토양개량제로서 가축분연소바닥재의 처리에 의한 퍼레니얼 라이그래스의 생육 특성

This study was conducted to evaluate the effects on growth and turfgrass quality of perennial ryegrass in the sandy soil blended with bottom ash produced after combusting dry livestock manure (BAL). Treatments were designed as follows; No-fertilizer (NF, 100% sand), Control [3 N active ingredient (a.i.) g/m 2 , 100% sand], 3%BAL (3N a.i. g/m 2 , 3%BAL+97% sand), 5% BAL (3N a.i. g/m 2 , 5%BAL+95% sand), 7% BAL (3N a.i. g/m 2 , 7%BAL+93% sand) and 10% BAL (3N a.i. g/m 2 , 10%BAL+90% sand). Compared to NF and the control, BAL treatments increased soil pH, electrical conductivity (EC), available phosphate (Av-P 2 O 5 ), and exchangeable potassium (Ex-K). There were no significant differences in turf color index, chlorophyll content, shoot length, clipping yield, or shoot dry weight between BAL treatments and the control. However, root dry weight, P and K concentrations, and nutrient uptake were higher in the BAL treatments compared to the control. The BAL application rate was positively correlated with root growth and nutrient uptake (p≤0.05). These results indicated that the application of BAL as a soil amendment improved root growth and nutrient uptake by supplying phosphate and potassium in the sandy soil.