Abstract
Brazil is a reference in sugarcane production and management; today the state of Goiás is the second largest national producer of the crop. Thus, for the increment in productivity to be greater in one crop compared to another, it is necessary to adopt cultivation practices and practices of financial interest. This work aimed to demonstrate the effect of Nitrogen (N) cycling by sunn hemp in the cultivation of three varieties with different maturity cycles (IAC91-1099 early, RB985476 medium, and RB975242 late) grown in two managements of fertilizations with and without nitrogen in cover, in which the differences of K in the formulations were supplied, in the municipality of Edéia, Goiás. The trial was set up in an entirely randomized delineation in a 3x2 factorial scheme, with 3 varieties and 2 fertilization managements. It was concluded that an efficient planting of sunn hemp can be effective in supplying the N needs of the crop, contributing to the generation of more robust technical and agronomic processes for the sugarcane crop.
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