Changes of the Yield and Carbohydrate Content during the Regrowth of the Pastuer plants - Especially Ladno clover and Orchardgrass-

재생기간별 목초의 수량 및 탄수화물함량 변화 - Ladino Clover와 Orchardgrass를 중심으로 -

The experiment were carried out to determine the rate of regrowth, the changes of carbohydrates contained in the samples right after cutting, plant part for storage of carbohydtates and top-dressing time of ladino clover and orchardgrass. Plants were grown in the simple growth chamber as well as in the fields. The temperature, light intensity and light period were controlled to be 15-20$^{\circ}$, 4,250 Lux, and 15 hours in the simple growth chamber. The results obtained are as follows ; 1. The period of recovery to initial stands after cutting was about 3 weeks in ladino clover and 4-5 weeks in orchard grass in terms of dry matter and carbohydrates. 2. The content of total water-soluble carbohydrates of plant parts was the hightest in stolon of ladino clover and in sheath of orchardgrass, and the lowest in roots of ladino clover and orchardgrass. 3. Cutting resulted in a temporary decrease of total water-soluble carbohydrates in the shoots. Similar trends were observed when the plants were left intact with top-dressing. 4. The top-dressing applied simultalliousely with the cutting was more effective to stimu1ate regrowth than that applied after cutting, however, both of the simultaneous and after cutting application were still better than application prior to cutting.