Resumo

FERNANDEZ-GALVEZ, Yoslen et al. Agronomic characterization of forage varieties of Saccharum spp. in four harvest cycles. Pastos y Forrajes [online]. 2024, vol.47  Epub 25-Maio-2024. ISSN 2078-8452.

Objective: To characterize agronomic variables in forage varieties of Saccharum spp. in four harvest cycles.

Materials and Methods: A study was carried out in areas of the Florida Sugarcane Research Institute, Camagüey, Cuba. An experiment was planted in the spring cycle (March) under rainfed conditions, with a randomized block experimental design. Three treatments (forage varieties C97-366, C99-374 and control My5514) and three replicas were established. Agronomic variables of forage potential were evaluated at 12 months of age (March) during four harvest cycles (2015-2018). Analysis of variance and multiple mean comparison test (Duncan) were performed when there were significant differences between varieties. The statistical package STATGRAPHICS Plus®, Version 5 for Windows was used.

Results: Statistically significant differences (p < 0,05) were found between varieties for all variables evaluated per harvest cycles, except for stem length from the first to the third shoot. The highest productivity in the study was achieved by varieties C97-366 and C99-374 with average yields for the four cycles of 85,4 and 104,4 t ha-1 of green biomass and 28,9 and 32,6 t ha-1 of dry biomass, respectively. These yields exceeded the control, which reached 83,7 and 26,0 t ha-1 of green and dry biomass.

Conclusions: Varieties C97-366 and C99-374 showed great forage potential, for which their use is recommended for ruminant feeding in areas of animal husbandry farms with similar characteristics.

Palavras-chave : adaptation; animal feeding; biomass.

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