A Detail Investigation of Major Diseases Occurrence and Pathogen Population on Turfgrass Cultivation in Nationwide

Abstract

We investigated turfgrass diseases and inoculum density at nationwide turfgrass cultivation sites in year of 2013. Occurrences of large patch and rust disease appeared in September. Brown patch recorded in September to October at Namhea and Pythium blight disease occurred outbreaks in early July at Namhea site. Some sites in Namhea damaged 3% area of total cultivation field by Sclerotinia homoeocarp. In Daepyeong (Gyeongnam), Fairy ring and large patch were recorded. Severe takeall and fairy ring have been observed in Gochang-si. Multi-site in Cheongju-si, brown patch was observed in pandemic level. Interesting enough, a cool-season turfgrass cultivate sites in Pyeongtaek-si brown patch, leaf blast, summer patch, and Curvularia leaf spot were investigated during the surveys period. Inoculum densities (Rhizoctonia spp.) at turfgrass cultivations sites were increased as cumulatively in all survey sites. The investigation result indicated that the disease occurrence and pathogens are similar as diseases in golf courses.

Investigation of Fungicides Inhibitory Effect of on Summer Patch Disease, Caused by Magnaporthiopsis poae, in Kentucky bluegrass

“…국내에서는 골프장 페어웨이나 티잉그라운드에 식 재된 Kentucky bluegrass에 주로 심각한 피해를 일으킨다. 국내에 여름잎마름병에 대한 자료는 2014년 여름잎마름병 에 대한 발생 조사와 2016년 Magnaporthiopsis poae에 의해 병이 발생한다는 보고가 있다 (Min et al, 2014;Han et al, 2016). 여름잎마름병 병원균에 감염된 잔디의 뿌리에서 주로 암 갈색의 외생포복균사(ectotrophic runner hyphae)가 관찰되 며 되며 비대해진 생장정지구조(growth cessation structure) 나 흡기(hyphopodium)가 간혹 발견된다 (Clarke and Gould, 1993;Kackley et al, 1990;Smiley et al, 1992).…”

Turfgrass Probiotics Reduce Population of Large Patch Pathogen and Improve Growth of Zoysiagrass

“…또한, 장기간 동안 반복적으로 과도 한 농약을 사용하고, 잔디갱신, 대취 관리 등을 소홀히 함으로써 토양 생육환경이 악화되고 있다 (Hwang and Choi, 1999;Kim, 2006). 이러한 재배환경상의 여러 가지 장해로 인해 야생의 잔디보다 재배지 잔디가 병원균에 쉽게 감 염될 수 있는 조건을 갖추고 있으며 (Paik et al, 1998), 특정 병해 발생으로 고품질 잔디 생산의 주 위협요소가 되고 있다 (Min et al, 2014).…”