A5034268083- Soil Carbon and Nitrogen Dynamics
- Agriculture, Soil, Plant Science
- Atmospheric and Environmental Gas Dynamics
- Plant Water Relations and Carbon Dynamics
- Isotope Analysis in Ecology
- Legume Nitrogen Fixing Symbiosis
- Soil and Unsaturated Flow
- Biofuel production and bioconversion
- Analytical Chemistry and Sensors
- Clay minerals and soil interactions
- Composting and Vermicomposting Techniques
- Groundwater and Isotope Geochemistry
- Plant Stress Responses and Tolerance
- Mitochondrial Function and Pathology
- Nanocomposite Films for Food Packaging
- Plant tissue culture and regeneration
- Phosphorus and nutrient management
- Metabolomics and Mass Spectrometry Studies
- Agricultural Science and Fertilization
- Spectroscopy and Chemometric Analyses
- Hydrology and Watershed Management Studies
- Radioactive element chemistry and processing
- Microbial Community Ecology and Physiology
- Soil Moisture and Remote Sensing
- Soil Geostatistics and Mapping
Chungbuk National University
2010-2025
National Institute for Agro-Environmental Sciences
2005-2007
Seoul National University
1993
Salinity is one of the major factors contributing to loss crop productivity and thereby impacting livelihood people in more than 100 countries world area land affected by salinity increasing day day. This will worsen due various such as drought that might result high soil salinity. Use plant growth promoting rhizobacteria promising eco-friendly strategies for stress management part sustainable agricultural practices. However, it requires selecting with good survivability adaptation salt...
Methylobacterium oryzae CBMB20, a promising plant growth promoting bacteria (PGPB) and biocontrol agent, was immobilized in different formulations such as wet chitosan, dry alginate were tested for tomato promotion. Chitosan solution (1.5%) with pH 5.5–6.0 90 min contact time found optimal immobilization. The chitosan showed better entrapment efficiency good degradability resistance apart from slow release of cells under prolonged incubation. Survivability (80%) observed formulation even...
Abstract Soil organic carbon (SOC) is one of the important measures soil fertility and sustainability in arable lands. With continuous CO 2 flux measurements, this study assessed SOC decomposition its environmental controls at both half‐hourly season‐long scales a single‐crop rice ( Oryza sativa L.) paddy during three fallow periods between 2004 2007. Measurements were made on gray lowland sited eastern Japan using eddy covariance method. Ecosystem respiration was strongly affected by water...
Abstract— A comparative study was carried out on the in situ susceptibilities to photoinactivation of photosystem I (PS I) and II II) complexes spinach thylakoids treated with efficient type sensitizers. While presence exogenous sensitizers caused a substantial increase extent whole chain electron transport, it did not affect PS activity light but exerted an enhanced photoinactivating effect only II. The measurements action spectrum for inhibition sensitizer‐incorporated that generation...
Temporal variability in the carbon isotope composition of ecosystem respiration ( δ R ) has been closely related to environmental variables that influence photosynthetic discrimination (Δ). We show belowground methanogenesis a strong impact on and leads partial decoupling between Δ. The , observed Japanese rice paddy, varied from −26.3‰ −22.8‰ over growing season 2003 was consistently more positive (by 2‰−5‰) than leaf bulk 13 C (δ P ). Interestingly, increased by 1.1‰–3.1‰ upon drainage,...
Chloride is known as the most important anion in salt-affected soils. We observed degree of EC change upon AgCl precipitation was quantitatively related with chloride concentration. Method validation and intercomparison ion chromatography revealed proposed method can provide rapid moderately precise concentrations
The active fraction of soil organic matter, which includes debris and light fraction, plays a major role in nutrient cycling. In addition, particulate matter is valuable index labile can reflect differences various behaviors. Since bound to mineral particles has its density lower than minerals, we partitioned into (<TEX>$</TEX><TEX><</TEX><TEX>1.5g\;cm^{-3}$</TEX>), (<TEX>$1.5-2.0g\;cm^{-3}$</TEX>), heavy (<TEX>$</TEX><TEX>></TEX><TEX>2.0g\;cm^{-3}$</TEX>), based on high...
Water-extractable anions in soils and plants are major forms of essential nonmetal nutrients (N, P, S, Cl) important for understanding the soil’s current nutrient supply conditions plant’s recent uptake status. We investigated compositions inorganic (nitrate, orthophosphates, chloride, sulfate) both soil plant water extracts obtained from 19 farmlands (5 monocots, 4 tree dicots, 10 non-tree dicots). observed that, although there were several general properties anions, anionic mostly inherent...