Synthetic fertilizers and raw or composted livestock manure are typical nitrogen (N) sources
in intensive cropping and livestock-farming systems. The distinct N isotope ratios (15 N/14 N …

In recent decades the analysis of stable isotopes in plants has become a useful method to
infer natural and anthropogenic effects on the growing conditions of plants. Here we present …

This paper explores the impact of animal manure application on the δ 15 N values of a
broad range of crops (cereals and pulses), under a range of manuring levels/regimes and at …

Carbon (C) and nitrogen (N) inputs to farmland via fertilizer application are potential sources
of C and N that influence soil acidification and water eutrophication. A pilot study was …

Organic fertilizers have the capacity to alter the nitrogen isotopic composition of plants.
Camelid dung and seabird guano are two potentially important fertilizers in the agricultural …

Background and aim Symbiotic dinitrogen (N 2) fixation is the most important external N
source in organic systems. Our objective was to compare symbiotic N 2 fixation of clover …

Natural variations in the stable isotope 15 N are often exploited in studies of N cycling in
ecosystems. Lower 15 N natural abundance in non-legume plants growing in association …

As consumers demand more certainty over where their food and beverages originate from
and the genuineness of ingredients, there is a need for analytical techniques that are able to …

Identifying the isotopic signatures in animal bones and teeth associated with husbandry
practices has important implications for understanding the subsistence strategies in use by …

Understanding the effects of land-use change on stock and composition of soil organic
carbon (SOC) and nitrogen (N) is pivotal for sustainable agriculture and climate change …