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La biblioteca científica – SciELO Colombia, es una biblioteca electrónica que incluye, una colección seleccionada de revistas científicas Colombiana, en todas las áreas del conocimiento.

Journal Article

Journal article

Influencia de la aplicación de vinaza en actividad y biomasa microbiana en un Entic Dystropept y un Fluventic haplustoll del Valle del Cauca, Colombia  [2009]

Montenegro Gómez, Sandra Patricia(Universidad Nacional de Colombia Facultad de Ciencias Agropecuarias); Menjivar Flórez, Juan Carlos(Universidad Nacional de Colombia Facultad de Ciencias Agropecuarias); Bonilla Correa, Carmen Rosa(Universidad Nacional de Colombia Facultad de Ciencias Agropecuarias); Madriñán Molina, Raúl(Universidad Nacional de Colombia Facultad de Ciencias Agropecuarias);

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With the vinasse application, a residue from the production of fuel ethanol from sugarcane, the effect on the activity of soil microbial biomass an the supply of K+ to crop sweet corn (Zea Mays) in two soils of the Cauca Valley, Colombia were evaluated: Entic Dystropept and Fluventic Haplustoll . Was used a completely randomized design with four replications and five treatments: T1 (100% requirement of K+ with KCl), T2 (100% requirement of K+ with vinasse), T3 (50% requirement of K+ with KCl + 50% with vinasse), T4 (25% requirement of K+ with KCl +75% with vinasse). The microbial biomass was estimated by the fumigation-extraction method. The results were evaluated using analysis of variance, mean comparison test and correlation and resgression (SAS). There were significant differences in the activity and microbial biomass-C by sampling time and among deferent samples. At the end of the crop, the Entic Dystropept had higher content of microbial biomass-C at T2, while in the Fluventic Haplustoll showed higher content in T1. The lowest qCO2 was for the Entic Distropept at T2 and T1 in Fluventic Haplustoll. These treatments had a greater accumulation of biomass in each soil respectively T2 (30 450 kg ha-1) and T1 (21 015.6 ha kg-1).

From the journal

Acta Agronómica

ISSN : 0120-2812