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Showing 1 to 20 of 353 for “"Bulk density"”.
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Discrete element method simulation of wheat bulk density
Bulk density indicates how much weight of material can be packed in a bin, truck, or any container used for storage or transportation. Stored grain bulk density is higher than the standard bushel test weight because of the overburden pressure and handling practices. The material and equipment …
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Comparison of Soil Bulk Density After Poultry Litter Application
… effects of poultry litter application on soil bulk density. A randomized split block design was used for this study. The soil was a Crider silt loam (Typic Paleudalf). Poultry litter treatments were compared with inorganic fertilizers. The same basic fertility treatments were applied in this …
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Correlation of bulk density and strength of light weight ceramic bodies
… materials. Specifically the relationship of bulk density and strength was investigated and an empirical equation for the type Y=aX<sup>b</sup>, where Y represents unit crushing strength and X represents bulk specific gravity, was found to agree with the data. It was found that a rational …
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Tillage effects on soil-water-air matrix and prediction of soil bulk density from cone index data
… the long-term effects of the no-till method on bulk density, capillary porosity, noncapillary porosity, void ratio, and cone index of the soil. Although tillage affected cone index significantly, moisture variations caused difficulty in interpreting the results. No statistically significant …
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Influence of soil bulk density and matric potential on relative gas diffusivity and urea/nitrate-derived N₂O and N₂ losses
… animal stocking rates result in increased soil bulk density (ρb), increases in water‐filled pore space (WFPS) and reduced gas diffusion into and out of the soil. These changes in soil physical properties increase the potential for N₂O emissions via denitrification from soil due to enhanced …
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Multipass effects of wheel and track type vehicles on soil compaction
… the study two procedures commonly used for soil bulk density determination were also compared. Treatments at the following levels were applied: i) Soil moisture: Two levels ii) Vehicle type: wheel and track type iii) Traffic intensity: 0, 1, 3, and 9 passes. Each treatment combination was …
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Evaluation of triple-frequency radar retrieval of snowfall properties using coincident airborne in-situ observations during olympex
… ground-based observations suggest that particle bulk density and characteristic size can be retrieved from the DFR plane. This is the first study to evaluate the retrieval of particle shape, bulk density and characteristic size using airborne triple-frequency radar observations coincident with …
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Comparative effects of conservation tillage systems on selected soil properties and yields of groundnut(arachis hypogaea)
… soil carbon, microbial activity and reduced bulk density over time. However, the effects in groundnuts such as plant development, agronomic aspects such as biological nitrogen fixation and yields under conservation systems remain scanty. A study was carried out during the 2014/15 cropping …
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Comparative effects of conservation tillage systems on selected soil properties and yields of groundnut(arachis hypogaea)
… soil carbon, microbial activity and reduced bulk density over time. However, the effects in groundnuts such as plant development, agronomic aspects such as biological nitrogen fixation and yields under conservation systems remain scanty. A study was carried out during the 2014/15 cropping …
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The role of living plant roots and cattle manure as a soil amendment in the alleviation of compacted coal mine soils
… rooting depths, consequently, reductions in bulk density. The focus of this study were to monitor the root biomass of irrigated Tall Fescue (F. arundinacea cv Dovey) and dryland Smuts Fingergrass (D. eriantha cv Irene) on mine soils, and to describe soil bulk density and soil nutrient …
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The effects of DDGS inclusion on pellet quality and pelleting performance
… energy consumption, production rate, and bulk density served as the response criteria. In Exp. 1, DDGS were substituted on an equal weight basis for corn, with substitution levels of 10%, 20%, 30%, and 40%. The diet was not adjusted to maintain equal nutrient levels across the treatments. …
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Design and evaluation of a biosecure composting system to dispose of swine mortalities during a foreign animal disease outbreak
… 0.96 to 0.99) was found between permeability and bulk density, as increasing bulk density resulted in a decrease in permeability. A linear relationship was found between the materials’ air-filled porosity and bulk density, in which increasing bulk density resulted in a decrease in air-filled …
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Initial Assessment of Canopy Fuel Factors in Forested Areas of the Netherlands
… estimate fire behavior. Data to estimate canopy bulk density for modelling canopy fire behavior were collected in the Netherlands for Douglas-fir (<em>Pseudotsuga menziesii </em>(Mirb.) Franco), Scots pine<em> </em>(<em>Pinus sylvestris </em>L.), and black pine<em> </em>(<em>Pinus nigra …
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Quantification of short term interactions between soil and fungi
… variables such as aggregate-size and soil bulk-density on key descriptors of the soil pore network. Finally, a fungal growth model was used to quantify to what extent soil structure mediated by bulk-density affected fungal growth dynamics.<br/> The experimental work showed that despite high …
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Changes in Streambank Erodibility and Critical Shear Stress Due to Surface Subaerial Processes
… cycles, soil moisture, soil temperature, bulk density, soil erodibility, critical shear stress, and other atmospheric conditions that could impact bank erosion potential. Statistical tests, including a nonparametric alternative to ANOVA and multiple comparison tests, were used to determine …
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A study of the variable factors controlling spray drying
… conditions affected the moisture content, bulk density, and particle size of a spray dried material. These variables were studied in a unit constructed at the Virginia Polytechnic Institute according to plans based on available information, and cut and try experimental work. Sodium sulphate …
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Effect of soil structure on temporal and spatial dynamics of bacteria
… Using repacked microcosms, the effect of bulk-density, aggregate sizes and water content on growth and distribution of introduced <i>Pseudomonas fluorescens</i> and <i>Bacillus subtilis</i> bacteria was determined. Soil bulk-density and aggregate sizes were altered to manipulate the …
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Use of herbicides, tillage, and grazing cattle for establishment of corn in rotation with alfalfa and rye
… (P<0.05) corn plant populations and soil bulk density compared to shorter grazing periods. Grazing prior to rye jointing increased (P <0.05) soil bulk density and corn plant populations, and decreased (P<0.05) rye biomass compared to no spring grazing. Autumn disking decreased (P<0.05) …
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Soil Buoyancy as a Potential Indicator of Hurricane Susceptibility in Louisiana Marshes
… to hurricane damage. This study analyzes soil, bulk density, plant composition, and buoyancy of restoration projects and sites adjacent to those that experienced land loss during Hurricanes Katrina and Rita. Results indicate that high organic matter percentages in marsh soil increases hurricane …
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