Data/hora: 07/06/2024 13:01:38

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 05/10/2010
Data da última atualização: | 04/07/2023
Autoria: | BERNARDI, A. C. de C.; MONTE, M. B. de M.; PAIVA, P. R. P.; WERNECK, C. G.; HAIM, P. G.; BARROS, F. de.
Afiliação: | ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; MARISA BEZERRA DE MELLO MONTE, CETEM/RIO DE JANEIRO; PAULO RENATO PERDIGÃO PAIVA, CETEM/RIO DE JANEIRO; CARLOS GUARINO WERNECK, UFRRJ/RIO DE JANEIRO-RJ; PATRICK GESUALDI HAIM, UFRRJ/RIO DE JANEIRO-RJ; FERNANDO DE SOUZA BARROS, UFRJ/RIO DE JANEIRO-RJ.
Título: | Dry matter production and nutrient accumulation after successive crops of lettuce, tomato, rice, and andropogon grass in a substrate with zeolite.
Ano de publicação: | 2010
Fonte/Imprenta: | Revista Brasileira de Ciência do Solo, v. 34, p. 435-442, 2010.
Idioma: | Português
Conteúdo: | 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 > ZPK > ZNK > Z. I
Palavras-Chave: | Fertilizer; Lycopersicum esculentum; Slow-release; Stilbite.
Thesagro: | Andropogon Gayanus; Lactuca Sativa; Oryza Sativa.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (19525-1) - UPC - AP - DD - PROCI-2010.00081 - BER - 2010.00081 - DIS