Abstract

CANCHILA, E.R et al. Agronomic evaluation of accessions of Brachiaria spp. under the agroecological conditions of Barrancabermeja, Santander, Colombia.: I. First year of evaluation. Pastos y Forrajes [online]. 2008, vol.31, n.2, pp. 1-1. ISSN 0864-0394.

Twenty-four accessions of Brachiaria spp. were evaluated in 72 plots of 21 m², with the objective of selecting those with the best response under the conditions of low fertility acid soils of the Barrancabermeja region. Germination was carried out in nursery with sexual seed. One hundred thirty eight days after sowing and after a homogenization pruning the first year of evaluation started, with cuttings every 42 days until 390 days. The emergence and cover percentage, plant height, forage production, leaf percentage and incidence of pests and diseases were determined. The analyses were performed by means of the statistical pack SPSS 10.0. According to the MCA the most variable indicators were: height, forage production, leaf percentage, emergence percentage, incidence of pests and diseases and cover percentage. The species B. dictyoneura (CIAT-6133), B. brizantha (CIAT-16488, CIAT-16212, CIAT-26318, CIAT-16121, CIAT-16113 and CIAT-16322), B. decumbens (CIAT­606) and B. humidicola (CIAT-26159), stood out.

Keywords : Acid soil; Brachiaria spp; evaluation.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )