Boro e zinco no sulco de plantio na cultura da cana-de-açúcar

• Ano de defesa: 2016
• Autor(a) principal: Marangoni, Fernanda Forli
• Orientador(a): Tiritan, Carlos Sérgio
• Banca de defesa: Creste, José Eduardo , Zavaschi, Eduardo , Vitti, Godofredo Cesar , Catuchi, Tiago Aranda
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade do Oeste Paulista
• Programa de Pós-Graduação: Doutorado em Agronomia
• Departamento: Doutorado em Agronomia
• País: Brasil
• Palavras-chave em Português: Adubação, ácido bórico, sulfato de zinco e produtividade
• Palavras-chave em Inglês: Fertilizer, boric acid, zinc sulfate and productivity.
• Área do conhecimento CNPq: CIENCIAS AGRARIAS::AGRONOMIA
• Link de acesso: http://bdtd.unoeste.br:8080/jspui/handle/jspui/1022

The determination of the appropriate levels of fertilization with micronutrients is essential for the culture to express its full productive potential, since they participate in vital functions in the metabolism of plants, participating in compounds responsible for metabolic and / or phenological processes. This research aims to evaluate the response of sugarcane (Saccharum officinalis) to fertilization with micronutrients (boron and zinc) in low fertility soils, in order to establish their adequate nutritional content. The experimental design was randomized blocks, in a factorial scheme (3 x 4) considering the application of three doses of boric acid (17% B) to provide 0, 1.0 and 2.0 kg ha-1 of boron and four doses Of zinc sulfate (20% Zn) for the supply of 2.0; 4.0 and 6.0 kg.ha-1 of zinc. The experimental area consisted, therefore, of three blocks with twelve experimental units, totaling 36 plots. In order to verify the results, the nutritional status of the plant (foliar diagnosis), soil analysis, indicators of technological quality and sugarcane production were analyzed. Through the evaluation of the results of the micronutrient contents foliar and in the soil it is noticed that there was no direct relation between the leaf contents of the sugarcane culture and different treatments applied during the conduction of the experiment. The technological attributes (Fibra, Brix, Pol and ATR) were not significantly influenced by the fertilization with boron and zinc. In cane-plant the highest yields were reached by application of 2.0 kg ha-1 of zinc represented by treatment 2, and in treatment 10, with a respective increase of 6% and 10%.