Natural15N Abundance of Field Grown Soybean Grains Harvested in Various Locations in Japan and Estimate of the Fractional Contribution of Nitrogen Fixation
Open Access
- 1 September 1986
- journal article
- research article
- Published by Taylor & Francis in Soil Science and Plant Nutrition
- Vol. 32 (3) , 443-449
- https://doi.org/10.1080/00380768.1986.10557524
Abstract
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.Keywords
This publication has 5 references indexed in Scilit:
- Variations of Natural 15N Abundances in Leguminous Plants and Nodule FractionsPlant and Cell Physiology, 1984
- Effect of Fungicides and Herbicides on Nodulation and N2 Fixation in Soybean Fields Lacking Indigenous Rhizobium japonicum1Agronomy Journal, 1984
- Effect of Rhizobial Strain and Host Plant on Nitrogen Isotopic Fractionation in LegumesPlant Physiology, 1983
- Estimates of N2 Fixation Based on Differences in the Natural Abundance of 15N in Nodulating and Nonnodulating Isolines of SoybeansPlant Physiology, 1980
- Estimate of symbiotically fixed nitrogen in field grown soybeans using variations in15N Natural abundancePlant and Soil, 1979