Journal article
The amount, but not the proportion, of N-2 fixation and transfers to neighboring plants varies across grassland soils
Yushu Zhang, Alison Carswell, Rui Jiang, Laura Cardenas, Deli Chen, Tom Misselbrook
SOIL SCIENCE AND PLANT NUTRITION | TAYLOR & FRANCIS LTD | Published : 2020
Abstract
Biological nitrogen fixation (BNF) is an important nitrogen source for both N2-fixers and their neighboring plants in natural and managed ecosystems. Biological N fixation can vary considerably depending on soil conditions, yet there is a lack of knowledge on the impact of varying soils on the contribution of N from N2-fixers in mixed swards. In this study, the amount and proportion of BNF from red clover were assessed using three grassland soils. Three soil samples, Hallsworth (HH), Crediton (CN), and Halstow (HW) series, were collected from three grassland sites in Devon, UK. A pot experiment with 15N natural abundance was conducted to estimate BNF from red clover, and the proportion of N ..
View full abstractGrants
Awarded by Newton Fund through the UK-China Virtual Joint Centre for Improved Nitrogen Agronomy [CINAg]
Awarded by UK Biotechnology and Biological Sciences Research Council
Awarded by National Natural Science Foundation of China
Awarded by National Natural Science Foundation of Fujian Province
Awarded by China Scholarship Council
Awarded by Foundation of Fujian Academic of Agricultural Sciences
Funding Acknowledgements
This work was supported by the following grants: the Newton Fund through the UK-China Virtual Joint Centre for Improved Nitrogen Agronomy [CINAg, BB/N013468/1]; as part of Rothamsted Research's Institute Strategic Programme-Soil to Nutrition [BB/PO1268X/1] funded by the UK Biotechnology and Biological Sciences Research Council; the National Natural Science Foundation of China [41771330, 41401339] and of Fujian Province [2018J01058, 2019J01104, 2019J01105]; the public welfare project of Fujian Province [2019R1025-1]; the project of China Scholarship Council, the project of China Scholarship Council [201809350003], and Foundation of Fujian Academic of Agricultural Sciences [YC2015-6, AB2017-2, SIIT2017-1-9]. We gratefully acknowledge the advice and support given by Dr. William Burchill on the experimental procedures presented here, and that of Liz Dixon in the laboratory analyses.