Data/hora: 25/06/2024 00:54:19

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