[PDF] Top 20 PEDOTRANSFER FUNCTIONS TO ESTIMATE WATER RETENTION PARAMETERS OF SOILS IN NORTHEASTERN BRAZIL

PEDOTRANSFER FUNCTIONS TO ESTIMATE WATER RETENTION PARAMETERS OF SOILS IN NORTHEASTERN BRAZIL

... Pedotransfer functions (PTF) were developed to estimate the parameters (ααααα, n, θθθθθr and θθθθθs) of the van Genuchten model (1980) to describe soil water ... See full document

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PEDOTRANSFER FUNCTIONS FOR WATER RETENTION IN THE MAIN SOILS FROM THE BRAZILIAN COASTAL PLAINS Funções de pedotransferência para retenção de água nos principais solos dos tabuleiros costeiros brasileiros

... State soils demonstrated that for regions where the pedological and mineralogical variability is expressive (Streck et ...PTFs in which a small number of data of all soils is compiled ... See full document

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ASSESSMENT OF PEDOTRANSFER FUNCTIONS FOR ESTIMATING SOIL WATER RETENTION CURVES FOR THE AMAZON REGION

... capacity of levels 1 and 2 of the Tomasella PTFs is probably related to inclusion of the water content value at the -33 kPa matric potential as an independent variable in the ... See full document

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PEDOTRANSFER FUNCTIONS FOR WATER RETENTION IN DIFFERENT SOIL CLASSES FROM THE CENTER-SOUTHERN RIO GRANDE DO SUL STATE

... compared to general PTFs ...developed soils (by definition they do not have a B horizon), tending to present a wide variation in their mineralogy (EMBRAPA, 2003; OLIVEIRA et ...value of ... See full document

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ESTIMATION OF WATER RETENTION AND AVAILABILITY IN SOILS OF RIO GRANDE DO SUL

... Plant-available water in the soil is essential for adequate crop growth and development and depends on the soil ...under water stress, the molecular and physiological processes are impaired (Ramos et ... See full document

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Performance evaluation of different soil water retention functions for modeling of water flow under transient condition

... Accuracy of these models was evaluated by their correlation between estimated and measured ...because of more strength points and better adaptation with measured SWRC, but their results are compared with ... See full document

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Estimation of the Retention and Availability of Water in Soils of the State of Santa Catarina

... number of predictor variables. This makes it faster and cheaper to obtain results as it uses properties routinely obtained in soil analysis ...laboratories. In this model, the MLR performance ... See full document

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Functional test of pedotransfer functions to predict water flow and solute transport with the dual-permeability model MACRO

... related to this process with sufficient ...the parameters can be estimated from survey ...flow in soils. Despite an increasing amount of experimental evidence proving that preferential ... See full document

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FUZZY LOGIC APPLIED TO THE MODELING OF WATER DYNAMICS IN AN OXISOL IN NORTHEASTERN BRAZIL

... Modeling of water movement in non-saturated soil usually requires a large number of parameters and variables, such as initial soil water content, saturated water content ... See full document

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Funções de pedotransferência de propriedades hídricas do solo para estimar o Índice S

... is to translate existing data into data that is needed. Pedotransfer functions have been proposed for this purpose and they can be point or parametric when estimating the water ... See full document

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PEDOTRANSFER FUNCTIONS TO PREDICT WATER RETENTION FOR SOILS OF THE HUMID TROPICS: A REVIEW

... variables to describe the water content variation than do the parameter-based ...most of the PTFs developed for tropical soils fall in the group of point-based ...limited ... See full document

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PEDOTRANSFER FUNCTIONS TO ESTIMATE RETENTION AND AVAILABILITY OF WATER IN SOILS OF THE STATE OF SANTA CATARINA, BRAZIL

... available in the Proc Reg procedure of the program SAS ...set of independent variables at a pre-established level of significance and generates a coefficient for each one of the ... See full document

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PEDOTRANSFER FUNCTIONS RELATED TO SPATIAL VARIABILITY OF WATER RETENTION ATTRIBUTES FOR LOWLAND SOILS

... performance of the gravimetric point PTFs of Arruda et ...set of tropical soils composed of 249 profiles (a total of 771 horizons) coming from 22 countries (Data base ...one ... See full document

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Braz. J. Geol. vol.45 número2

... (K) in unsaturated soil is a key input parameter for modeling subsurface water and solute ...important to better deine the potential of aquifers and to optimize water resources ... See full document

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WATER INFILTRATION IN TWO CULTIVATED SOILS IN SOUTHERN BRAZIL

... layers to determine the water content, and the results were obtained on a gravimetric basis, according to Forsythe ...initiation of runoff and throughout its duration, runoff samples were ... See full document

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An Analysis Of The Difference In Gender Level Of Cassava Production And Access To Land In Abia State Nigeria

... most of the labour for harvesting and post-harvest activities (FAO, ...source of income for rural households (Davies et ...number of households in comparison with other ...sustainability ... See full document

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Study of stillage biodegradation by respirometry in sandy and clay soils

... Clay soils were significantly better on stillage decomposition when compared to sandy soils ...Clay soils presented greater efficiency in stillage biodegradation, with higher field ... See full document

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Interpretation of an injection test in a large diameter well in south Portugal and contribution to the understanding of the local hydrogeology

... problems of groundwater flow, the geologist or engineer has to find reliable values for the hydraulic characteristics of the geological formations which control the groundwater ...proved to be ... See full document

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Contaminants retention in soils as a complementary water treatment method: application in soil-aquifer treatment processes

... type of structures, besides water quality, other parameters will influence the extent of ...One of the most relevant is the particle size of the soil media, where the fine ... See full document

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THE EFFICIENCY OF DIFFERENT ESTIMATION METHODS OF HYDRO-PHYSICAL LIMITS

... context of water resource management, various methods have been used to obtain or determine soil hydraulic properties, particularly hydrolimits (Štekauerová et ...limits of water ... See full document

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