완효성 비료 처리 후 크리핑 벤트그래스(Agrostis palustris Huds.) 생장 특성

This study was conducted to evaluate the effects of application of slow release fertilizer such as methylene urea (MU) and isobutylene diuera (IBDU) on the growth and quality of creeping bentgrass (Agrostis palustris Huds.). Treatments were designed as follows; No-fertilizer (NF), Control [straight fertilizer (SF) 3N active ingredient (a.i.) g/m 2 /month], MU (MU 3N a.i. g/m 2 /month), and IBDU (IBDU 3N a.i. g/m 2 /month). As compared to NF, turf color index, chlorophyll content, clipping yield, and nutrient (N, P, K) uptake amount of MU and IBDU treatment were not significantly different (p≤0.05). The growth rate of MU or IBDU were 43.1% and 43.7% within 10 days after treatment (DAT) of fertilizers, respectively, that decreased than that of control, while 34.5% and 34.9% for 10-20 DATs, increased. These results indicated that as applied of MU and IBDU in the creeping bentgrass, the growth rate of turfgrass was lower than that of SF, and nutrient available period of slow release fertilizers increased.