Data/hora: 18/06/2024 12:38:22

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 03/01/2014
Data da última atualização: | 12/05/2023
Autoria: | BERNARDI, A. C. de C.; OLIVEIRA, P. P. A.; MONTE, M. B. de M.; SOUZA-BARROS, F.
Afiliação: | ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; MARISA B. DE MELO MONTE, CETEM - RIO DE JANEIRO; FERNANDO SOUZA BARROS, UFRJ- RIO DE JANEIRO.
Título: | Brazilian sedimentary zeolite use in agriculture.
Ano de publicação: | 2013
Fonte/Imprenta: | Microporous and Mesoporous Materials, v. 167, n. 1, p. 16-21, feb. 2013.
DOI: | https://doi.org/10.1016/j.micromeso.2012.06.051
Idioma: | Inglês
Conteúdo: | This report describes the characterization and application of the Brazilian zeolitic sedimentary rocks as a slow plant-nutrient fertilizer and soil conditioner. The characterization of the head samples showed that it is composed of the zeolite stilbite intertwined with a smectic clay mineral, mixed with quartz. A low-cost quartz separation gravitational technique was used to concentrate the mineral. An enrichment of concentrated natural zeolite was carried out by adding KNO3, K2HPO4 and H3PO4 + apatite. These materials were tested with Rangpur lime rootstock and other with four successive crops grown on the same substrate: lettuce, tomato, rice, and Andropogon grass. The results indicated that N, P and K enriched zeolite was an adequate slow-release source of nutrients to plants increasing 20% of crop production and also improving products quality. Other green house and field experiments with concentrated zeolite applied with urea showed 8% of reduction on losses of ammonia volatilization and improving 5% the corn dry matter yield. Concentrated zeolite used as a sand soil amendment also increased at least 10% of soil water retention and 15% of available water capacity.
Palavras-Chave: | N losses; Slow release fertilizer; Stilbite; Water retention curve.
Thesaurus Nal: | available water capacity.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (22256-1) - UPC - AP - DD - PROCI-2013.00203 - BER - 2013.00203 - DIS