Abstract
본 연구는 규산 함유 액비(LFSi)의 시비에 따른 잔디의 생육과 품질의 변화를 확인하기 위해 잔디의 가시적 품질, 줄기 밀도, 뿌리 길이, 엽록소 함량, 예지물 및 양분 함량을 조사하였다. 처리구는 대조구(CF), LFSi 1,000배 처리구(SiF-1), LFSi 500배 처리구(SiF-2) 및 LFSi 250배 처리구(SiF-3)로 구분되었다. LFSi 처리 전후에 토양화학성은 차이를 나타내지 않았다. LFSi 처리구와 대조구를 비교하였을 때, 잔디 품질은 7월, 10월 및 11월 조사에서 높았으며, 엽록소 함량과 잔디 예지물은 10월 27일 조사에서 증가하였다. 줄기 밀도, 뿌리 길이, 잎조직 내 질소 함량 및 칼륨 함량은 LFSi 처리구에서 증가하였다. 잔디 잎 조직 중 규소 함량은 칼리 함량이나 줄기 밀도와 정의 상관성을 보였고, 줄기 밀도는 잔디 품질이나 엽록소 함량과 각각 정의 상관성을 나타내었다. 이 결과들을 종합해 볼 때, 크리핑 벤트그래스에서 규산 함유 액비의 시비는 잔디의 잎 조직 중 칼륨 함량이나 줄기 밀도가 증가되어 가시적 품질이 향상되는 것을 확인 할 수 있었다. Superintendents have used a silicate fertilizer to improve a resistance of turfgrass against several diseases, drought damage and wear stress. This study was conducted to evaluate the effect of liquid fertilizer containing silicate (LFSi) on changes of turfgrass quality and growth by investigating visual quality, chlorophyll content-chlorophyll a, chlorophyll b, and total chlorophyll, root length, shoot length, dry weight of clipping, and nutrient content in leaves tissue. Treatments were designed as follows; control fertilizer (CF), SiF-1 (CF + <TEX>$1ml\;m^{-2}$</TEX> LFSi), SiF-2 (CF + <TEX>$2ml\;m^{-2}$</TEX> LFSi), and SiF-3 (CF + <TEX>$4ml\;m^{-2}$</TEX> LFSi). As compared with CF, soil chemical properties, visual turfgrass quality, chlorophyll content, and dry weight of clipping of LFSi treatments were not significantly. Contrastingly, shoot density, root length, and the content of nitrogen or potassium were increased by application of LFSi. The content of Si in the tissue was positively correlated with potassium content or shoot length, and similarly shoot density positively with chlorophyll content or visual quality, respectively. These results suggested that the application of LFSi improved the turfgrass quality by increasing shoot density or K content in leaf tissue of creeping bentgrass.
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