Ideal nitrogen concentration in leaves for the production of high-quality grapes cv ‘Alicante Bouschet’ (Vitis vinifera L.) subjected to modes of application and nitrogen doses

Lincon Oliveira Stefanello, Raíssa Schwalbert, Raí Augusto Schwalbert, Gerson Laerson Drescher, Lessandro De Conti, Luan Pierre Pott, Adriele Tassinari, Matheus Severo de Souza Kulmann, Isley Cristiellem Bicalho da Silva, Gustavo Brunetto