Journal article

The role of N-15-depleted fertilizers as tracers in N cycling studies in agroecosystems

Phillip M Chalk

Nutrient Cycling in Agroecosystems | SPRINGER | Published : 2018


A search of the literature (principally Google Scholar, using the keywords given below) revealed that 120 research papers have been published where N-depleted ( N-enriched) fertilizers, including ammonium sulfate, ammonium nitrate, urea and ammonia forms were used as tracers. The studies included annual cereals, vegetables, a grain legume and a fibre crop, and perennial crops including grasses, shrubs (berries), trees (fruits and nuts) and N -fixing forage, grain and woody legumes and an actinorhizal species. Other minor examples include perennial ornamentals and trees harvested for wood. Applications included estimation of fertilizer recovery in crops, in post-harvest soil and estimation o..

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