논문 ; 초지 경영 : 석회시용이 Orchardgrass ( Dactylis glomerata L . ) 및 Smooth bromegrass Bromus inermis Leyss . ) 의 생육 , 사초수량 및 일반조성분함량에 미치는 영향

The experiment was carried out to determine the effect of lime application rates (0, 4,000 and 8,000 kg/ha) on the growth, yield and chemical composition of Potomac orchard grass [Dactylisglomerafa L.] and Mancher smooth bromegrass [Bromus inermis Leyss.] at the forage field of Seoul National University, Suweon from September, 1983 to October, 1984. 1. The seedling growth and tillering of orchardgrass and smooth bromegrass were significantly improved (P $lt; 0.01) with increasing liming rates. 2. The dry matter yield of smooth bromegrass was significantly increased (P$lt;0.01) with increasing rates of lime application, but that of orchardgrass was not increased. 3. The growth of smooth bromegrass was depressed by weeds more than that of orchardgrass (P$lt;0.01). However, increasing lime application significantly reduced the weed development of smooth bromegrass plot (P$lt;0.01). 4. At the end of the experiment, no ground cover difference was found between no liming and liming plots of orchardgrass, but there was a great difference in ground cover between those of smooth bromegrass. 5. The crude protein, Ca, and P contents of both orchardgrass and smooth bromegrass were increased as Liming rates increased, while crude fiber content decreased. The average crude protein content of smooth bromegrass was 3.09% higher than that of orchardgrass. From the results of the experiment, it can be concluded that smooth bromegrass has a higher lime requirement than orchardgrass. Therefore, liming is primarily needed to establish smooth bromegrass successfully.