NGHIÊN CỨU CHẾ BIẾN PHÂN HỮU CƠ VI SINH TỪ VỎ CÀ PHÊ

The data of analysis indicated that coffee husk contained 27.3 - 28.8% OC, 1.94 - 2.02% N, 0.18 - 0.21% P2O5, more 3% K2O and some micro elements. The processed experiment of coffee husk was implemented at Dak Lak province in 2008, consisted of treatments of coffee husk; coffee husk with compost 1 (Tricoderma sp, Streptomyces owasiensis); and coffee husk with compost 2 (Saccharomyces cerevisiae, Bacillus subtilis, Streptomyces thermocoprophilus). The results showed that composting coffee husk with microorganism groups reduced in acidity, OC content and C/N ratio of materials, in comparison with control (pHH2O form 4.8 up to 5.2 - 5.6; OC from 28.4% down to 21.3% - 22.8%; C/N ratio from 15.3 down to 11.0 - 11.3).