Harvest dates and the productivity in sugarcane genotypes, in first ratoon

Paulo Mauricio Centenaro Bueno, Edelclaiton Daros, Ricardo Augusto de Oliveira, José Luis Camargo Zambon, João Carlos Bespalhok Filho, Heroldo Weber

Abstract


The sugarcane shows different performances when submitted to different production environments and harvest dates. This work will assist in choosing the better harvest date for each genotype, in a way to show its greater agro-industrial potential. The aim of this work was to evaluate sugarcane genotypes’ agro-industrial productivity in different harvest dates, in first ratoon, in the year of 2007. The experiment was installed on march 15th, 2005, at the Usina Alto Alegre, in Colorado, northwest of Paraná State. The experiment’s place has ground classified as latossolo vermelho-amarelo, and climate classified as Cfa, according to Köppen classification. The statistical design used was completely randomized design in factorial arrangement of 3x10, being three harvest dates (April 15th, July 15th and October 15th) and ten genotypes. It was evaluated Pol % cana (sugar polarization), TCH (ton ha-1 of cane) and TPH (ton ha-1 of Pol). The experimental plot was composed by four rows, with 1,10 meters between each row and 8,0 meters of length, and 18 buds per linear meter. In the conditions of the present work, there was significant interaction between harvest dates and genotypes, considering that the genotypes suffered influence from the harvest dates in its agro-industrial productivity. The decision of the harvest date of each sugarcane genotype must not be based only on the technological standards, therefore, a high value of Pol can cannot mean high agro-industrial productivity.

Keywords


Saccharum spp.; Cultivate; Season; Cut, Ripening.



DOI: http://dx.doi.org/10.5433/1679-0359.2012v33n6Supl1p2715

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433 / 1679-0359
E-mail:  semina.agrarias@uel.br
Este obra está licenciado com uma Licença  Creative Commons Atribuição-NãoComercial 4.0 Internacional