Variedades de cana-de-açúcar submetidas à irrigação suplementar no cerrado goiano

Resumo

The state of Goias is the second largest producer of sugar cane in Brazil. However, it still has low productivity, mainly due to the lack of varieties adapted to the region and the typical water deficit. The experiment aimed to evaluate the performance of sixteen sugarcane varieties submitted to supplementary irrigation in the “Cerrado” (Brazilian Savanna).The experiment was carried out in Goianesia-GO (Brazil), in a Red yellow dystrophic latosol (Oxisol), from April 2011 to May 2012. Randomized blocks design was used, with bifatorials treatments, in sixteen sugar cane varieties: CTC2, CTC4, CTC9, CTC11, CTC15, CTC18, IAC87-3396, IAC91-1099, IACSP94- 3046, IACSP94-2094, IACSP94-2101, IACSP95-5000, RB857515, RB92579, RB966928 and SP86-0042; and five evaluation time: 113, 145, 174, 203 and 285 days after plantation (DAP). The supplementary irrigation was of 50% water requirement using a sprinkler system. Varieties performance was evaluated through: tillering, growth, productivity and performance of industrial plants. The results showed significant differences between the varieties. The best results were obtained for varieties CTC9, CTC11, IAC87-3396, IAC91-1099 and SP86-0042, to productivity and industrial performance, which can be recommended in savannah cultivation with supplementary irrigation (50%).

Descrição

Palavras-chave

Saccharum officinarum, Manejo da irrigação, Déficit hídrico, Aspersão

Citação

CAMPOS, Patrick F.; ALVES JÚNIOR, José; CASAROLI, Derblai; FONTOURA, Patricia R.; EVANGELISTA, Adão Wagner Pêgo. Variedades de cana-de-açúcar submetidas à irrigação suplementar no cerrado goiano. Engenharia Agrícola, Jaboticabal, v. 34, n. 6, p. 1139-1149, nov./dez. 2014.