Results 241 to 250 of about 1,838,131 (293)

Study on Improvement of Soil Porosity

2022
In order to further improve soil porosity and improve soil physical properties, the raw materials, formula and application methods of soil amendment were optimized, and the pH and porosity of yellow soil were compared and analyzed after application of soil amendment.
YAN Xiong, LI Wenzhao, WANG Xuhui, WANG Qiuyan, YANG Ling, ZHAO Jun, YAN Xiong, LI Wenzhao, WANG Xuhui, WANG Qiuyan, YANG Ling, ZHAO Jun   +11 more
openaire   +1 more source

Analysis of porosity in a tilled “crusting soil” in Zimbabwe

Geoderma, 1993
Abstract Samples were collected in a tilled “crusting soil” from zones with different structures and their porosity was analysed with mercury porosimetry. The results showed three types of elementary pore volumes that differ in both the size and origin of the pores.
Bruand A, D'Acqui LP, Nyamugafata P, Darthout R, Ristori GG   +4 more
openaire   +2 more sources

Organic carbon and soil porosity

Australian Journal of Soil Research, 2003
The %C within the top sandy 0.15 m of a sodic Hydrosol under native trees consisted of a constant %C in uncharged organic matter and a %C in negatively charged organic matter decreasing linearly with depth, as did the specific volume of the soil. The kaolinitic clay present was strongly bonded together.
W. W. Emerson, D. McGarry
openaire   +1 more source

Impact of long‐term sub‐soiling tillage on soil porosity and soil physical properties in the soil profile

Land Degradation & Development, 2021
AbstractLong‐term conventional tillage leads to soil compaction and formation of a plough layer, which affects soil physical properties, transport of water, and growth of crop roots toward deeper soil, resulting in soil degradation and a decline in crop productivity.
Yonghui Yang, Jicheng Wu, Shiwei Zhao, Yongping Mao, Jiemei Zhang, Xiaoying Pan, Fang He, Martine van der Ploeg   +7 more
openaire   +1 more source

CP of Steel in Soil: Temporospatial pH and Oxygen Variation as a Function of Soil Porosity

CORROSION 2021, 2021
Abstract This paper documents an investigation of pH variations in water saturated sandy soil with steel samples under impressed current cathodic protection (CP). The aim of this work was to evaluate the temporal and spatial variation in pH and oxygen under different protection current density and different soil porosity ...
Martinelli-Orlando, Federico, Angst, Ueli   +1 more
openaire   +1 more source

Predicting Porosity of Fired Soil Aggregates

Journal of Transportation Engineering, 1984
The porosity of preformed fired soil aggregates for pores larger than 0.05 μm in radius (POR), which mainly determines the potential of bitumen absorption, cannot be successfully correlated to a single soil property. Multiple regression analysis shows a significant correlation of aggregate porosity POR with the following soil parameters: diameter ...
Alamgir M. Hoque, Jose G. Cabrera
openaire   +1 more source

Porosity and soil water properties of Caribbean volcanic ash soils

Soil Use and Management, 2000
Abstract. Volcanic ash soils are generally recognized as soils with excellent and stable physical properties. Here we characterized the porosity and water properties of volcanic ash Andosols and Nitisols from Guadeloupe in contrasting banana systems: (1) perennial crop without mechanization, (2) mechanized and ...
Dorel, M., Roger-Estrade, J., Manichon, H., Delvaux, Bruno   +3 more
openaire   +3 more sources

CHANGES IN SOIL POROSITY IN REMOLDED SOILS TREATED WITH POULTRY MANURE

Soil Science, 1987
We studied the modification induced in soil porosity, pore shape, and pore-size distribution in three soils of different textures treated with a poultry manure in laboratory trials, and we tested the effect of wetting and drying cycles. Porosity measurements were carried out on soil thin sections by using the electrooptical image-analysis (Quantimet ...
M. PAGLIAI, M. LA MARCA, G. LUCAMANTE
openaire   +1 more source

Soil Gas Permeability as Influenced by Soil Gas‐Filled Porosity

Soil Science Society of America Journal, 1992
Abstract The need to characterize the fundamental gas flow properties of soils has taken on new significance in recent years with the advent of induced soil venting as a remediation technique for contaminated soils.
Kevin P. McCarthy, Kirk W. Brown
openaire   +1 more source

Influence of soil porosity on water use in Pinus taeda

Oecologia, 2000
We analyzed the hydraulic constraints imposed on water uptake from soils of different porosities in loblolly pine (Pinus taeda L.) by comparing genetically related and even-aged plantations growing in loam versus sand soil. Water use was evaluated relative to the maximum transpiration rate (E crit) allowed by the soil-leaf continuum.
U G, Hacke, J S, Sperry, B E, Ewers, D S, Ellsworth, K V R, Schäfer, R, Oren   +5 more
openaire   +2 more sources