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Efficiency of foliar application of sparingly soluble sources of boron and zinc in citrus Scientia Agricola
Macedo,Luiza Oliveira; Mattos Júnior,Dirceu; Jacobassi,Rodrigo; Hippler,Franz Walter Rieger; Quaggio,José Antônio; Boaretto,Rodrigo Marcelli.
ABSTRACT This study evaluated leaf supply of zinc (Zn) and boron (B) using either soluble or sparingly soluble fertilizers in young sweet orange trees. Three experiments were set up in a greenhouse to compare two sources and four doses (control, low, adequate and high) of fertilizers as follows: (i) Experiment I (B): boric acid and calcium borate; (ii) Experiment II (Zn): Zn sulfate and Zn oxide; and (iii) Experiment III (B + Zn): boric acid + Zn Sulfate and Zn Borate. The sparingly soluble sources were effective in increasing the Zn and B leaf concentration. Dry matter of the aerial part increased 18 % with B applications in adequate concentration independent of the B fertilizer sources. In contrast, trees did not grow well with applications of adequate...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Micronutrients; Microparticles; Leaf spraying; Fertilizer use.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000101401
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