نتایج جستجو برای: soil penetration resistances

تعداد نتایج: 220610  

ژورنال: علوم آب و خاک 1999
میرلوحی, آقافخر, حاج عباسی, محمدعلی , صدرارحامی, محمد,

A two-year study (1996-97) was conducted to verify tillage effects on several soil properties and corn yield. The soil (fine loamy, Thermic, typic Haplargids) was treated by conventional (CT) and no-till (NT) systems. Soil organic matter (OM), mean weight diameter (MWD), penetration resistance (Cl), bulk density (BD), total nitrogen (TN) and aggregate size distribution at depths of 0-20 and 20-...

میرلوحی, آقافخر, حاج عباسی, محمدعلی , صدرارحامی, محمد,

A two-year study (1996-97) was conducted to verify tillage effects on several soil properties and corn yield. The soil (fine loamy, Thermic, typic Haplargids) was treated by conventional (CT) and no-till (NT) systems. Soil organic matter (OM), mean weight diameter (MWD), penetration resistance (Cl), bulk density (BD), total nitrogen (TN) and aggregate size distribution at depths of 0-20 and 20-...

Journal: :Applied sciences 2023

Polysaccharide biopolymers have been shown to be alternatives established dust suppressants. This study investigates the potential of 14 polysaccharides and proteins from diverse botanical (corn, pea, wheat, cellulose, potato, fava bean) animal (pig, chicken, cow) sources as suppressants on two mine soils (medium-grained sand fine-grained silica sand). Results laboratory tests demonstrate that ...

2004

Saturated fine-grained soils can undergo large settlements over a long period of time. Therefore, the estimation of both the total settlement and the rate of change of cohesive soils under field loading is essential for geotechnical engineering design and analysis. The total settlement can be determined from deformation moduli such as the tangent constrained modulus, M, while the time rate of s...

باغبانان, علیرضا, رازانی, مهدی, رمضانیفر, فرشاد, هاشم الحسینی, حمید,

Archaeological sites in desert areas are at risk for destroying and reburied with sand dunes by sand storms. One of the most important issues for archaeologist and conservators in these regions are maintenance of archaeological remains, during the excavation process and after it, There are several sand dune stabilization methods such as mechanical dune stabilization, mulch or protective screen,...

Journal: :Plant physiology 1975
M R Kaufmann

The response of xylem pressure potential of Engelmann spruce (Picea engelmannii Engelm.) to environmental factors was studied in the natural subalpine environment. Data were analyzed in the context of a leaf water potential model based upon the van den Honert model for water transport through the soil-plant-atmosphere continuum. At soil temperatures of 10 to 15 C, xylem pressure potential decre...

2013
Mahmood Ahmad Qaiser Iqbal Fayaz Ahmad Khan

This research paper presents a compendium of the geotechnical sub-soil data profiling and zoning of the major urban settlements of Peshawar using Geographic Information System. Significant geotechnical properties of the under study area soils i.e., Zone 5 & 6 in Peshawar were assessed through one hundred and three different standard penetration test reports up to the depth of 1 m and 3 m. The q...

1999

Grazing cattle on forest plantations in the interior of British Columbia is a common practice. Soil compaction can occur following cattle use, although this may vary with stocking rate, vegetation type and age, soil type, soil water content, and climate. Several studies have shown that increased soil compaction can have a negative impact on growth of young tree seedlings and on productivity in ...

2007
Geraldo C. Oliveira Eduardo C. Severiano Carlos R. Mello

This study aims to evaluate soil moisture and bulk density effects on penetration resistance dynamics of Dark Red Latosol, located in the Microregion of Goiânia, Goias. Area under rotating pasture were sampled 1) in lines and 2) between lines; 3) pasture renewal area; 4) area under Central Pivot; 5) area under no-tillage and 6) forest. Penetrometry tests were done for three different soil moist...

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