Evaluación de variables agrobotánicas en cultivares híbridos de Saccharum spp.

Abstract

Objective: To evaluate a group of agrobotanical variables in hybrid Saccharum spp. cultivars for sugar and forage production. Materials and Methods: An experiment in a randomized block design with three replications was established at the Holguin Sugarcane Research Institute. Six cultivars and a control (My5514) were used. Thirteen agrobotanical variables and phytosanitary performance under natural conditions were evaluated. Variance analysis and multiple comparison of means test (Tukey) were performed when there were significant differences between cultivars. Results: All cultivars maintained the same performance pattern for the variables pol percentage and fiber content. Cultivars B7274 and C86-12 significantly outperformed the control in the agricultural and sugar yield variables with values higher than 123 and 22,5; respectively. The best results in stem length and diameter were obtained in C86-156, SP70-1284 and C86-12, with no significant differences with the control. In the variable stem fresh weight, most of the cultivars significantly outperformed the control. Cultivar B7274 (19,5 %) achieved the best values for fresh weight of the top, although in general all cultivars had similar results to the control. Conclusions: The cultivars showed performance similar to the control in most of the agrobotanical studied variables. B80250 and C323-68 stood out.

Keywords

• animal feeding
• biomass
• crude fiber