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Metalosato de zinc en respuesta agronómica y composición química del pasto mombaza en la amazonía ecuatoriana

Ciencia y Tecnología(2017)

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Abstract
espanolEn este estudio se pretendio mejorar el comportamiento agronomico del pasto mombaza con fertilizacion complementaria de metalosato de zinc, con la finalidad de elevar los parametros productivos y nutritivos del pasto. La investigacion se realizo en la provincia de Orellana, canton Joya de los Sachas. Se aplico un diseno completamente al azar (DCA) con arreglo factorial 3 (metalosato de zinc 0, 1, y 2 litros ha-1) x 3 (edad de cosecha 28, 35 y 42 dias). Las variables en estudio fueron peso de hoja (g), peso de tallo (g), numero de hojas, longitud de hojas (cm), relacion hoja tallo en peso (g), Biomasa kg.ha-1, contenido de: materia seca (%), proteina (%), materia inorganica (%) y materia organica (%). A los 42 dias de corte se alcanzaron los mayores resultados en peso de hoja, peso de tallo, numero de hojas, longitud de hojas, biomasa y materia seca, no obstante, a los 28 dias de corte se obtuvo mayor efecto en las variables relacion hoja/tallo, proteina y materia organica. El efecto interaccion se destaco 2 L ha-1 x 42 dias de corte en todas las variables agronomicas, tambien se evidencio que la interaccion 2 L ha-1 x 28 dias de corte, lograron mejor efecto en contenido de materia seca con 30.12%, ademas en el contenido de proteinas se destaco la interaccion 1 L ha-1 x 28 dias con 9.99% y en contenido de materia organica resalta 0 L ha-1 x 28 dias con 86.49%. EnglishThis study aimed to improve the agronomic behavior of mombaza grass with supplemental fertilization of zinc metalosate, in order to raise the productive and nutritive parameters of the pasture. The investigation was carried out in the province of Orellana, canton Joya de los Sachas. A completely randomized design (DCA) with factorial arrangement 3 (zinc metalosate 0, 1, and 2 liters ha-1) x 3 (harvest age 28, 35 and 42 days) was applied. The variables studied were leaf weight (g), stem weight (g), number of leaves, leaf length (cm), stem leaf weight ratio (g), Biomass kg.ha-1, content of dry matter (%), protein (%), inorganic matter (%) and organic matter (%). At the 42 days of harvest, the highest results were obtained in leaf weight, stem weight, leaf number, leaf length, biomass and dry matter, but at 28 days of cut, stem, protein and organic matter. In effect interaction was highlighted 2 L ha-1 x 42 days cut in all agronomic variables, it was also evidenced that the interaction 2 L ha-1 x 28 days of cut achieved better effect on dry matter content with 30.12%, in addition to the protein content, the interaction between 1 L ha-1 x 28 days with 9.99% was highlighted and organic matter content stood out 0 L ha-1 x 28 days with 86.49%.
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Key words
zinc
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