Data/hora: 11/06/2024 16:43:09

Provedor de dados: 	90	
País: 	Brazil	
Título: 	Dry matter production and nutrient accumulation after successive crops of lettuce, tomato, rice, and andropogongrass in a substrate with zeolite	
Autores: 	Bernardi,Alberto C. de Campos; Monte,Marisa Bezerra de Mello; Paiva,Paulo Renato Perdigão; Werneck,Carlos Guarino; Haim,Patrick Gesualdi; Barros,Fernando de Souza.	
Data: 	2010-04-01	
Ano: 	2010	
Palavras-chave: 	Stilbite; Lactuca sativa; Lycopersicum esculentum; Oryza sativa; Andropogon gayanus; Slow-release fertilizer; Growth substrate.	
Resumo: 	Zeolites are hydrated crystalline aluminosilicate minerals of natural occurrence, structured in rigid third dimension net that can be used as slow release plant-nutrient source. The main objective of this study was to evaluate the effects of plant growth substrate under zeolite application, enriched with N, P and K, on dry matter yield and on nutrient contents in consecutive crops of lettuce, tomato, rice, and andropogon grass. The experiment was carried out in a greenhouse, with 3 kg pots with an inert substrate, evaluated in a randomized block design with three replications. Treatments consisted of four types of enrichment of concentrated natural zeolite: concentrated zeolite (Z) only, zeolite + KNO3 (ZNK), zeolite + K2HPO4 (ZPK) and zeolite + H3PO4 + apatite (ZP), and a control grown in substrate fertilized with a zeolite-free nutrient solution. Four levels of enriched zeolite were tested: 20, 40, 80, and 160 g/pot. Four successive crops were grown on the same substrate in each pot: lettuce, tomato, rice, and andropogon grass. Results indicated that N, P and K enriched zeolite was an adequate slow-release nutrient source for plants. The total dry matter production of above-ground biomass of four successive crops followed a descending order: ZP &gt; ZPK &gt; ZNK &gt; Z.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000200017	
Editor: 	Sociedade Brasileira de Ciência do Solo	
Relação: 	10.1590/S0100-06832010000200017	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Ciência do Solo  v.34 n.2 2010	
Fonte: 	info:eu-repo/semantics/openAccess