ◽

Field Capacity ◽

Semiarid Region ◽

Water Capacity ◽

Semiarid Regions ◽

Available Water ◽

Available Water Capacity ◽

Arid And Semiarid

The available water of soils is considered to be in the moisture range from field capacity to permanent wilting percentage. The customary procedures for determining these two soil constants are quite inconvenient. Although data are presented that show good agreement between moisture equivalents and field-capacity values in selected soils, it was not possible to obtain a reliable regression with soils from the arid and semiarid regions of Puerto Rico. The regression of permanent wilting percentages by the plant method to 15-atmosphere percentages is expressed by the equation, Y = 2.37 + 0.76 X, in which Y is the permanent wilting percentage and X is the 15- atmosphere percentage. Data on the available water capacity of the surface layer of sons from the arid and semiarid regions of Puerto Rico are presented. The range of available water is adequate in most soils, fluctuating from about 18 to 25, except in sands where it is lower. It is about the same in heavy soils such as clays and clay loams as in lighter ones such as sandy loam and sandy clay loams.

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Field Capacity and Available Water Capacity

SSSA Book Series - Methods of Soil Analysis ◽

10.2136/sssabookser5.1.2ed.c36 ◽

2018 ◽

pp. 901-926 ◽

Cited By ~ 44

Author(s):

D. K. Cassel ◽

D. R. Nielsen

Keyword(s):

Field Capacity ◽

Water Capacity ◽

Available Water ◽

Available Water Capacity

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Comparison of the physical properties of soils belonging to different reference soil groups

Soil and Water Research ◽

10.17221/31/2020-swr ◽

2020 ◽

Vol 16 (No. 1) ◽

pp. 29-38

Author(s):

Jan Vopravil ◽

Pavel Formánek ◽

Tomáš Khel

Keyword(s):

Physical Properties ◽

Bulk Density ◽

Particle Density ◽

Total Porosity ◽

Capillary Water ◽

Water Capacity ◽

Available Water Capacity ◽

Permanent Wilting Point ◽

Wilting Point ◽

Soil Groups

Soil properties can be influenced by long-term agricultural management practices as described in pedological literature. In this study, selected physical properties (particle density and bulk density, total porosity, maximum capillary water capacity, minimum air capacity, field capacity, permanent wilting point and available water capacity) of topsoils from different reference soil groups (Cambisols, Luvisols, Fluvisols, Chernozems and Phaeozems, Leptosols, Stagnosols and Gleysols) were sampled and analysed in the years 2016–2017. The topsoil samples were taken from points of so-called S (specific) soil pits to be sampled from the General Soil Survey of Agricultural Soils (GSSAS) which was accomplished in the years 1961–1970. In addition, some of the properties were also compared with those measured during the GSSAS. Recognising the properties, only the particle density, the maximum capillary water capacity, the permanent wilting point and the available water capacity of the topsoil of the individual soil groups were statistically significantly (P < 0.05) different. A comparison of the physical properties with those analysed after more than 40 years was performed, the bulk density increased and the total porosity decreased in the topsoil of the major part of the studied soil groups.

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Field Characterization of Field Capacity and Root Zone Available Water Capacity for Variable Rate Irrigation

Applied Engineering in Agriculture ◽

10.13031/aea.11963 ◽

2017 ◽

Vol 33 (4) ◽

pp. 559-572 ◽

Cited By ~ 11

Author(s):

Tsz Him Lo ◽

Derek M. Heeren ◽

Luciano Mateos ◽

Joe D. Luck ◽

Derrel L. Martin ◽

...

Keyword(s):

Root Zone ◽

Field Capacity ◽

Variable Rate ◽

Water Capacity ◽

Spatial Characterization ◽

Available Water ◽

Sampling Locations ◽

Available Water Capacity ◽

Variable Rate Irrigation

Abstract. Accurate spatial characterization of field capacity (FC) and root zone available water capacity (R) can enhance site-specific management practices—such as variable rate irrigation—to lower input costs, reduce contaminant leaching, and/or improve crop yield. Measuring the volumetric water content after wet soils drain following substantial precipitation can provide a field estimate of FC. The average FC (FCa) for the managed root zone was determined at thirty-two locations in a topographically variable field in south central Nebraska. The difference between FC and permanent wilting point estimates—computed using a pedotransfer function—yielded values for R for the observation locations. Sampling locations were too sparse for reliable interpolation across the field. Therefore, relationships between a surrogate, or predictor, variable and soil water properties were used to provide spatial distributions of FC and R for the field. Field estimates of FCa and R were more strongly correlated to elevation (correlation coefficient, r = -0.77 and -0.76, respectively) than to deep soil apparent electrical conductivity (r = -0.46 and -0.39, respectively). Comparing maps of FCa and R from gSSURGO to maps from field characterization yielded a root mean squared difference of 0.031 m3 m-3 for FCa and 34 mm for R. Sampling seven locations across the elevation range in this field produced FCa and R prediction functions that achieved 95% and 87%, respectively, of the reduction in the standard error achievable with a larger number of sampling locations. Spatial characterization of FCa and R depends on identifying a suitable predictor variable(s) based on field knowledge and available spatial data. Well-chosen variables may allow satisfactory predictions using several sampling locations that are distributed over the entire field. Ultimately, the costs and benefits of spatial characterization should be considered when evaluating site-specific water management. Keywords: Available water capacity, Electrical conductivity, Field capacity, Permanent wilting point, Spatial variability, Variable rate irrigation.

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Plant-available soil water capacity: estimation methods and implications

Revista Brasileira de Ciência do Solo ◽

10.1590/s0100-06832014000200011 ◽

2014 ◽

Vol 38 (2) ◽

pp. 464-475 ◽

Cited By ~ 25

Author(s):

Bruno Montoani Silva ◽

Érika Andressa da Silva ◽

Geraldo César de Oliveira ◽

Mozart Martins Ferreira ◽

Milson Evaldo Serafim

Keyword(s):

Water Content ◽

Inflection Point ◽

Practical Importance ◽

Field Capacity ◽

Estimation Methods ◽

Water Retention Curve ◽

Water Capacity ◽

Available Water ◽

Cubic Polynomial ◽

Wilting Point

The plant-available water capacity of the soil is defined as the water content between field capacity and wilting point, and has wide practical application in planning the land use. In a representative profile of the Cerrado Oxisol, methods for estimating the wilting point were studied and compared, using a WP4-T psychrometer and Richards chamber for undisturbed and disturbed samples. In addition, the field capacity was estimated by the water content at 6, 10, 33 kPa and by the inflection point of the water retention curve, calculated by the van Genuchten and cubic polynomial models. We found that the field capacity moisture determined at the inflection point was higher than by the other methods, and that even at the inflection point the estimates differed, according to the model used. By the WP4-T psychrometer, the water content was significantly lower found the estimate of the permanent wilting point. We concluded that the estimation of the available water holding capacity is markedly influenced by the estimation methods, which has to be taken into consideration because of the practical importance of this parameter.

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