Tall fescue 품종의 환경적응성 V. 가을철 예취시기가 2번초의 개체중과 수량구성요소에 미치는 영향

Environmental Adaptation of Tall Fescue varieties in Mauntainous pastures V. Effect of Final cutting time in autumn on the dry Weight ofplant ( DW ) and yield components of the 2nd growth

대관령 지역에서 Tall fescue 9개 품종을 공시하여 가을철 예취시기에 따른 2번초의 수량구성 요소와 개체중의 변화를 검토하여 이 지역의 환경조건에 적응성이 높은 품종을 선발하여고 하였으며, 얻어진 결과를 요약하면 다음과 같다. 1. 2번초에서 개체당 경수가 많은 품종(Barcel, Forager)이 개체중도 무거워서 이지역의 환경조건에 적응성이 높은 품종이라고 생각되었다. 2. 가을철 예취시기에 따른 2번초의 개체당 경수는 개체중과 0.1%의 유의한 정상관을 나타냈으나 1경중은 유의한 상관이 인정되지 않았다. 3. 2번초의 편균 개체중이 최대에 도달하는 가을철 예취시기는 $C_3$(10월28일)으로 추정되었다. 4. 2번초의 평균 개체중은 1번초의 평균 개체중과 반비례적인 관계를 나타내었다.

This experiment was carried out to select the best adaptable varieties of Tall fescue in mountainous pastures of Taekwalyon area. The evaluation was based on the data of varietial differences in the dry weight of plant@W) and yield components of the 2nd growth. Nine varieties of Tall fescue examined were Barcel, Barvetia, Demeter, Enforcer, Forager, Fuego, Johnstone, Safe and Stef. And, the final cutting times were Sept. 30 ($C_1$), Oct.14 ($C_2$),Oct. 28 ($C_3$), and Nov. 11($C_4$). The reults were summarized as follows: 1. Barcel and Forager with many tillers per plant(NT) showed a high dry weight of plant@W) of the 2nd growth. 2. The dry weight of plant(DW) of the 2nd growth indicated significantly positive correlation with the number of tillers per plant(NT), but there was not significant correlation with the dry weight of tiller(WT). 3. The maximum dry weight of plant@W) of the 2nd growth was obtained at $C_3$(28 Oct.). 4. The dry weight of the 2nd growth showed an inverse relations with the dry weight of the 1st growth as affected by various final cutting time in growth period of autumn.