1. China Tobacco Sichuan Industrial Co., Ltd., Chengdu 610100, China
2. College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
3. Sichuan Tobacco Corporation Deyang Branch, Deyang 618400, China
| Abstract: | 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. |
| Keywords: | Coffee Grounds; Cigars; Organic Fertilizer; Soil Fertility; Soil Bacteria; Soil Fungi |
| DOI: | 10.57237/j.jaf.2024.04.001 |
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