Influence of stage of development in the efficiency of nitrogen fertilization on poplar

Lasa, Berta and Jauregui, Ivan and Aranjuelo, Iker and Sakalauskiene, Sandra and Aparicio-tejo, Pedro M. (2016) Influence of stage of development in the efficiency of nitrogen fertilization on poplar. Journal of Plant Nutrition, 39 (1). pp. 87-98. ISSN 0190-4167

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Abstract

Poplar cuttings (Populus x euroamericana) were planted in pots and grown in a greenhouse for four months with drip irrigation. Two nitrogen (N) doses of 60 and 120 kg nitrate (N-NO3−) ha−1 (labeling with 15N stable isotopes) were applied at one (time I), two (time II) and three months after of the plantation (time III). The aim of this study was to determine the N-fertilizer application method that resulted in optimal N-uptake by a short-rotation of poplar crop during first year of growth. Our data revealed that NUE (N use efficiency) was largest in the last part of the experiment. The larger development of those plants at this stage enabled the improved absorption and assimilation of N. Furthermore, 15N also revealed that supply of N at three months post-planting generated more biomass and increased the N reserves in the stem; a key factor for ensuring the optimum regrowth during the second year.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Plant Nutrition
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1300/1314
Subjects:
ID Code:
81378
Deposited By:
Deposited On:
30 Aug 2016 10:36
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Jun 2020 04:54