A5036102733- Pesticide and Herbicide Environmental Studies
- Geology and Paleoclimatology Research
- Pesticide Residue Analysis and Safety
- Toxic Organic Pollutants Impact
- Soil and Water Nutrient Dynamics
- Isotope Analysis in Ecology
- Wastewater Treatment and Nitrogen Removal
- Microbial Community Ecology and Physiology
- Soil Carbon and Nitrogen Dynamics
- Plant Pathogens and Fungal Diseases
- Allelopathy and phytotoxic interactions
- Plant-Microbe Interactions and Immunity
- Insect and Pesticide Research
- Weed Control and Herbicide Applications
- Analytical chemistry methods development
- Agriculture, Soil, Plant Science
- Heavy metals in environment
- Plant Disease Management Techniques
- Pharmacological Effects and Assays
- Agricultural Science and Fertilization
- Water-Energy-Food Nexus Studies
- Horticultural and Viticultural Research
- Avian ecology and behavior
- Chromium effects and bioremediation
- Groundwater and Isotope Geochemistry
Meijo University
2011-2024
Mie Agricultural Research Institute
2021
National Institute for Agro-Environmental Sciences
2008-2012
University of Tsukuba
2007-2008
World Economic Forum
2007
The classification systems for soil particle size ranges and texture differ among countries and/or associations. Unique have also endured in Japan over the last six decades. However, original reports explaining rationale these gradually been lost, so there is no source written either Japanese or English authors to reference origin of systems. In this light, we reviewed texture. range system was adopted from International Society Soil Science (ISSS) standards. introduced by Tommerup his paper...
Abstract The uptake ability of hydrophobic organic chemicals by plants and the nature xylem sap were studied. grown in soil contaminated with dieldrin. High amounts dieldrin detected shoots Cucurbita pepo Cucumis sativus , but little was seen Brassica oleracea var. italica Solanum lycopersicum Glycine max Zea mays Helianthus annuus . saps C C. leached adsorbed on C8 granules, those other did not. eluted high from size‐exclusion chromatography column near fractions RNase A (13.7 kDa) after...
It has been known that the Cucurbitaceae family takes up a large amount of persistent organic pollutants from soils and translocation those compounds in cucurbits is higher than non-cucurbits. To understand pollutant uptake mechanisms plant species, we compared dieldrin absorption transportation potentials several plants hydroponic medium. Sorghum (Sorghum vulgare Moench), sunflower (Helianthus annuus L.), soybean (Glycine max), komatsuna (Brassica rapa var. peruviridis), white-flowered...
The use of aldrin and dieldrin as pesticides was prohibited in 1975 Japan. However, some the soils still remain contaminated with dieldrin, because is easily oxidized to extremely stable soil. In recent years, at concentrations exceeding limit set by Food Sanitation Law Japan (dieldrin < 0.02 mg kg–1 fresh weight) has been detected cucumber fruits produced areas We examined effect soil application selected adsorbents on reducing three steps pot experiments. Among types biochar made from wood...
Abstract The use of heptachlor, a cyclodiene-type insecticide, has been banned since the 1970s because its carcinogenic potential. However, metabolite, heptachlor exo-epoxide (HEPX), still detected in fruit cucurbits produced some areas. It is important to reduce daily intake HEPX contained food. To address this issue, effects carbonaceous adsorbents on uptake from soil by Cucurbita maxima Dutch. (winter squash) were investigated. Amorphous organic carbons, such as peat moss and wood chips,...
We investigated the adsorption and mobility of aromatic arsenicals (AAs) in two types Japanese agricultural soils batch column leaching experiments. The amounts AAs adsorbed onto a Fluvisol (a sandy loam) an Andosol light clay) decreased order phenylarsonic acid (PAA) > methylphenylarsinic (MPAA) diphenylarsinic (DPAA) methyldiphenylarsine oxide (MDPAO) dimethylphenylarsine (DMPAO). all Andosol, which had more amorphous minerals organic carbon, were higher than those Fluvisol. adsorbability...
