본 연구는 동애등에분변토(soldier fly casts, SFC)를 함유하는 토양개량제를 혼합한 모래토양에서 켄터키 블루그래스의 생육과 특성에 대해 조사하였다. 처리는 토양개량제의 조성에 따라 무처리구(NA: 100% sand), 대조구(control: cocopeat), SFC25 처리구(SFC25: 75% cocopeat+25% SFC25), SFC50 처리구(SFC50: 50% cocopeat+50% SFC50), SFC75 처리구(SFC75: 25% cocopeat+75% SFC75) 및 SFC100 처리구(SFC100: 93% sand+7% SFC100)였다. SFC50, SFC75 및 SFC100 처리구의 토양 유기물과 전질소는 무처리구와 대조구보다 증가하였다. SFC75와 SFC100 처리구는 엽색 지수, 엽록소 지수, 잔디 예지물량 및 질소, 인, 칼륨의 흡수량은 무처리구와 대조구보다 증대되었다. 지상부와 지하부의 생육은 SFC75와 SFC100 처리구에서 증대되었으나 T/R ratio는 통계적으로 유의적인 차이를 나타내지 않았다. SFC25 처리구의 토양 중 특성, 잔디의 생육 및 잔디의 양분 흡수 등의 변화는 대조구와 유사하였다. SFC의 처리량은 토양 유기물, 전질소, 잔디 예지물 및 양분(N, P, K)흡수량과 정의 상관성(P<0.05)을 나타냈다. 상기 결과들을 통해 비교할 때, SFC의 처리는 양분의 흡수가 증대되어 잔디 품질과 생육을 증대시키고, 토양 중 유기물 함량이 증대되었다.
This study was conducted to evaluate effects of root zone blending with soil amendments containing soldier fly cast (SFC) on the soil properties and the growth of Kentucky bluegrass. Treatment were as follows. No amendment (NA), control (cocopeat 100%), SFC25 (cocopeat 75%+SFC 25%), SFC50 (cocopeat 50%+SFC 50%), SFC75 (cocopeat 25%+SFC 75%) and SFC100 (SFC100%). In the root zone soil, the content of organic matter (OM) and total nitrogen (T-N) of SFC50, SFC75 and SFC100 treatment was increased than those of NA or control. As compared to NA or control, turf color index, chlorophyll index, clipping yield and uptake amount of nitrogen, phosphorus and potassium in the SFC75 and SFC100 treatment were increased. While the dry weight of shoot and root in the SFC75 and SFC100 treatment was increased than that of NA, their ratios of top and root (T/R ratios) not significantly different. The change of soil properties, turfgrass growth and quality, and nutrient uptake of SFC25 treatment was similar to control. Correlation coefficient between SFC rate in the soil amendment and soil properties or turfgrass growth was significantly positive (P<0.05). These results indicated that application of SFC as soil amendment improved the turfgrass growth and quality by prompting to take up N, P and K from the root zone, and was increased the content of organic matter and total nitrogen.