Physical properties of soil

Part 1 of ebook "Soil physics with Python: Transport in the soil–plant–atmosphere system" provides readers with contents including: Chapter 1 - Introduction; Chapter 2 - Basic physical properties of soil; Chapter 3 - Soil gas phase and gas diffusion; Chapter 4 - Soil temperature and heat flow; Chapter 5 - Soil liquid phase and soil–water interactions; Chapter 6 - Steady-state water flow and hydraulic conductivity; Chapter 7 - Variation in soil properties; Chapter 8 - Transient water flow;...

211p daonhiennhien 03-07-2024 1 1   Download

Ebook "Fundamentals of soil science (8th edition)" revision of a bestselling text shows that soil is three-dimensional and dynamic. This concept is developed in the first two chapters and is built on throughout the book. Chapters 3 through 7 explore soil physical properties and water, with expanded coverage of tillage and traffic and an increased emphasis on water and wind erosion processes. Chapters 8 through 11 discuss the biological aspects of soils as well as their mineralogical and chemical properties.

382p giangdongdinh 28-05-2024 4 1   Download

This study aims to evaluate the effect of fire on soil properties at Zone A5, Tram Chim National Park, Tam Nong district, Dong Thap province. Findings indicated that soil type was acid sulfate, soil structures were clay, clay-silt and silt-clay. pH was low while moisture was high. Electrical conductivity and bulk density were in the tolerance range for the Eleocharis community.

9p viohoyo 25-04-2024 5 2   Download

Ebook "Antarctic terrestrial microbiology: Physical and biological properties of antarctic soils" brings together many of the world’s leading experts in the fields of Antarctic terrestrial soil ecology, providing a comprehensive and completely up-to-date analysis of the status of Antarctic soil microbiology. Antarctic terrestrial soils also harbor specialized ‘refuge’habitats, where microbial communities develop under (and within) translucent rocks.

324p manmanthanhla0201 26-02-2024 3 1   Download

Part 2 book "Principles of soil physics" includes content: Soils moisture potential; water flow in saturated soils; water flow in unsaturated soils; water infiltration in soil; soil water evaporation; solute transport; soil temperature and heat flow in soil; soil air and aeration; physical properties of gravelly soils; freezing and thawing effects, swelling soils, and other special problems.

384p muasambanhan07 08-02-2024 2 0   Download

Suffusion is one of the four types of internal erosion and accounts for 46% of erosion phenomena in earth dams. Suffusion is an erosion of fine particles inside the soil structure that move out of the voids between coarse particles caused by permeability flow. Identification of internal erosion is necessary to mitigate the loss of humans and property as underground erosion occurs.

6p viwarmachine 01-07-2023 4 3   Download

This study was carried out to investigate the impacts of bacterial inoculation on texturally different soil samples under greenhouse conditions. Sandy loam (SL), clay loam (CL), and clay (C) textured soils were inoculated with Bacillus arenosi K64 (B. arenosi), Bacillus megaterium M3 (B. megaterium), and Bacillus subtilis OSU 142 (B. subtilis) isolates and then incubated at 5 different periods [I (20 days), II (40 days), III (60 days), IV (80 days), and V (100 days)].

14p lyhuyenthu 31-01-2023 6 2   Download

Part 1 of ebook "Elements of the nature and properties of soils (Third edition)" provide readers with content about: the soils around us; formation of soils from parent materials; soil classification; soil architecture and physical properties; soil water: characteristics and behavior; soil and the hydrologic cycle; soil aeration and temperature; the colloidal fraction: seat of soil chemical and physical activity;...

325p hanlinhchi 11-11-2022 13 3   Download

Continued part 1, part 2 of ebook "Soil sampling and methods of analysis (Second edition)" provide readers with content about: soil organic matter analyses; soil physical analyses; soil water analyses; unsaturated hydraulic conductivity: laboratory tension infiltrometer; unsaturated hydraulic properties: field tension infiltrometer;...

644p hanlinhchi 11-11-2022 16 3   Download

Soil type is a vital determinant of soil fertility because of its characteristic biological, chemical, and physical properties. However, the soil fertility of upland soil is probably changed by different agricultural management practices regardless of soil type. This study investigated the features of soil fertility (bacterial biomass, total carbon (TC), and total nitrogen (TN)) in upland fields in Japan. One thousand soil samples from different soil types were collected from upland fields located on 36 prefectures in Japan.

