Resumo

FERNANDEZ DE ULLIVARRI, J. et al. Stalk population dynamic, yield components and sugar cane production in different management systems in Tucumán, Argentina sugar cane fields. Rev. agron. noroeste arg. [online]. 2017, vol.37, n.1, pp.09-17. ISSN 0080-2069.

Three alternatives (treatments) of sugarcane trash blanket management were evaluated in this paper: a) harvest without burning and removing the residue after harvest (SR); b) harvest without burning and trash blanket maintenance (CR); and c) harvest without burning and trash blanket incorporation (RI). The trial was carried out in Simoca (Tucumán, Argentina). The following variables were evaluated: a) stalks population dynamics, b) yield components and c) sugarcane production. Sugar cane evaluated cultivars were LCP 85-384 and TUC 95-10. The experimental design was completely randomized with three replications per treatment. Each plot consisted of five rows of 10 m long. In the population dynamic study, typical patterns were observed: an increase in the number of stalks during emergence and tillering, reaching its peak by the end of tillering, and a decrease afterwards until the final population. Stalks population at the end of tillering was higher in SR than in SC; however, at harvest there were no differences between treatments. Treatments did not differ in weight, height and stalks diameter at harvest. Sugarcane production/ha showed no differences between treatments, although there was a trend for higher production in CR. At early growth stages, SR showed higher stalk populations. However, at harvest there were no differences between treatments in yield components or sugarcane production; even when a trend for higher production when trash blanket was left was observed.

Palavras-chave : Green cane; Trash blanket; Sustainability.

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