Evaluation of soil test procedures for determining rice-available silicon

Autor:	George H. Snyder, Morel P. Barbosa-Filho, Lawrence E. Datnoff, C. L. Elliott
Rok vydání:	2001
Předmět:	Oryza sativa Soil test Soil organic matter Soil Science Buffer solution Amberlite Straw complex mixtures chemistry.chemical_compound Horticulture chemistry Soil water Botany Citric acid Agronomy and Crop Science
Zdroj:	Communications in Soil Science and Plant Analysis. 32:1779-1792
ISSN:	1532-2416 0010-3624
DOI:	10.1081/css-120000249
Popis:	Soil testing for silicon (Si) in the predominantly organic soils of the Everglades Agricultural Area has not been sufficiently investigated. The objective of this study was to identify a suitable Si extraction method for these soils for rice (Oryza sativa L.). Twenty-two surface soil samples were collected from 10 farms. Of these 22, 10 samples were from fields that had received Si fertilization at some time in the past, and 12 were from fields that had not received Si fertilization. Rice was grown for 80 days in each soil in the greenhouse. Subsequently, the straw and immature panicles were harvested, dried, weighed, and analyzed for Si. In the laboratory, seven different methods were used for extracting Si from the soils. The methods were: (1) 0.5 M acetic acid extract, 10:25 (soil:extract, v/v ratio), (2) citric acid 1%, 1:10, (3) demineralized water, 1:10, (4) TRIS buffer pH 7.0, 1:10, (5) water-bath shaking (Batch method) 1:10 v/v ratio plus cation exchange resin (Amberlite IRC-50 H type), (6) soil i...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5b2067992e8f1fb691c17fb6e7aa5f82 https://doi.org/10.1081/css-120000249 Zobrazit plný text záznamu