Alembic vinasse and nitrogen in sugar cane in irrigated and non-irrigated areas

摘要

With the purpose of studying the effects of the application of alembic vinasse, both with and without nitrogen complementation on the yield and technological quality of sugar cane in irrigated and non-irrigated area, this work was conducted in the area of João Mendes Alembic (JM), situated in the town of Perdões, southern region of the State of Minas Gerais. Under each condition (with and without irrigation), the following treatments were studied: T1 (0 m3 ha-1 de vinasse + 0 kg ha-1 de N); T2 (100 m3 ha-1 de vinasse + 0 kg ha-1 de N); T3 (150 m3 ha-1 de vinasse + 0 kg ha-1 de N); T4 (200 m3 ha-1 de vinasse + 0 kg ha-1 de N); T5 (0 m3 ha-1 de vinasse + 60 kg ha-1 de N); T6 (100 m3 ha-1 de vinasse + 60 kg ha-1 de N); T7 (150 m3 ha-1 de vinasse + 60 kg ha-1 de N) e T8 (200 m3 ha-1 de vinasse + 60 kg ha-1 de N). Under the irrigated conditions, the average yield of the stems was 15.25% greater than the one obtained in the non-irrigated area. The application of 150 m3 ha-1 of alembic vinasse complemented by 60 kg ha-1 of N was the treatment which provided the best result, except for the content of cane fiber (%).