Soil variability
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Part 2 of ebook "GIS applications in agriculture" provides readers with contents including: Chapter 6 - Map quality assessment for site-specific fertility management; Chapter 7 - Gleaning more information from yield data; Chapter 8 - Soil salinity mapping using ArcGIS; Chapter 9 - Using GIS and on-the-go soil strength sensing technology for variable-depth tillage assessment; Chapter 10 - Collocating multiple self-generated data layers;...
103p daonhiennhien 03-07-2024 1 1 Download
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Ebook Facts on file science experiments: Weather and climate experiments - Part 1 includes contents: Chapter 1: the heat-retaining properties of water and soil, chapter 2: student-constructed weather stations, chapter 3: how are snowflakes formed?, chapter 4: modeling el niño, chapter 5: factors that affect evaporative rates, chapter 6: sources of carbon dioxide in the air, chapter 7: levels of ultraviolet radiation in local ecosystems, chapter 8: variables that affect cloud formation, chapter 9: what type of hair makes the most accurate hygrometer?.
67p haojiubujain03 09-08-2023 8 4 Download
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Continued part 1, part 2 of ebook "Reliability and statistics in geotechnical engineering" provides readers with content including: site characterization; classification and mapping; soil variability; spatial variability within homogeneous deposits; random field theory; spatial sampling; search theory; reliability analysis and error propagation;...
305p dieptieuung 19-07-2023 10 3 Download
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Part 1 of ebook "Reliability-based design in geotechnical engineering: Computations and applications" provides readers with content including: numerical recipes for reliability analysis – a primer; spatial variability and geotechnical reliability; practical reliability approach using spreadsheet; Monte Carlo simulation in reliability analysis; practical application of reliability-based design in decision-making; randomly heterogeneous soils under static and dynamic loads;...
272p dieptieuung 19-07-2023 8 2 Download
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Terzaghi’s 1D consolidation theory is commonly used for evaluation of consolidation characteristics of soft soils. Several simplifying assumptions have been made to resolve differential equation for one-dimension consolidation. This paper presents a generalized theory for onedimensional consolidation of soft soil with variable compressibility and permeability.
5p vijaguar 16-11-2022 9 3 Download
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This work illustrates the challenges of extrapolating laboratory results to onsite determinations and suggests that more robust methods are needed in calculating ecological risk assessments for indigenous animals, particularly for legacy sites with substantial spatial variability.
9p thebadguys 15-01-2022 17 1 Download
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ation. However, their residues persisted for more than 30 days with variable half-lives ranged from 2.6 to 30 days. The toxicological study revealed that metabolites C, E and F were highly pernicious to soil enzymes sucrase, catalase, urease and dehydrogenase. PYR do not posed any detrimental effects in adult honeybees. Considering the persistence behavior and toxicological consequences of metabolites, further investigations are needed for preventing their harmful effect on non-target organisms and associated environment.
14p thebadguys 15-01-2022 11 0 Download
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The present study evaluated the effect of different colored plastic mulching viz. olive polythene film (OPF), silver polythene film (SPF), white polythene film (WPF), black polythene film (BPF) and blue polythene film (BLPF) on soil properties, growth, physiology, biochemical and mineral nutrient composition in onion bulbs. Soil properties at 0–10 cm depth are variably affected by colored polythene film mulches.
8p schindler 30-12-2021 10 0 Download
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Soil has high spatial variability. Under the change of water level, soil nutrient element content and enzyme activity do not show regular changes. Therefore, the effects of biological metabolism on soil nutrient element content and enzyme activity in the adult stage of Metasequoia glyptostroboides were proposed. The characteristics of the soil were extracted, the irreversibility, accumulation, concealment and refractory rationality of the nutrient element content in the soil were expounded.
9p hanthienngao 30-11-2021 13 1 Download
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Know the runoff volume for a watershed as runoff is the most important hydrological component for a design of any hydrologic structure and especially in the area of water scarcity (Ibrahim Kaleel et al., 2018). In carrying out water availability studies, it is always appropriate to use the observed runoff data.
17p cothumenhmong11 11-05-2021 8 1 Download
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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
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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
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Yield is the main objective for every plant breeder and the better and stable performance of yield in all environmental conditions is necessary and it can be accessed based on the performance and genetic variability of the varieties. The present investigation was carried out with twenty-one lentil genotypes to study the genetic variability in acidic soils of Manipur for 11 characters during Rabi, 2018.
7p chauchaungayxua10 19-03-2021 10 2 Download
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The Knowledge of spatial-variability is critical for site specific nutrient management in soil fertility. Soil sample (149) were gotten from surface from 10 selected sites for preparing precise digital maps using point, line and polygon tools of the GIS (TNTmips 2010) software. Soil spatial variability typically defines variation in soil properties in surface soil such as fertility, pH, EC, soil organic carbon (OC), free CaCO3, mineralizable N,P2O5, K2O and S.
10p chauchaungayxua11 23-03-2021 11 2 Download
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Investigation indicates that valuable effects of biochar could be obtained if it was applied with mycorrhiza. Combined application of biochar (10 t ha-1 soil), phosphorus along with mycorrhiza produced significantly higher uptake of nutrients in baby corn. Biochars are highly variable in nutrient composition and availability, which are determined by types of feedstock and pyrolysis conditions. The results suggest that high-ash biochars with phosphorus are potential P sources with high-agronomic efficiency.
8p cothumenhmong9 18-01-2021 15 2 Download
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The present investigation was comprised of 30 lines of rice Germplasm along with three checks viz., Narendra Usar 3, Sarjoo 52 and IR 28. The material, comprising indigenous as well as exotic germplasm lines, exhibited wide spectrum of variation for various agronomic and morphological characters.
5p gaocaolon9 22-12-2020 9 2 Download
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Soil aggregates and organic matter are considered to be important indicators of soil quality. The objective of this review study was to determine agricultural practices effects on the distribution of soil organic carbon (SOC) associated with aggregate-size fractions. Depth distribution of soil organic carbon (SOC) fractions depends on the efficiency of agro‐ technical managements.
21p trinhthamhodang9 16-12-2020 7 2 Download
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Soil pH, EC and Organic Carbon are the essential parameters used as the primary level health status of the soils. In this context, detailed study over soil pH, EC and OC was done for different panchayats of Sabour block of Bhagalpur district. 80 composite surface soil samples (0-15cm) using GPS receiver from different location of fourteen Panchayats of Sabour block were collected during the months of May and June, 2019.
8p trinhthamhodang1216 19-11-2020 18 2 Download
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The genetic variability, heritability and association among yield and related traits in mungbean. Second is to find the characters influencing the yield and clustering pattern of the genotypes.
10p chauchaungayxua8 03-10-2020 7 2 Download
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Considering these factors, the present study was undertaken to evaluate the performance of 2 genotypes under different inter-row spacing and N levels in terms of productivity, economics and changes in soil physicochemical properties over the experimental period.
10p cothumenhmong7 09-09-2020 10 1 Download