Title : Nutrient release model application and greenhouse gas emissions on the incorporated poultry manure biochar for bio-fertilizer application
Abstract:
This batch experiment was conducted to evaluate the impacts of plant major nutrient releases with an application of the modified Hyperbola model and greenhouse gas emissions on the incorporated different poultry manure biochar with organic fertilizer materials. The treatments consisted of the control, the incorporated poultry manure compost biochar with organic fertilizer materials (PMCBF), and the incorporated plasma-activated poultry manure biochar with organic fertilizer materials (APMBF) under redox conditions. The results indicated that the highest soluble amounts of NH4-N and NO3-N were 2168.6 mg L-1 and 21.7 mg L-1 in the control, respectively. Their reduction rates in the PMCBF were 22.2% and 23.0%, respectively, relative to the control. In the control, the highest soluble amounts of PO4-P and K were 681.04 mg L-1 and 120.5 mg L-1, respectively. The reduction rates of PO4-P and K were 32.0% and 18.4%, respectively, in the APMBF compared to the control. The estimations for accumulated NH4-N, NO3-N, PO4-P, and K-releases in all the treatments were significantly (p<0.01) fitted with a modified Hyperbola model. For greenhouse gas emissions, the lowest cumulative N2O was 508.6 mg kg-1 in the soil incorporated with PMCBF, and its reduction rate was 19.4% relative to the control. Therefore, it concluded that the APMBF and PMCBF can be especially useful for controlling PO4-P release and N2O emissions, respectively, for bio-fertilizer applications.
Keywords: Poultry manure biochar, bio-fertilizer, major plant nutrients, soluble nutrients.
