Natural15N Abundance of Field Grown Soybean Grains Harvested in Various Locations in Japan and Estimate of the Fractional Contribution of Nitrogen Fixation

Autor:	Toshikazu Takahashi, Masato Kuwahara, Junji Ishizuka, Iwao Kambayash, Tadakatsu Yoneyama, Hiroshi Nakano
Rok vydání:	1986
Předmět:	Measurement method chemistry Agronomy Abundance (ecology) Soil water Nitrogen fixation Soil Science chemistry.chemical_element Plant Science δ15N Isotope dilution Soy bean Nitrogen
Zdroj:	Soil Science and Plant Nutrition. 32:443-449
ISSN:	1747-0765 0038-0768
DOI:	10.1080/00380768.1986.10557524
Popis:	Natural 15N concentrations (δ15N values by per mil relative to atmospheric nitrogen) of soybean grains and soils from various locations in Japan were analyzed by a ratio mass spectrometer. The δ15N values of nonnodulating plants showed considerable variations ranging from -3.34 to 11.56‰. The δ15N values of the nodulated plants also differed depending on the location. but mostly they were lower than the values of the nonnodulating plants in each location. The %N derived from atmospheric N2 in the nodulated plants based on the differences in the δ15N values was estimated at 50% as an average of 37 measurements. The δ15N values of the soils where soy beans were grown, showed small variations compared to those of soy bean grains. There was no special relation between the δ15N values of the soils and soybean grains.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9b3bb7aecf5f327d27cb18eab9c79800 https://doi.org/10.1080/00380768.1986.10557524 Zobrazit plný text záznamu