the studies carried out over 2010-13 involved a static field experiment initiated in 1999 at brody research station of the poznan university of life science, poland. the soil tillage systems for winter wheat were compared on a soil classified as albic luvisols. the aim of experiments was to evaluate impact of ploughless soil tillage on some soil physical, chemical, biological properties and win...

The unsaturated soil hydraulic functions involving the soil–water retention curve (SWRC) and the hydraulic conductivity provide useful integrated indices of soil quality. Existing and newly devised methods were used to formulate pedotransfer functions (PTFs) that predict the SWRC from readily available soil data. The PTFs were calibrated using a large soils database from Hungary. The database c...

A computer simulation of cone penetration in layered soil was carried out using axisymmetric finite element (FE) to investigate soil deformation and soil hardpan prediction during cone penetration. The FE analysis was performed in ABAQUS, commercially available FE package. Soil was considered as a non­ linear elastic plastic material modeled using Drucker Prager material model with hardening op...

Accumulation of beef cattle manure on feedlot pen surfaces generates large amounts of dissolved solutes that can be mobilized by water fluxes, affecting surface and groundwater quality. Our objective was to examine the long-term impacts of a beef cattle feeding operation on water fluxes and manure leaching in feedlot pens located on sandy loam soils of the subhumid Sandy Pampa region in Argenti...

Abstract A field experiment was implemented at the Agricultural Research Station / college of Agriculture Basra University, Karma Ali, during year 2021 to study effect adding organic matter in efficiency salts leaching soil affected by salinity using three types residuses (cows, rice, and miaze ) two levels From addition (2 % 4 %), where process took five stages, laboratory measurements were pe...

Mechanized forest harvest operations induce changes in soil physical properties, which have the potefitial to impzct soil sustai~ability and forest productivity. The assessment of soil compaction and its spatial variability has been determined previously through the identification and tabulation of visual soil disturbance classes and soil physical changes associated with each disturbailce class...

Increase in the bulk density of a Grey Clay subsoil by infillings of cracks by topsoil Summary Increases in soil bulk density beyond the optimum reduce land productivity and, where soil is affected, may be difficult to remedy. Elucidating the mechanisms causing compaction is a prerequisite to sustainable management of fragile soils. We examined a dense grey soil in Western Australia in which th...

--Six levels of site preparation were applied to replicated 0.8-hectare plots at the Hitchiti fZ;~Z;i~ntal Forest on the Piedmont Plateau in central . Treatments ranged in intensity from handclearing to shearing and chopping to rootraking and disking with fertilization and herbicides. Soils were sampled before treatment applications and after 1 and 2 years. Composited bulk samples from O-15 and...