Growth of seedlings and young plants of coffee in composts of textile industry residues

ABSTRACT The final destination of solid industrial waste is one of the main environmental problems currently facing, due to its potential for contamination. With the evolution of environmental policy and awareness, the proper destination of these wastes is stimulated, seeking new technologies to fulfil the demand for the products generated. One of the solutions to this environmental problem is to use these residues as fertilizers in agriculture. The objective of this study was to evaluate the use of toxic textile residues as a substrate component of coffee seedlings and as fertilizer in the initial growth of coffee plants. The study was divided into three experiments: production of seedlings, initial growth of potted plants and in the field. In the production of seedlings, the treatments consisted of different proportions of organic compost residues from the textile industry: 0, 4, 8, 16 and 32% and a conventional treatment of seedling production. In pots and in the field, the same treatments were used with organic compound, and a conventional planting treatment. In the three experiments, plant growth and nutritional analyses were performed. The conventional treatment provided better development of the seedlings and the potted and field coffee plants for most of the evaluated parameters. The treatments between 8 and 16% of organic compost showed an acceptable development of coffee plants, demonstrating their potential as fertilizer.

摘要 工业固体废物的最终处置是当前面临的主要环境问题之一，因其具有污染风险。随着环境政策的完善与公众环保意识的提升，此类固体废物的合理处置受到愈发广泛的重视，亟需开发新技术以满足相关衍生产品的市场需求。解决该环境问题的可行途径之一，是将此类残渣用作农业肥料。本研究旨在评估有毒纺织残渣作为咖啡幼苗栽培基质组分，以及用作咖啡植株初期生长肥料的应用潜力。本研究共设置三项实验：咖啡幼苗培育实验、盆栽植株初期生长实验以及田间种植实验。在咖啡幼苗培育实验中，各组处理采用不同比例的纺织行业有机堆肥残渣：0%、4%、8%、16%及32%，并设置一组常规幼苗培育处理作为对照。在盆栽与田间实验中，采用与幼苗实验相同比例的纺织有机堆肥残渣处理组，并增设常规种植处理作为对照。三项实验均开展了植株生长指标与营养状况分析。在多数评估参数中，常规处理组的咖啡幼苗、盆栽植株及田间植株均展现出更优的生长发育表现。添加8%至16%有机堆肥的处理组，咖啡植株生长状况处于可接受水平，证实其具备用作肥料的潜力。