Abstract
This experiments were carries out to estimate the optimum final cutting date in autumn and the selection of highly adaptable varieties in mountainous pastures of Taekwalyong area. The evaluations were based on the data of varietal differences of dry weight of lant(DW) and yield components of the 1st cutting as affected by various final cutting dates of last autumn. Nine varieties of fall fescue Barvetia, Fuego, Demeter, Safe Barcel Forager, Johnstone, Enforcer and Stef, were used and 4 final cutting date of autumn were $C_1$, cut on 30 Sept. $C_2$, on 14 Oct. $C_3$, on 28 Oct. and $C_4$ on 11 Nov.. respectively. The results obtained were as follows; 1. Between the dry weight of plant(DM) and yield components of 1st cutting were different by various final cutting dates of autumn. The dry weight of plant(DW) was significantly positive correlated with heading characteristics of the 1st cutting in earlier cuttings$(C_1-C_3)$ of autumn, but there was not significant correlated with heading characteristics of the 1st cutting in the latest cutting$(C_4)$ of autumn. 2. The variety of Forager with heavier weight of heading tiller(HTW) and dry weight of tiller(WT) showed the highest dry weight plant(DW) of the 1st cutting in earlier cuttings$(C_1-C_3)$ of autumn, whereas the variety of Barcel with high number of tillers per plant(NT) showed a high dry weight of plant(DW) of the 1st cutting in the latest cutting$(C_4)$ of autumn. 3. Optimum final cutting date and critical period of mountainous pastures in Taekwalyong area were estimated in late September$(C_1)$ and middle October$(C_2)$, sespectirety. 4. The dry weight of plant(DW) of the 1st cutting was significantly negative correlated with final cutting dates in growth period of autumn.
Tall fesuce 9 개 품종을 공시하여 가을철 예취시기를 달리했을 때 l 번초의 수량구성요소와 개체중에 미치는 영향을 조사하여 가을철 최종예취시기를 추정하고 이 지역의 환경조건에 적응성이 높은 품종 을 선발하려고 하였다. l. 가을철 예취시기에 따라서 l 번초의 개체중에 관여하는 수량구성요소의 차이가 인정되었는데 $C_1-C_3$의 l 번초 개체중은 출수관련형질들과 유의한 정상관이 인정되었으나 $C_4$의 1 번초 개체중에서는 유의한 상관이 인정되지 않았다. 2. $C_1C_3$에서는 출수경수가 많고 출수경중과 l 경중이 무거웠던 Forager의 개체중이 많았으나 $C_4$에서는 개체당 경수가 많았던 Barcel의 개체중이 많았다. 3. 대관령지역의 영년초지에서 가을철 최종예취시기의 한계는 $C_1$시기 (9월 30일) 로 추정되었으며 최종 예취시기의 위험기는 $C_2$시기 (10월 14일)의 전후로 추정되었다. 4. 1번초의 개체중은 가을철 예취시기와 유의한 부(負)의 상관을 나타내었다.