The use of adapted varieties of sugarcane and the soil management after its harvest in mechanized systems may affect the incidence of pests and the productivity of the sugarcane plantation. The objective of this work was to evaluate the influence of plant residues of 18 sugarcane varieties submitted to different harvest management systems on the agricultural productivity and incidence of moth borer and root froghopper. The treatments were: straw without triturating and cultivation (PST/SC); straw without triturating/with disk harrow cultivation (PST/CC); triturated straw/with disk harrow cultivation (PT/CC). The yield of stalk in the sugarcane is favored by the management, with cultivation, of the straw of the green plant, mechanically harvested, without alteration in the incidence of moth borer and root froghopper. The variety SP87-365 of sugarcane is a viable and rentable option in any system of management green sugarcane, with adaptation to the mechanical harvest and the edaphoclimatic conditions of the region of Ribeirão Preto, São Paulo State, Brazil. The incidence of moth borer and root froghopper can sufficiently be reduced with the adoption of the varieties SP88-817 and SP76-112 of sugarcane in any system of straw management of the green sugarcane mechanically harveste, and is minimized by the mechanical harvest of the green sugarcane followed by straw triturating and the use of disk harrow in the inter-row.
Saccharum spp; Diatraea saccharalis; Mahamarva fimbriolata; green sugarcane; trash
