Co-Composted Spent Coffee Grounds with Rice Bran and Microbial Agents Promotes Cigar Tobacco Growth and Enhances the Smoking

作者：Kongmeng Ye, Tong Li, Lulu Liu, Yasen Li, Yunkang Lei, Yunkang Lei, Jun Wang, Decong Liao, Xinjie Chen, Lei Liu, Lei Liu · 发表于：Journal of Agriculture and Forestry · 年份：2024 · DOI：10.57237/j.jaf.2024.04.001 · 研究领域：Food composition and properties

Coffee grounds, though agricultural waste, are valuable as organic fertilizer, insect repellent, livestock feed, and biomass energy. This study evaluated four fermented coffee ground fertilizers (T1: coffee grounds, T2: coffee grounds + fermentation agent, T3: coffee grounds + rice bran + fermentation agent, T4: coffee grounds + rice bran) on cigar plants and soil microorganisms. T3 (coffee grounds + rice bran + fermentation agent) significantly enhanced cigar tobacco growth, increasing leaf length and width by 7.22% and 15.07% respectively. Soil organic matter, humic acid, available phosphorus, potassium, nitrogen, and total nitrogen all improved under T3. It also reduced harmful fungi (Fusarium spp., Burkholderia spp., Aspergillus spp., Pythium spp.) and increased beneficial Mortierella spp. Sensory evaluation ranked T3 highest in tobacco quality. This study indicates T3 fertilizer’s effectiveness in promoting cigar plant growth and soil health, offering a reference for its use in cigar cultivation.