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Characterization and use efficiency of sparingly soluble fertilizer of boron and zinc for foliar application in coffee plants

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dc.contributor.author Macedo, Luiza Oliveira
dc.contributor.author Mattos-Jr, Dirceu
dc.contributor.author Jacobassi, Rodrigo Candido
dc.contributor.author Petená, Guilherme
dc.contributor.author Quaggio, José Antonio
dc.contributor.author Boaretto, Rodrigo Marcelli
dc.date.accessioned 2021-12-02T12:34:17Z
dc.date.available 2021-12-02T12:34:17Z
dc.date.issued 2021
dc.identifier.citation MACEDO, L. O. et al. Characterization and use efficiency of sparingly soluble fertilizer of boron and zinc for foliar application in coffee plants. Bragantia, Campinas, v. 80, p. 1-12, 2021. pt_BR
dc.identifier.issn 1678-4499
dc.identifier.uri https://doi.org/10.1590/1678-4499.20200329 pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/12860
dc.description.abstract Deficiencies of boron and zinc occur in coffee plantations despite the many fertilizer sources offered by the industry for the agriculture. Sparingly soluble fertilizers (SSF) have been used in several countries for many years. However, their effectiveness when Applied to leaves is highly contested, and information about their use efficiency is still lacking. Experiments were set up to characterize the SSF of B and Zn according to particle size of fertilizers, and the spreading and retention of the particles in the leaf, comparing SSF (calcium borate, Zn oxide, and Zn borate) with soluble sources (boric acid and Zn sulfate) in four doses (mg.L-1): Experiment I (B 0, 130, 260, and 520), Experiment II (Zn 0, 200, 600, and 1,800), and experiment III (B 0, 43, 129, and 387, and Zn 0, 200, 600, and 1,800), to supply B and Zn for coffee plants. Microparticles of the SSF were found adhered to coffee leaves, and the Zn oxide was the one with the smallest particle size. SSFs were effective at increasing the Zn and B leaf concentrations in coffee. Dry matter of coffee increased 15% with applications of 270 mg.L-1 of B as calcium borate and 384 mg.L-1 of B as boric acid. Foliar application of Zn oxide at the dose of 1,800 mg.L-1 of Zn increased the leaf areas of the plants. High doses of Zn sulfate caused toxicity to coffee plants due to high saline concentrations. The microparticles found retained on the surface of the coffee leaves increased leaf concentration of B and Zn, which explained variations in the dry matter measurements and show the potential of the SSF for the development of fertilizers to improve the availability of micronutrients to coffee. pt_BR
dc.format pdf pt_BR
dc.language.iso en pt_BR
dc.publisher Instituto Agronômico (IAC) pt_BR
dc.relation.ispartofseries Bragantia;v.80, 2021
dc.rights Open Access pt_BR
dc.subject Micronutrients pt_BR
dc.subject Microparticles pt_BR
dc.subject Nutrient sources pt_BR
dc.subject Leaf spraying pt_BR
dc.subject.classification Cafeicultura::Solos e nutrição do cafeeiro pt_BR
dc.title Characterization and use efficiency of sparingly soluble fertilizer of boron and zinc for foliar application in coffee plants pt_BR
dc.type Artigo pt_BR

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