The saturated hydraulic conductivity of soil is needed for deteriming the agricultural and hydrological processes. The measurement techniques used to estimate such property remain hampered by extensive labor and time constraints. Both emitter discharge rate and steady saturated radius emerged from point source trickle irrigation on the soil surface were used to determine the saturated hydraulic...

The study data draws on the drainage design for Hammam agricultural project (HAP) and Eshkeda (EAP), located in south of Libya, north Sahara Desert. results this are applicable to other arid areas. This aims improve prediction saturated hydraulic conductivity (Ksat) enhance efficacy system data-poor Artificial Neural Networks (ANNs) were developed estimate Ksat compared with empirical regressio...

be described adequately by a soil hydraulic model that is a closed-form equation with a certain number of paramParametric pedotransfer functions (PTFs), which predict parameeters, e.g., Brooks and Corey or van Genuchten equation. ters of a model from basic soil properties are useful in deriving continuous functions of soil properties, such as water retention curves. The A parametric approach is...

Exact estimates of soil clay (<2 μm) and silt (2-20 μm) contents are crucial as these size fractions impact key soil functions, and as pedotransfer concepts based on clay and silt contents are becoming increasingly abundant. We examined the effect of removing soil organic matter (SOM) by H2O2 before soil dispersion and determination of clay and silt. Soil samples with gradients in SOM were retr...

Atterberg limits are broadly used for engineering and geology purposes as well in agricultural environmental applications. Laboratory methods their determination are, however, laborious, destructive tool dependent. The aim of this study was to test the feasibility using visible near-infrared spectroscopy (vis–NIRS) a fast accurate alternative conventional measurements (LL PL) PI 229 geographica...