Effect of coffee residue and cropping system - Workayehu, Tenaw
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Dumping and burning of coffee residue brought a serious environmental problem. A study was conducted to evaluate decomposition and mineralization of N from coffee residue in a pot, and its effect on soil physicochemical properties, crop yield, and apparent nutrient balance in the field. Decomposition rate (KD) was controlled by lignin (L) and nitrogen (N) contents, and L/N ratio (R2 = 0.975 , n = 36). Immobilization of soil N persisted for the entire 120 days, and release of N was controlled by lignin and cellulose contents, residue N and L/N ratio (R2 = 0.982 ). In the field, water use…mehr

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Produktbeschreibung
Dumping and burning of coffee residue brought a serious environmental problem. A study was conducted to evaluate decomposition and mineralization of N from coffee residue in a pot, and its effect on soil physicochemical properties, crop yield, and apparent nutrient balance in the field. Decomposition rate (KD) was controlled by lignin (L) and nitrogen (N) contents, and L/N ratio (R2 = 0.975 , n = 36). Immobilization of soil N persisted for the entire 120 days, and release of N was controlled by lignin and cellulose contents, residue N and L/N ratio (R2 = 0.982 ). In the field, water use efficiency (WUE) increased significantly by 78% for maize. Soil amended with coffee residue showed increase in moisture content, total N (TN) and OC content. The residue increased the physicochemical properties of the soil such as moisture (38%), TN (7.6%), and OC (8%) compared to the control. Therefore, utilization of coffee residue would provide not only as an alternative source of plant nutrients but also alleviates soil fertility and reduce environmental pollution problems.
Autorenporträt
I graduated with B.Sc. in plant science at Addis Ababa University. After graduation I was the national sunflower research coordinator for two years. I again joined Addis Ababa University for my M.Sc. majoring in Agronomy. I was head department of agronomy and crop physiology, and crop science department at regional level.