Resumo

CASTILLO, Alvaro Rincón  e  BECERRA CAMPINO, Julio Jairo. Agronomic response of four sugarcane varieties in Eastern Plains of Colombia. Acta Agron. [online]. 2020, vol.69, n.2, pp.124-129.  Epub 09-Ago-2021. ISSN 0120-2812.  https://doi.org/10.15446/acag.v69n2.70649.

In an Oxisol in the Eastern Plains of Colombia, three varieties of sugar cane Cenicaña Colombia (CC) (CC 8475, CC 833895, CC 8592) and one from the Dominican Republic (RD 7511) were established and evaluated in order to determine the production biomass and leaf area. In a randomized complete block design with three replications, each month, between 7 and 11 months after sowing, agronomic development, green biomass production, sucrose concentration and leaf area were evaluated. The total biomass production (leaf + stem) was higher (P <0.05) in CC8475 and RD7511 varieties, with yields of 110 and 106 t / ha, and 170 and 161 t / ha at 7 months and 11 months after sowing, respectively. A high correlation (r2> 0.90) was found between the leaf area measured with a planimeter and the product obtained in length x width of the leaf in the four varieties evaluated. No difference (P> 0.05) was found between the averages of area / stem (6000 cm2) in the varieties. The results obtained show that the most productive varieties in the region were CC8475 and RD7511.

Palavras-chave : Acid soils; Biomass; Brix degrees; Leaf area; Oxisol.

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