Acúmulo de micronutrientes em beterraba submetida a diferentes manejos de fertirrigação e niveis de salinidade

• Autor(a) principal: Silva, Alexsandro Oliveira da [UNESP]
• Data de Publicação: 2014
• Outros Autores: Klar, Antonio Evaldo [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.dca.uem.br/V3N1.htm; http://hdl.handle.net/11449/137403
• topic: Beta vulgaris L.; Soil solution; Electrical conductivity; Beta vulgaris L.; Solução do solo; Condutividade elétrica

Knowledge of the amount of nutrients accumulated in the plant provides important information that can assist in the fertilization of crops program. To study the salt effect caused by high amounts of fertilizers applied by fertigation, an experiment was conducted in a greenhouse at the FCA/UNESP, Botucatu, SP. The experiment lasted 90 days (01/11/11 to 29/01/12) constituting five levels of electrical conductivity (1.0, 3.0, 6.0, 9.0, and 12.0 dS m-1), fertigation two management (M1: traditional management, M2: management by controlling the ionic concentration of the soil solution) and two varieties of beets (Early Wonder and Itapuã) blocks with 4 repeats forming a 5x2x2 factorial. From the dry weight of shoots and roots was determined the levels of micronutrients (B, Cu, Fe, Mn, Zn mg kg-1), and by multiplying the dry matter accumulation was determined in these plant . The accumulation of micronutrients in different parts of the plant followed the order: Fe> Mn> Zn> B> Cu for the different management fertigation studied. The Cu, Fe, Mn element present responses to increased soil salinity leading to greater absorption.