Contribution of nitrogen from urea applied at different rates and times on grapevine nutrition
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- 作者：Gustavo Brunettoa ; brunetto.gustavo@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Carlos Alberto Cerettaa ; George Wellington Bastos de Melob ; Eduardo Girottoc ; Paulo Ademar Avelar Ferreiraa ; Cledimar Rogé ; rio Lourenzid ; Rafael da Rosa Coutoa ; Adriele Tassinariaa ; Rodrigo Knevitz Hammerschmitta ; Lincon Oliveria Stefanello da Silvaa ; Bruno Pedro Lazzarettia ; Matheus Severo de Souza Kulmanna ; Corina Carrancae
- 关键词：15N uptake ; N derived from fertilizer ; Plant N distribution ; Residual soil N ; Vitis vinifera
- 刊名：Scientia Horticulturae
- 出版年：2016
- 出版时间：5 August 2016
- 年：2016
- 卷：207
- 期：Complete
- 页码：1-6
- 全文大小：480 K
文摘
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The recovery and distribution of N derived of the urea-N15 applied at budding and at blooming of grapevines was evaluated.
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The grapevines grown in a sandy soil took up more N derived from fertilizer applied at a rate of 40 kg N ha−1 split at budding and full bloom in the first harvest season.
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Unlike, N applied in the previous season was recovered especially in reserve organs: the new shoots, stem and roots, whereas leaves and berries + rachis showed the lowest 15N recovery. Nitrogen in the following season was mainly derived from other sources than the fertilizer N.