Results 41 to 50 of about 3,626 (208)

Laboratory Method for Estimating Water Retention Properties of Unsaturated Soil

Walailak Journal of Science and Technology, 2012
Soil hydraulic properties are necessary for modeling water flow and solute transport in the vadose zone. However, direct measurement of these characteristics in field conditions is tedious, time-consuming and expensive. In this study, a laboratory method
Sabri KANZARI, Mohamed HACHICHA, Rachida BOUHLILA   +2 more
doaj   +1 more source

Using Clay Content to Estimate Soil Water Characteristic Curve

Guan'gai paishui xuebao, 2021
【Objective】 Water retention curve is a parameter describing the ability of a soil to hold water; it is modulated by soil structure and texture. The aim of this paper is to evaluate the feasibility of using clay content to estimate water retention curve ...
XIA Tian, TIAN Juncang
doaj   +1 more source

Funil de haines modificado: curvas de retenção de solos próximos à saturação Modified haines' funnel: soil water retention curves of soil samples near saturation

Revista Brasileira de Ciência do Solo, 2008
O movimento da água através da matriz do solo é geralmente modelado pelas equações de Darcy, Darcy-Buckingam e Richards, cujo uso está baseado no conhecimento de algumas propriedades físicas do solo, como, por exemplo, a distribuição de poros e a ...
Fabio Augusto Meira Cássaro, Luiz Fernando Pires, Rosiane Antures dos Santos, Daniel Giménez, Klaus Reichardt   +4 more
doaj   +1 more source

Modelos de ajuste e métodos para a determinação da curva de retenção de água de um Latossolo-vermelho-amarelo Adjustment models and methods for determining the soil water retention curve of a red-yellow Latosol

Revista Brasileira de Ciência do Solo, 2008
A caracterização da capacidade de retenção de água de um solo é fundamental para a descrição do fluxo de água através dele e para o adequado manejo da irrigação.
Wanderley Andrade Costa, Carlos Alberto da Silva Oliveira, Eiyti Kato   +2 more
doaj   +1 more source

A Coupled AquaCrop–Richards Model for Improved Crop Yield Prediction Through Physically Based Soil Water Dynamics

Irrigation and Drainage, EarlyView.
ABSTRACT Crop modelling is essential for agricultural water management but often relies on simplified water balance routines that limit representation of soil moisture dynamics. To address this limitation, we developed a coupled model that integrates the 1‐D Richards equation, solved using a finite difference method into the FAO AquaCrop.
Krishna Panthi, Vidya Samadi, Carlos Toxtli   +2 more
wiley   +1 more source

HYPROP measurements of the unsaturated hydraulic properties of a carbonate rock sample. [PDF]

, 2020
The unsaturated hydraulic properties provide important theoretical and practical information about fluid flow in soils and rocks for a range of soil, environmental and engineering applications.
Lipovetsky, Tatiana, LIPOVETSKY, T., ALVES, J. L. D., Alves, José L.D., TEIXEIRA, W. G., van Genuchten, Martinus Th, ZHUANG, L., COUTO, P., May Pontedeiro, Elizabeth, MORICONI, L., Pontedeiro, Elizabeth May, van Genuchten, Martinus Th., VAN GENUCHTEN, M. TH., Couto, Paulo, van Genuchten, Martinus Th. [UNESP], BOYD, A., Boyd, Austin, Hydrogeology, Environmental hydrogeology, Moriconi, Luca, Zhuang, Luwen, PONTEDEIRO, E. M., Teixeira, Wenceslau G.   +22 more
core   +1 more source

Sewage Sludge and Cashew Bagasse Biochars Promote Changes in Selected Physical Attributes Related to the Structure of Degraded Dryland Soil

Journal of Plant Nutrition and Soil Science, EarlyView.
This study evaluated biochars from co‐pyrolysis of sewage sludge and cashew residues on physical quality of a degraded loamy sand soil. SPB applied at 20 Mg ha−1 reduced bulk density by 7.74%, whereas most porosity attributes were driven by soil reconsolidation rather than biochar. Aggregate stability varied with biochar type, with SPB promoting larger
João Marcos Rodrigues dos Santos, Ícaro Vasconcelos do Nascimento, Gilvanete da Silva Henrique, Tiago da Costa Dantas Moniz, Francisco Luan Almeida Barbosa, Alexandre dos Santos Queiroz, Adriana Guirado Artur, Mirian Cristina Gomes Costa, Helon Hébano de Freitas Sousa, Odair Pastor Ferreira, Laís Gomes Fregolente, Antônio Gomes de Souza Filho, Romildo Lopes de Oliveira Filho, Arthur Prudêncio de Araujo Pereira, Jaedson Cláudio Anunciato Mota   +14 more
wiley   +1 more source

Integrating X‐Ray Computed Tomography and Hydraulic Properties for Soil Quality Assessment Under Soil Compaction

Land Degradation &Development, EarlyView.
ABSTRACT Soil compaction poses a significant threat to soil quality and sustainability, necessitating advanced assessment methods. We hypothesized that incorporating x‐ray computed tomography (XCT)‐derived pore characteristics with hydraulic properties would significantly enhance the development of a soil quality index (SQI) under soil compaction ...
Ahmed Ehab Talat, Xiayu Cao, Meijun Jin, Jian Wang   +3 more
wiley   +1 more source

De waarde van embedded software is beperkt [PDF]

, 2006
De belangstelling voor embedded software in Nederland is groot. Maar, constateert Michiel van Genuchten, de waarde ervan voor bijvoorbeeld de industrie of een lijnmanager is beperkt.
Genuchten, van, M.J.I.M., Genuchten, MJIM Michiel van   +1 more
core  

Decoupling of particles and dissolved iron downstream of Greenlandic glacier outflows [PDF]

, 2021
Glaciers can be a significant and locally dominant source of iron (Fe), a biologically essential micronutrient, in high latitude coastal seas. The vast majority of this glacial Fe delivery is associated with particles, yet the speciation of the solid ...
van Genuchten, C.M., van Genuchten, C. M., Rosing, M. T., Hopwood, M.J., Rosing, M.T., Liu, Te, Hopwood, M. J., Genuchten, C.M. van, Krause, J., Meire, L., Liu, T., Hopwood, Mark J.   +11 more
core   +1 more source