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Humic acid-phosphate fertilizer interaction and extractable phosphorus in soils of contrasting texture Rev. Ciênc. Agron.
Rosa,Sara Dantas; Silva,Carlos Alberto; Maluf,Henrique José Guimarães Moreira.
ABSTRACT Extractable phosphorus (P) in soil depends on soil test employed, reactivity of fertilizer and interaction of P added to the soil properties, including organic matter. The aim of this paper was to assess the contents of P extracted from Red Latosol (LVd) and Quartzarenic Neosol (RQ) samples, incubated with 0; 5; 10; 50 or 100 mg kg-1 C-humic acid (C-HA) and 400 mg kg-1 of P, via Araxá phosphate rock (AP), Bayóvar reactive phosphate rock (BP) or single superphosphate (SS). Thus, it was adopted a five (C-HA concentrations) x three (P sources) factorial arrangement, using a randomized block design with three replications. The mixtures of soil, C-HA concentrations and P sources were incubated for 60 days; in sequence, the soil P was extracted by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Humic substances; Extractors of soil P; Soil pH; Phosphate rocks.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000100032
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Laser-induced breakdown spectroscopy associated with multivariate analysis applied to discriminate fertilizers of different nature. Repositório Alice
SENESI, G. S.; ROMANO, R. A.; MARANGONI, B. S.; NICOLODELLI, G.; BOAS, P. R. V.; BENITES, V. M.; MILORI, D. M. B. P..
bitstream/item/167439/1/P-Laser-induced-breakdown....pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Laser-induced breakdown spectroscopy; Phosphate rocks; Organomineral fertilizers; Principal components analysis; Partial least squares regression.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080667
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