Effect of liming on the growth, forage yield and chemical composition of orchardgrass (Dactylis glomerata L.) and smooth bromegrass (Bromus inermis Leyss.)
1988
Kim, D.A. (Seoul National Univ., Suwon (Korea R.). Coll. of Agriculture) | Song, S.T. (Rural Development Administration, Cheju (Korea R.). Cheju Experiment Station) | Lee, S.C. (Chonju Woosuk Coll., Chonju (Korea R.))
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 [Dactylis glomerata L.] and Mancher smooth bromegrass [Bromus inermis Leyss.] at the forage field of Seoul National Univ., Suwon from September, 1983 to October, 1984. The seedling growth and tillering of orchardgrass and smooth bromegrass significantly improved (P0.01) with increasing liming rates. The dry matter yield of smooth bromegrass significantly increased (P0.01) with increasing rates of lime application, but that of orchardgrass did not increase. The growth of smooth bromegrass was depressed by weeds more than that of orchardgrass (P0.01). However, increasing lime application significantly reduced the weed development of smooth bromegrass plot (P0.01). 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. The crude protein, Ca, and P contents of both orchardgrass and smooth bromegrass 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
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