Título :	Uso de rochagem pela mistura de pó de basalto e rocha fosfatada como fertilizante natural de solos tropicais lixiviados
Autor :	Silveira, Rafael Toscani Gomes da
Orientador(es)::	Campos, José Eloi Guimarães
Assunto::	Rochagem Fertilização de plantas Solos tropicais
Fecha de publicación :	3-ago-2016
Data de defesa::	1-abr-2016
Citación :	SILVEIRA, Rafael Toscani Gomes da. Uso de rochagem pela mistura de pó de basalto e rocha fosfatada como fertilizante natural de solos tropicais lixiviados. 2016. viii, 98 f., il. Dissertação (Mestrado em Geociências Aplicadas)—Universidade de Brasília, Brasília, 2016.
Abstract:	The present research study the use of rock powders as natural fertilizer for agriculture, providing directly nutrients present in the minerals to the plants. In this experiment powders of phosphorite, basalt and phosphate dolostone were compared with soluble fertilizers (40N, 30P, 10K) and the control Reddish Oxisol. Twelve planting parcels on the distrophic Reddish Oxisol with different proportions and mixtures of inputs, and was also tested the necessity of using carbonate rock powder for the better development leguminous beans (Phaseolus vulgaris l.). For the understanding of the mineralogy of the material thin sections and X-ray diffractometry analysis were performed. For the understanding of the geochemistry of soil, X-ray fluorescence techniques and standard analysis of soil fertility were developed. Agronomic efficiency studies were carried out by measurements of leaf area and the weight of the production. The mineralogy study indicated that the use of stonemeal added to the soil fluorapatite, vermiculite, montmorillonite, dolomite, anorthite, augite and albite. These minerals are important by the agronomic point of view as they can be primarily sources of phosphate, calcium, sodium and magnesium. Soil geochemistry of the parcels exclusive submitted to rock powder fertilization shows that there was availability and/or leaching of Potassium, Phosphate and Sulfur oxides, 2.14 times greater than in the sites with use of rock powder together to carbonate powder. However, it is not reflected in greater agronomy efficiency, by the opposite, in the parcels where the rock powder was used, the agronomic results were much more interesting due to the better ionic balance with increased Point of Zero Charge (PZC). In General, the use of rock powders raised the pH and the saturation of bases fast enough so that the results were felt in the first planting. In addition, the results show decreasing in the aluminum saturation, organic matter and carbon. Finally, the use of rock powder presents important remaining effect, being the reapplication less necessary that in the case of soluble fertilizers. It is still possible to note that the parcel where the rock powder was applied was necessary to use less pH neutralization products in comparison to those where the soluble fertilizers were used.
metadata.dc.description.unidade:	Instituto de Geociências (IG)
Descripción :	Dissertação (mestrado)—Universidade de Brasília, Instituto de Geociências, 2016.
metadata.dc.description.ppg:	Programa de Pós-Graduação em Geociências Aplicadas e Geodinâmica
Licença::	A concessão da licença deste item refere-se ao termo de autorização impresso assinado pelo autor com as seguintes condições: Na qualidade de titular dos direitos de autor da publicação, autorizo a Universidade de Brasília e o IBICT a disponibilizar por meio dos sites www.bce.unb.br, www.ibict.br, http://hercules.vtls.com/cgi-bin/ndltd/chameleon?lng=pt&skin=ndltd sem ressarcimento dos direitos autorais, de acordo com a Lei nº 9610/98, o texto integral da obra disponibilizada, conforme permissões assinaladas, para fins de leitura, impressão e/ou download, a título de divulgação da produção científica brasileira, a partir desta data.
DOI:	http://dx.doi.org/10.26512/2016.04.D.21151
Aparece en las colecciones:	Teses, dissertações e produtos pós-doutorado

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