Micronutriente na cana-de-a?úcar irrigada: corre??o do solo com escória siderúrgica

摘要

div align="justify"Os efeitos benéficos do uso da escória siderúrgica vem sendo pesquisado em diversas espécies, principalmente entre as gramíneas, como a cana-de-a?úcar (Saccharum officinarum L.). O experimento foi instalado no campo, utilizando um dos solos mais representativos do estado de Alagoas em que se cultiva cana-de-a?úcar, ARGISSOLO ACIZENTADO distrófico. A escória siderúrgica utilizada continha 11% de SiO2 solúvel. Objetivou-se quantificar os micronutrientes da cana-de-a?úcar e o pH do solo à aplica??o de escória siderúrgica submetida a diferentes quantidades de águas no município de S?o Sebasti?o - AL. Foi utilizado o delineamento experimental em faixa em blocos casualizados, sendo cinco aplica??es de escórias siderúrgicas (faixas) e cinco laminas de água (subfaixas) com quatro repeti??es. As variáveis analisadas foram às concentra??es de micronutrientes (Zn, Cu, Fe e Mn) na folha. A aplica??o de escória aumentou as concentra??es foliares de Zn e as de Cu e Fe diminuíram. A concentra??o de Mn foliar, na intera??o de escória e lamina, diminuiu na cana planta e primeira socaria, quando o fator foi escória dentro de laminas. Quando o fator foi laminas dentro de escórias, houve aumento da concentra??o deste elemento nos dois ciclos.Palavras-chave: Saccharum officinarum L. Quantidade de água. Escória siderúrgica./div/pbr/pABSTRACT/Pdiv align="justify"The beneficial effects of manuring with siderurgical slag has been researched in several species, mainly among grassy such as sugarcane (Saccharum officinarum L.). The experiment was installed in the field, using one of the most representative sugarcane soils of Alagoas State, was cultivated in Dystrophic AGREY ARGISSOIL. The siderurgical slag source was containing 11% of soluble SiO2. The objective this research was quantify foliate micronutrients in the sugarcane and pH of soil due siderurgical slag application submitted the different irrigation water in S?o Sebasti?o city. For such the design was band of randomizered blocks, with five doses of siderurgical slags (band) and five water (sub band) and four repetitions. The analyzed variables were the micronutrients concentrations (Zn, Cu, Fe and Mn) in the leaf. The slag application increased the concentrations significantly foliate of Zn while concentrations of Cu and Fe decreased. The foliate concentration of Mn, in the interaction of slag and irrigation water, it decreased in the cane plants and first it would beat, when the factor was slag inside of irrigation water however, when the factor was sheets inside of slag, there was increase of the concentration this element us of the cycles. The foliate concentration of Mn, due the interactive effect of slag and irrigation water, decreased in the first cut. However, when the factor was irrigation water inside of slag, there was increase of concentration of this in the two cycles.Key words: Saccharum officinarum L. Amount of water. Siderurgical slag./div