Efeitos do manejo da palha na produtividade e na qualidade da cana-de-açúcar

Abstract

Brazil leads the world ranking of sugarcane production, with ethanol and sugar being the main products produced and expecting for the 22/23 harvest around 628 milions of tons. Since the prohibition of the burnt cane system in the fields (State Decree nº 10.068/2014), and with the insertion of the mechanized harvest in the market, a layer of straw remains on the ground, that can contribute to the development of the plants. Regarding the need for new studies that can contribute to increasing sugarcane productivity and taking account the amount of straw that this crop leaves in the soil, this study aimed to evaluate different forms of management of sugarcane straw. The experiment was carried out in Maringá/PR and the variety used was CTC 9001, evaluating the influence of sugarcane straw management in relation to productivity and quality of the sugarcane crop after mechanized harvesting and without burning in terms of different management systems (T1 - Straw in total area); T2 - Uncovered line and T3 - Racking). It was concluded that there was no significant difference between the different treatments analyzed for the management of sugarcane straw in terms of productivity and quality of the analyzed sugarcane, with water stress being the main cause that affected the development of final yield of the experimente.