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Guidelines for fertilizer use in vineyards based on nutrient content of grapevi...
Arrobas, Margarida; Ferreira, I.Q.; Freitas, Sara; Verdial, João; Rodrigues, M.A.Plant analysis plays a major role in fertilizer recommendations for perennial tree crops and vines. Plantanalysis, however, does not quantify the rate of nutrients to apply. The approach developed in this worktakes into account the content of the nutrients in grapevine parts and their dynamic within the plantto assist in the estimation of the amount of fertilizer to apply. Groups of three vines were cut at grou...
Nitrogen content in above-ground plant parts as an aid to establish more accura...
Rodrigues, M.A.; Ferreira, I.Q.; Freitas, Sara; Verdial, João; Arrobas, MargaridaNitrogen is the nutrient applied most frequently as fertilizer in annual and perennial crops. In grapevine, nitrogen determines the vigor and yield of vine and several attributes of must quality (Akin et al., 2012; Pérez-Alvaréz et al., 2013). The close relationship between nitrogen application, vine performance and the quality of wine requires the rational use of fertilizer-N. In addition, the excessive use of...
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