Ryosuke Fujinuma

Effects of Cover Crop on Sugar, Flavonoid, and Monoterpene Concentrations in the Fruit of Citrus unshiu

百瀬 絢, Mia Ann Fosco, Shiho Kagami, Masaaki Yamada et autres

Cover crops are crucial in conservation agriculture for preventing soil erosion. For Citrus unshiu production, rattail fescue (Vulpia myuros (L.) C.C. Gmel) is a popular cover crop because its growth season differs from the citrus season, minimizing nutrient competition. However, no studies …

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Release of Microplastics from Shoe Outsoles into the Environment by Walking and Jogging, and Ingestion of Shoe Outsole Microplastics by Goldfish

Yasuo Shimizu, Tomoyasu Yoshitomi, Ryosuke Fujinuma, Makito Kobayashi

The migration of terrestrial microplastics (MPs) into aquatic environments is considered to have negatively affected aquatic ecosystems. However, quantifying terrestrial pathways is challenging because of the diverse sources of MPs. A poorly understood MP source is shoe outsoles. Therefore, this study determined …

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Microplastic ingestion by sea turtles around Tokyo Bay: Level of water pollution influences ingestion amounts

Riko Kimura, Emi Inoguchi, Chiyo Kitayama, Masaki Michishita et autres

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Migration of Artificial Turf Fibers from Artificial Turf Sports Field and Their Ingestion by Goldfish

Kanoko Takahashi, Ryosuke Fujinuma, Tomoyasu Yoshitomi, Yasuo Shimizu et autres

Various artificial materials and facilities are sources of microplastics, including artificial turf sports fields. In artificial turf fields, polyethylene fibers are attached to a basal cloth with adhesives. In the present study, we investigated whether the fibers in the field were detached …

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Ingestion of rubber tips of artificial turf fields by goldfish

Rihito Chiba, Ryosuke Fujinuma, Tomoyasu Yoshitomi, Yasuo Shimizu et autres

Marine microplastics are one of the global environmental issues. The present study examined whether rubber tips of artificial sports fields could be marine microplastics. We observed the migration of rubber tips from the artificial turf field to the surrounding ditch connected to …

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Migration of Artificial Turf Fibers from Artificial Turf Sports Field and Their Ingestion by Goldfish

Kanoko Takahashi, Ryosuke Fujinuma, Tomoyasu Yoshitomi, Yasuo Shimizu et autres

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Ingestion of rubber tips of artificial turf field by goldfish

Rihito Chiba, Ryosuke Fujinuma, Tomoyasu Yoshitomi, Yasuo Shimizu et autres

Abstract Marine microplastic is one of the global environmental issues. The present study examined whether rubber tips of artificial sports fields could be marine microplastic. We observed the migration of rubber tips from the artificial turf field to the surrounding ditch connected …

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The Impact of Banding Polymer-Coated Urea on Nitrogen Availability and Distribution in Contrasting Soils

Chelsea K. Janke, Phil Moody, Ryosuke Fujinuma, M. J. Bell

Abstract Polymer-coated urea (PCU) has been traditionally used for broadcast and/or incorporated application of nitrogen (N) fertilizers. To improve N use efficiency (NUE), there has been an increase in sub-surface banded application of this fertilizer technology. However, there is little information on …

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Organic Wastes Amended with Sorbents Reduce N2O Emissions from Sugarcane Cropping

Maren Westermann, Richard Brackin, Nicole Robinson, Monica Salazar Cajas et autres

Nutrient-rich organic wastes and soil ameliorants can benefit crop performance and soil health but can also prevent crop nutrient sufficiency or increase greenhouse gas emissions. We hypothesised that nitrogen (N)-rich agricultural waste (poultry litter) amended with sorbents (bentonite clay or biochar) or …

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Distribution and chemical speciation of nitrogen from band-applied enhanced-efficiency fertilisers

Chelsea K. Janke, Ryosuke Fujinuma, Philip W. Moody, M.J. Bell

Enhanced-efficiency fertilisers (EEFs) are promoted as tools for improving nitrogen (N) use efficiency (NUE) in agricultural systems, but more information is needed on their behaviour when they are band applied in tropical environments. Incubation studies using banded, urea-based EEFs with nitrification inhibitor …

Biochemical changes and distribution of nitrogen from bands of stabilised N-fertilizers in contrasting soils

Chelsea K. Janke, Ryosuke Fujinuma, Phil Moody, M. J. Bell

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Biochemical effects of banding limit the benefits of nitrification inhibition and controlled-release technology in the fertosphere of high N-input systems

Chelsea K. Janke, Ryosuke Fujinuma, Phil Moody, M. J. Bell

Enhanced efficiency fertilisers (EEFs) may have an important role in improving nitrogen (N) use efficiency in agricultural systems. The performance of EEFs when applied by broadcasting and incorporation is well documented; however, little information is available for sub-surface banded N-fertiliser. This study …

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