To prevent the distribution of cucumbers with dieldrin contamination exceeding limit set by Japanese Food Sanitation Law, extraction solvent for dieldrin-contaminated soil was selected prior to cultivation so that residue level in cucumber could be predicted. The exhaustive from not explain uptake plants. However, significant correlation (R(2) = 0.966, P < 0.001) observed between concentrations and extracted 50% (v/v) methanol-water solution soils. This a result phytoavailability...
We examined the linkages between topography and electron donors for denitrification on in-stream NO3− concentration in headwater catchments Lake Hachiro watershed having marine sedimentary rock, Japan. In 35 (0.07–16.9 km2), we sampled stream water every season 2 years. The samples were analyzed NO3–, dissolved nitrous oxide (dN2O), SO42 – concentrations. Stream sediment was once measurement of potential (DP). Water-extractable soil organic carbon (WESOC) easily oxidizable sulfide (EOS)...
Sulfur-based denitrification may be a key biogeochemical nitrate (NO 3 − ) removal process in sulfide-rich regions, but it is still poorly understood natural terrestrial ecosystems. We examined sulfur-driven NO reduction using streambank soils headwater catchment underlain by marine sedimentary rock Akita, Japan. In exhibiting higher sulfide content streambed sediment, we sampled two adjacent of I (two layers) and II (eight layers). Anaerobic long-term incubation experiments (40 days, I)...
Large amounts of marine-derived nitrogen are carried ashore by seabirds in their feces (ornithogenic N). Various topological, meteorological, and environmental factors can affect microbial transformation ornithogenic N altering the physical biochemical conditions soils. Tsunami may be a factor affecting ornithgenic soil dynamics leading to changes conditions. We examined effects tsunami triggered 11 March 2011 earthquake off East Coast Honshu, Japan, on Black-tailed Gull Larus crassirostris...
The adsorption of 2-(2,4-dichloro-3-methylphenoxy)propanoic acid (DMPA) on the surface horizon a humus-rich Andosol was examined. To investigate mechanisms adsorption, chemically treated Andosols, such as organic matter removed Andosol, and active metals clay minerals were prepared. Furthermore, humic extracted from Andosol. DMPA identified by using those untreated Andosols acid. amount adsorbed increased with decreasing equilibrium pH value. Active hydroxyl groups most important soil...
Pyrogenic carbon (PyC) or black (BC), the residue of grassland and forest fires fossil fuel combustion, plays an important role in storage pollutant adsorption soil. To understand its roles soil, it is necessary to accurately assess PyC fraction. Soil is, however, a complex mixture inorganic organic matter, usually containing humic substances, i.e., non-PyC concentrations one two orders magnitude higher than PyC. This engenders difficulty determining content soils; thus, various quantitative...
The phytotoxic activity of soil‐applied thenylchlor (2‐chloro‐ N ‐[3‐methoxy‐2‐thenyl]‐2′,6′‐dimethylacetanilide) on the growth rice seedlings and its behavior in two different types soil, Ryugasaki soil Tsukuba after application was investigated with emphasis concentration water. greatest inhibition found immediately to both soils. decreased time However, rate decrease slower than soil. water, amount adsorbed solid, total reduced solid phase more persistent that water soils higher at any...
We investigated the relationship between dieldrin concentrations in soil samples extracted with a 50% (v/v) methanol–water solution and four cultivars of cucumber fruits grown 12 fields. Regression analysis showed significant (p<0.01) relationships fruits. Varietal differences were reflected slope regression lines. The fruit concentration factor (FCF), calculated as divided by exhaustive concentration, indicated that accumulation summer is more than winter. Further, we found precision this...
The relationship between the behavior of clomeprop ([ RS ]‐2‐[2,4‐dichloro‐ m ‐tolyloxy]propionanilide) and its residual phytotoxic activity in soil was investigated laboratory with special emphasis on concentration water. radish seedlings ( Raphanus sativus L. var. radicula cv. Akamaruhatsukadaikon), as test plant, became greater time after application but inhibition different two soils, which had properties. amount 2‐(2,4‐dichloro‐3‐methylphenoxy)propionic acid (DMPA), a hydrolyzed active...