Results 181 to 190 of about 1,627 (221)

Indirect determination of rooting depth and permanent wilting point

Ecological Modelling, 1984
Abstract The relationship between production, rooting depth, permanent wilting point, soil water content and soil temperature was modeled. We hypothesized that shoot production would not be significantly correlated with soil water contents below permanent wilting or with soil water at depths below the rooting zone.
R.H. Sauer, M.L. Warner, W.T. Hinds
exaly   +2 more sources

Comparing the classical permanent wilting point concept of soil (−15,000 hPa) to biological wilting of wheat and barley plants under contrasting soil textures

Agricultural Water Management, 2020
Abstract Recent studies have shown that the permanent wilting point is influenced by soil properties and plant drought-tolerance mechanisms. This study was designed to evaluate the soil matric potential at which the biological wilting point (BWPplant) of wheat and barley cultivars occurs compared to the classic concept of the permanent wilting point ...
Cassio Tormena
exaly   +2 more sources

The relationship between surface fractal dimension and soil water content at permanent wilting point

Geoderma, 2009
Abstract Permanent wilting point (PWP) is an important soil water parameter available from the soil water retention curve. Soil water content held at 1500 kPa determines plant survival or death. Recently, the application of fractal geometry concepts has been widely used for modeling soil and its hydraulic properties (e.g.
Humberto Millán
exaly   +2 more sources

Application of firefly algorithm-based support vector machines for prediction of field capacity and permanent wilting point

Soil and Tillage Research, 2017
Abstract Soil field capacity (FC) and permanent wilting point (PWP) are significant parameters in numerous biophysical models and agricultural activities. Although these parameters can be measured directly, their measurements are quite expensive. The purpose of this study was to develop a hybrid Support Vector Machine (SVM) combined with Firefly ...
Hossein Bonakdari, Mohammad Ali Ghorbani, Shahaboddin Shamshirband   +2 more
exaly   +2 more sources

Pedotransfer functions for estimating the field capacity and permanent wilting point in the critical zone of the Loess Plateau, China

Journal of Soils and Sediments, 2018
Field capacity (FC) and permanent wilting point (PWP) are important physical properties for evaluating the available soil water storage, as well as being used as input variables for related agro-hydrological models. Direct measurements of FC and PWP are time consuming and expensive, and thus, it is necessary to develop related pedotransfer functions ...
Yuanjun Zhu, Laiming Huang, Xiaoxu Jia   +2 more
exaly   +2 more sources

A RBF Neural Network applied to predict soil Field Capacity and Permanent Wilting Point at Brazilian coast

2015 International Joint Conference on Neural Networks (IJCNN), 2015
The purpose of this paper was to evaluate the performance of pedotransfer functions generated by Radial Base Function (RBF) Artificial Neural Network (ANN) to estimate soil water retention at field capacity (FC, suction at −30 kPa) and Permanent Wilting Point (PWP, −1500 kPa) for soils at PROJIR area -RJ/BR.
Giorgia R. N. Carvalho, Diego N. Brandão, Diego B. Haddad, Vinicius Leal do Forte, Marcos B. Ceddia   +4 more
exaly   +2 more sources

Modelling Soil Water Contents at Field Capacity and Permanent Wilting Point Using Artificial Neural Network for Indian Soils

The National Academy of Sciences, India, 2015
Soil field capacity (FC) and permanent wilting point (PWP) are important input parameters in many bio- physical models. Although these parameters can be mea- sured directly, their measurement is quite difficult and expensive. Pedotransfer functions (PTFs) provide an alternative by estimating soil parameters from more readily available soil data.
M Mohanty, Mohanty M, Chaudhary R S
exaly   +2 more sources

permanent wilting point

2014
exaly   +2 more sources

SIMPLE DEVICE FOR ESTIMATING SOIL WATER CONTENT AT PERMANENT WILTING POINT

Acta Horticulturae, 2003
For irrigation management, soil water content at permanent wilting point is generally estimated by the soil water content at -1.5 MPa (W 15 ). However, the measurement of W 15 needs a special device whereas its estimation needs to know some characteristics of the soil.
Bussières, Philippe, Hostalery, Josiane, Battilani, A.   +2 more
openaire   +2 more sources

Application of hybrid ANN-whale optimization model in evaluation of the field capacity and the permanent wilting point of the soils

Environmental Science and Pollution Research, 2020
Field capacity (FC) and permanent wilting point (PWP) are two important properties of the soil when the soil moisture is concerned. Since the determination of these parameters is expensive and time-consuming, this study aims to develop and evaluate a new hybrid of artificial neural network model coupled with a whale optimization algorithm (ANN-WOA) as ...
Babak Vaheddoost, Yiqing Guan, Babak Mohammadi   +2 more
openaire   +2 more sources