Study on Transplanting Cultural Methods of Turf Seedling VI. Depression Effect of Biennial Weed Species as Mowing Height

This study was carried out to control biennial weed which gives a lot of damage to landscaped and early growth of lawns in early spring. The results obtained from the mowing experiment are as follows. (1) Average of occurrence rate of weed species of the total treatments was 17.9%, (2) Occurrence rate of weed species was as 24.7% at 12.5 mm low mowing section. The rate indicates that the lowest weed depression effect was appeared at the lowest mowing among 4 mowing sections. (3) Occurrence rate of weed species was 10.6% at 22.5 mm mowing section. The highest weed depression effect among the 4 mowing sections was observed at the 22.5 mm mowing section. (4) Occurrence rates of weed species were 18.2% and 18.3% at 32.5 mm and 42.5 mm high mowing section, respectively.

잔디(Zoysia japonica Steud.) 육묘 이식재배법에 관한 연구 VI. 예초고에 따른 월년생 잡초종의 억제효과

잔디 실생묘를 이식하여 조성된 잔디밭에서 초봄의 생육 초기에 많은 피해를 주고 있는 월년생(동생) 잡초를 방제하고자 예초실험을 실시한 결과 요지는 다음과 같다. (1) 전체 예초 시험구별 잡초발생율은 평균 17.9%였다. (2) 저 예초 시험구인 12.5 mm 구에서 잡초발생율은 24.7%로 높게 나타나, 4개의 예초 시험구 가운데 잡초억제효과가 가장 낮은 것으로 나타났다. (3) 22.5 mm 구에서는 10.6%의 잡초발생율을 보여 가장 높은 잡초억제효과를 나타내고 있다. (4) 고 예초 시험구인 32.5 mm 구와 42.5 mm 구에선 각각 평균보다 다소 높은 18.2%와 18.3%의 잡초발생율을 나타냈다.