해조추출물과 2종의 키토산 제형을 뗏장잔디 생산농장에서 가을철에 creeping bentrgass (Agrostis palustris Huds) Penn-A1 품종과 Kentucky bluegrass (Poa pratensis L.) 혼용품종(Midnight 33%, Moonlight 33%, Prosperity 33%)에 살포하였다. 잔디 질에 미치는 잔디 잎색, 엽록소함량 및 NDVI을 조사하였다. 키토산과 해조추출물 처리는 엽록소 함량과 잔디생장에서 유의성 있게 증가하였다. Kentucky bluegrass 종의 혼용품종과 creeping bentrgass 종의 Penn-A1 품종의 잔디에 엽록소 함량과 잔디생장이 키토산 제형 과 해조추출물의 엽면시비에 의해 유의성 있게 증가하였다. 잔디의 잎색은 유의성이 없었다. 이들 결과는 키토산 제형과 해조추출물이 가을철 골프장에 잔디관리에 도움이 될 것으로 생각한다.
The seaweed (Ascophyllum nodosum) extracts and chitosan formulations were sprayed on species of creeping bentrgass (Agrostis palustris Huds) cultivar "Penn A1" and species of Kentucky bluegrass (Poa pratensis L.) mixed cultivars (Midnight 33%, Moonlight 33%, Prosperity 33%) during fall season in sod farm. Turf color, chlorophyll contents and NDVI (Normalized Difference Vegetation Index) to affect turf qualities were investigated. There were detected significantly difference on chlorophyll contents and DNVI with seaweed extracts and chitosan formulations treatments. The contents of chlorophyll and NDVI on species of Kentucky bluegrass mixed cultivars and species of creeping bentgrass cultivar "Penn A1" were significantly increased by foliar spray with chitosan formulations and seaweed extracts. There was not a significantly difference on leaf color in two species within cultivars. These results suggested that chitosan formulations and seaweed extracts may help for turfgrass managements in the golf course during fall season.
