Data/hora: 02/06/2024 16:55:42

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