8p schindler 30-12-2021 9 0   Download

Polymer blending as an efficient method for blending at least two polymers is usually used to create new materials with desirable physical properties. This article focuses on the biodegradability evaluation of polypropylene (PP) fibers modified with disposable recycled poly(lactic acid) (r-PLA) plastic flakes. Biodegradable modified PP fibers containing 30% r-PLA were prepared by melt spinning process and evaluated with different methods of biodegradation assays.

11p tudichquannguyet 29-11-2021 6 1   Download

In this study, 341 Bacillus sp. strains were isolated from agricultural soils of Turkey. The potent extracellular lipase producer was selected. It was identified by 16S rRNA, named as Bacillus cereus ATA179. Optimal nutritional and physical parameters for lipase production were determined. Sucrose as the carbon source, (NH4 )2 HPO4 as the nitrogen source, CaCl2 as the metal ion were obtained. The best results of physical parameters were stated at 45°C, pH 7.0, shaking rate 50 rpm, inoculation amount 7% and inoculum age 24 h.

14p thiencuuchu 27-11-2021 17 1   Download

Calotropis procera is a wild species that is drought-resistant and plays a number of economic and ecological uses. The species is important in soil fertility improvement, pollution control by monitoring sulphur dioxide emissions in the air and suitable indicator of exhausted soil. This study was undertaken in drylands of South Eastern Kenyato evaluate the species‟ soil ecology and ability to bioaccumulate heavy metalsThe objectives of the research were to determine the soil chemical and physical properties for survival of C. procera and to determine the ability of C.

12p chauchaungayxua12 29-07-2021 16 1   Download

In the study soil surveys conducted and GPS based soil samples were collected from each domain viz., Bhopal, Hoshangabad, Vidisha and Jabalpur of AESR 10.1 region.and for bulk density (BD), total porosity (TP), particle size distribution (Sand, Silt, Clay), analyzed then aggregate stability (AS) and structural stability index (SSI) were estimated in the Department of Soil Science and Agricultural Chemistry Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur during 2018-2020.

28p cothumenhmong11 11-05-2021 13 1   Download

This paper firstly studies how reliable the SPT data can predict the physical and mechanical properties; secondly, the soil strength is determined in terms of corrected N-SPT values, and finally the bearing capacity of a pile penetrating cohesion soil.

20p nguaconbaynhay11 16-04-2021 17 1   Download

A field experiment was conducted during Kharif season of 2018 in Alfisols to study grain yield of hybrid rice varieties as influenced integrated nutrient management. Results revealed that V1 (IRH-103) found significantly highest N, P and K contain in grain and straw of than V2 (IRH-111) and in different nutrient management N5 (150% RDF through inorganic) was observed significantly higher N, P and K contain in grain and straw.

9p chauchaungayxua10 19-03-2021 18 2   Download

A long term field experiment was conducted since kharif 2015 for evaluating the effect of inorganic and organic sources of nutrients on soil physical properties and productivity on direct seeded rice ( Oryza satia L.) – MTU1010 under rainfed midland situation at Bastar plateau zone at S. G. College of Agriculture and Research Station, Jagdalpur, Chhattisgarh. Random block design was used with twelve treatments and four replications to carry out experiment. The full recommended dose of fertilizer for rice crop was 100kg ha-1 Nitrogen, 60 kg ha-1 phosphorus and 40 kg ha-1.

6p chauchaungayxua10 18-03-2021 13 2   Download

Currently there is a significance interest and emphasis on the shift to the conservation and no-tillage methods for the purpose of controlling erosion process (Adugna, 2019). Tillage is an effective farm activity to improve soil tilth and soil physical conditions (Khan et al., 2010).

6p chauchaungayxua10 18-03-2021 15 1   Download

The use of resource management technologies such as zero tillage, which can affect the soil properties, can restore soil health that is degrading at a rapid pace due to intensive agriculture, inefficient and imbalanced use of fertilisers, high-yielding crops, the use of heavy machinery, excessive tillage, etc. The health of the soil can be measured by the capacity of microorganisms that can act as early warning signals. To improve soil quality, zero tillage is recommended globally and has significant effects on soil microbial communities.

8p chauchaungayxua11 23-03-2021 15 1   Download

A large population of rural or hills of Uttarakhand is still facing the energy crisis in the household as well as for small and medium scale industries due to insufficient supply of fuel and electricity. The supply of coal and LPG is irregular for far-flung areas which make them bound to depend solely on wood for fuel. Therefore, a study was undertaken to evaluate the physical and thermal properties of pine needle biochar briquettes to check its feasibility as sustainable solid biofuel for the hills of Uttarakhand.

16p chauchaungayxua10 18-03-2021 14 1   Download