Potencial de extratos vegetais de cana-de-açúcar na neutralização da acidez do solo por método laboratorial

Abstract

Organic acids from residues decomposition of sugarcane, are able to interact with elements of the soil solution, creating organic complexes with aluminum, calcium and magnesium, thus reducing the toxic aluminum (Al) and increasing cation mobility profile. The objective of this study was to evaluate the efficiency of plant extracts of three varieties of sugarcane, in neutralizing acidity and cation mobility in the soil profile by laboratory method. The following variables were evaluated: cations content, content of functional groups, electrical conductivity, content and concentration of organic acids. The experimental design was completely randomized, with five replications. The results were submitted to analysis of variance and the difference between treatment means was assessed by 5% Tukey test. The plant extract the variety RB867515 presented concentration of functional groups, basic cations content, EC and amount of organic acids statistically superior to the other studied extracts, indicating greater neutralization capacity phytotoxic Al and mobilization of cations throughout the soil profile.

Keywords

• Plant extracts
• Mechanized harvest
• Sugarcane
• Al toxicity
• formando complexos orgânicos com alumínio
• cálcio e magnésio
• atenuando assim
• a toxidez por alumínio e aumentando a mobilidade de cátions em seu perfil. O objetivo deste trabalho foi avaliar a eficiência de extratos vegetais de 3 variedades de cana-de-açúcar
• na neutralização da acidez e mobilidade de cátions no perfil do solo por método laboratorial. Foram avaliadas as seguintes variáveis: teor de cátions
• conteúdo de grupos funcionais
• condutividade elétrica
• conteúdo e concentração de ácidos orgânicos. O delineamento experimental empregado foi o inteiramente casualizado
• com cinco repetições. Os resultados foram submetidos à análise de variância e a diferença entre médias de tratamentos foi avaliada pelo teste de Tukey a 5%. O extrato vegetal da palhada da variedade RB867515 apresentou concentração de grupos funcionais
• teor de cátions básicos
• CE e quantidade de ácidos orgânicos estatisticamente superiores aos demais extratos estudados
• indicando
• maior capacidade de neutralização da acidez
• do Al fitotóxico e de mobilização de cátions ao longo do perfil do solo.ABSTRACT: Organic acids from residues decomposition of sugarcane
• are able to interact with elements of the soil solution
• creating organic complexes with aluminum
• calcium and magnesium
• thus reducing the toxic aluminum (Al) and increasing cation mobility profile. The objective of this study was to evaluate the efficiency of plant extracts of three varieties of sugarcane
• in neutralizing acidity and cation mobility in the soil profile by laboratory method. The following variables were evaluated: cations content
• content of functional groups
• electrical conductivity
• content and concentration of organic acids. The experimental design was completely randomized
• with five replications. The results were submitted to analysis of variance and the difference between treatment means was assessed by 5% Tukey test. The plant extract the variety RB867515 presented concentration of functional groups
• basic cations content
• EC and amount of organic acids statistically superior to the other studied extracts
• Organic compounds