NUTRIENT ACCUMULATION AND DECOMPOSITION OF SUGAR CANE TRASH AS A FUNCTION OF VINASSE DOSES

作者：Andreotti Marcelo^*; Soria Jose Eduardo; Costa Nidia Raquel; Gameiro Roberta de Aquino; Rebonatti Melina Daniel

来源：Bioscience Journal, 2015, 31(2): 563-576.

• Saccharum spp
• Fertigation
• Nutrient cycling

Understanding the influence of vinasse application on trash decomposition and its effects on soil chemical attributes and sugar cane culture is essential for the good management of the production system. The objective of this study was to assess the time of decomposition and nutrient cycling of the green ratoon cane's trash, and their effects on soil fertility and technological components of crops, in terms of vinasse doses. The study was developed in the northwest region of Sao Paulo State - Brazil, under Eutrophic Ultisol, using the RB855453 variety. The experimental design was randomized blocks with split plot in time. The treatments were composed of four doses of vinasse (0, 50, 100 and 200 m(3) ha(-1)). There was a 20.9% reduction in the amount of crop residue remaining after one year review. The vinasse doses increased the ratoon cane's yield, without interfering in the raw material quality. The green cane system, in which the trash is deposited on the soil and vinasse application, changes the dynamics of the trash decomposition and modifies the soil fertility, contributing positively to the crop yield.

• 出版日期2015-4