Production of pre-sprouted sugarcane seedlings using carnauba bagana as substrate

ABSTRACT Sugarcane seedling quality is strongly influenced by the substrate used. Currently, alternative substrate sources from the sugarcane industry itself have been used; however, there is no specific substrate to produce pre-sprouted seedlings. This study aimed to evaluate the quality of pre-sprouted sugarcane using substrates with different proportions of carnauba bagana (0, 20, 40, 60, 80 and 100 %) plus soil. The experimental design was completely randomized, with six treatments and five replicates. Pre-sprouted seedlings cultivated using substrate composed by 80 % of carnauba bagana showed the best response for number of leaves, diameter, shoot length, shoot, root and total dry mass, and Dickson Quality Index, owing to the improvement in the substrate physical and chemical characteristics.

摘要：甘蔗幼苗品质受所用基质（substrate）的显著影响。当前，已有研究采用甘蔗产业自身产生的替代性基质原料，但尚未有专用于预发芽幼苗生产的专用基质配方。本研究旨在评估不同比例巴西棕榈糠（carnauba bagana，0%、20%、40%、60%、80%及100%）与土壤混合制成的基质，对预发芽甘蔗幼苗品质的影响。试验采用完全随机设计，设置6个处理组与5次重复。结果显示，采用80%巴西棕榈糠配比的基质培育的预发芽幼苗，在叶片数、茎粗、地上部长度、地上部干物质量、根部干物质量及总干物质量，以及迪克森品质指数（Dickson Quality Index）上均表现最佳，这归因于该基质的理化特性得到了优化提升。