Abstract
This study was conducted to evaluate the effect of developed SCB(DSCB) produced by adding N, P and K to SCB liquid fertilizer on the growth of creeping bentgrass. Fertilizer treatments were designed as follows; non-fertilizer (NF), control (CF; chemical fertilizer), 100 DSCB (250 $ml{\cdot}m^{-2}$DSCB), 80DSCB (200 $ml{\cdot}m^{-2}$DSCB) and CF+SCB (CF+250 $ml{\cdot}m^{-2}$SCB). Every treatment was arranged in a randomized complete block design with three replications. In creeping bentgrass, turf color index, chlorophyll index, dry weight, shoot number and nutrient content were measured. The results were as follows; Chemical properties of soil was hardly affected by DSCB and SCB applications. Turf color index and chlorophyll index in DSCB and SCB treatment were increased by 2~3% and 14~19% than those in NF, respectively, and similar to those of CF treatment. As applied to DSCB and SCB, shoot number was increased by 7%, 21%, 36% in 100 DSCB, 80 DSCB and CF+SCB than NF, respectively, and by 19% in CF+SCB than in CF. Supplying DSCB and SCB increased dry weight of creeping bentgrass, compared to CF treatment. Compared with CF, nitrogen and P content in tissue was increased in CF+SCB and in 80DSCB, respectively. These results suggested that applications of DSCB and SCB promoted turf quality and growth of creeping bentgrass by enhancing N and P uptake and shoot number.
본 연구는 SCB 저농도액비애 질소, 인산, 칼리 성분을 첨가한 개량SCB액비(DSCB)의 시비에 따른 크리핑 벤트그래스의 생육에 미치는 영향을 평가하기 위해 수행되었다. 처리구를 비료의 종류와 시비량에 따라 무처리구(NF), 대조구(CF), 100DSCB(250 $ml{\cdot}m^{-2}$ DSCB), 80DSCB (200 $ml{\cdot}m^{-2}$ DSCB) 및 화학비료+SCB(CF+SCB)로 설정하여 처리한 후 엽색지수, 엽록소지수, 건물중, 잔디밀도 및 잔디의 양분함유량을 조사하여 생육을 평가하였다. 시험 전후 토양 분석결과, 처리구에 따른 토양화학성의 변화는 나타나지 않아 DSCB와 SCB의 시비가 골프코스의 토양화학성의 변화에 영향을 마치지 않음을 확인하였다. 엽색지수와 엽록소 지수를 조사한 결과, DSCB와 CF+SCB처리구는 NF보다 각각 2~3%와 14~19% 증가하였고, CF와는 비슷하였다. 잔디밀도 조사결과 DSCB처리구는 CF와 비슷하였고, CF+SCB는 CF보다 약 19% 증가하였다. CF와 비교할 때, 잔디생육량은 DSCB와 SCB처리구에서 증가하였고, 잔디에 함유된 양분은 CF+SCB에서는 질소가, 80DSCB에서는 인이 높게 조사되었다. 이들 결과를 볼때 DSCB와 SCB의 처리는 크리핑벤트그래스에서 양분흡수와 잔디밀도가 증가하여 잔디 품질을 향상시키는 가능이 있는 것으로 평가되었다.
