Título:	Effect of alternative multinutrient sources on soil chemical properties.
Autoria:	MARTINS, V. SILVA, D. R. G. MARCHI, G. LEITE, M. C. A. MARTINS, E. de S. GONÇALVES, A. S. F. GUILHERME, L. R. G.
Afiliação:	VANESSA MARTINS, UNIVERSIDADE FEDERAL DO PIAUÍ DOUGLAS RAMOS GUELFI SILVA, UNIVERSIDADE FEDERAL DE LAVRAS GIULIANO MARCHI, CPAC MAURICIO CUNHA ALMEIDA LEITE, UNIVERSIDADE FEDERAL DE LAVRAS EDER DE SOUZA MARTINS, CPAC ANA STELLA FREIRE GONÇALVES, UNIVERSIDADE FEDERAL DE LAVRAS LUIS ROBERTO GUIMARÃES GUILHERME, UNIVERSIDADE FEDERAL DE LAVRAS.
Ano de publicação:	2015
Referência:	Revista Brasileira de Ciência do Solo, v. 39, p. 194-204, 2015.
Conteúdo:	The current high price of potassium chloride and the dependence of Brazil on imported materials to supply the domestic demand call for studies evaluating the efficiency of alternative sources of nutrients. The aim of this work was to evaluate the effect of silicate rock powder and a manganese mining by-product, and secondary materials originated from these two materials, on soil chemical properties and on brachiaria production. This greenhouse experiment was conducted in pots with 5 kg of soil (Latossolo Vermelho-Amarelo distrófico - Oxisol). The alternative nutrient sources were: verdete, verdete treated with NH4OH, phonolite, ultramafic rock, mining waste and the proportion of 75 % of these K fertilizers and 25 % lime. Mixtures containing 25 % of lime were heated at 800 ºC for 1 h. These sources were applied at rates of 0, 150, 300, 450 and 600 kg ha-1 K2O, and incubated for 45 days. The mixtures of heated silicate rocks with lime promoted higher increases in soil pH in decreasing order: ultramafic rock>verdete>phonolite>mining waste. Applying the mining waste-lime mixture increased soil exchangeable K, and available P when ultramafic rock was incorporated. When ultramafic rock was applied, the release of Ca2+ increased significantly. Mining subproduct released the highest amount of Zn2+ and Mn2+ to the soil. The application of alternative sources of K, with variable chemical composition, altered the nutrient availability and soil chemical properties, improving mainly plant development and K plant uptake, and are important nutrient sources.
Thesagro:	Acidez do Solo
NAL Thesaurus:	Soil Nutrient availability Potassium
Digital Object Identifier:	https://doi.org/10.1590/01000683rbcs20150587
Notas:	Título em português: Alterações nos atributos químicos do solo pela adição de fontes alternativas multinutrientes.
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPAC)