Best Practices of Nitrogen Fertilization Management for Sugarcane Under Green Cane Trash Blanket in Brazil
详细信息 查看全文
- 作者：Sérgio Gustavo Quassi de Castro ; Sérgio Tadeu Decaro Jr.…
- 关键词：Green cane ; Saccharum spp. ; Crop management ; Fertilization
- 刊名：Sugar Tech
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：19
- 期：1
- 页码：51-56
- 全文大小：
- 刊物主题：Agriculture;
- 出版者：Springer India
- ISSN：0974-0740
- 卷排序：19
文摘
The low efficiency of nitrogen (N) use from fertilizer applied to sugarcane is a major concern worldwide threatening the sustainability of sugarcane production. Further, the significance of N losses to the environment is becoming more important as global warming becomes a more significant issue. Improving nitrogen use efficiency is a major challenge for sugarcane cropping systems worldwide. Amongst other factors, N application method has a significant effect on the efficiency with which N is used by the crop. In Brazil, the sugar industry is rapidly moving towards green cane harvesting and the maintenance of a trash blanket (GCTB) between crops in a cycle. However, there is limited information regarding the most appropriate nitrogen fertilizer placement between ratoon crops in a GCTB system. The aim of this research was to evaluate the effect of different nitrogen application methods on the productivity of ratoon sugarcane being grown under a green cane trash blanket (GCTB) system. The application methods tested were: (1) control (no fertilizer applied), (2) fertilizer incorporated at 0.2 m in the centre of each interrow, (3) fertilizer applied to the GCTB surface in both sides of the row, and (4) fertilizer incorporated at 0.08 m depth in both sides of the row. The incorporation of the fertilizer at 0.08 m depth on both sides of the row resulted in the best agronomic performance, producing approximately 13 and 12 % more cane tonnage and sugar yield, respectively, when compared to band surface application, which was the second best method.