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http://dx.doi.org/10.5333/KGFS.2012.32.3.275

Forage Productivity of Phragmites communis according to Harvest Management in Autumn  

Seo, Sung (National Institute of Animal Science, RDA)
Park, Jin-Gil (Ansan city)
Kim, Won-Ho (National Institute of Animal Science, RDA)
Kim, Meing-Jooung (National Institute of Animal Science, RDA)
Park, Hyung-Soo (National Institute of Animal Science, RDA)
Choi, Ki-Choon (National Institute of Animal Science, RDA)
Sung, Ha-Guyn (Adbiotech)
Lee, Joung-Kyong (The Foundation of AG, Tech. Commercialization and Transfer)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.32, no.3, 2012 , pp. 275-284 More about this Journal
Abstract
This study was carried out to determine the harvest management during autumn on the forage production, quality and regrowth of following year of Phragmites communis as native grass. Field experiments were conducted in Ansan and in Cheonan from 2010 to 2011. Forages were cut at 3 cm, 15 cm and 25 cm in height as compared to control (no harvest) in Ansan plots, and forages grown in Cheonan plots were cut at 10 cm and 20 cm in height with control (no harvest). The forages were harvested one time on Oct 7, 2011 in Ansan, and were harvested twice on July 7 and on October 7 in Cheonan. In Ansan, dry matter (DM) yield of control plot the following year were higher than those from harvested plots. In vitro digestible DM (IVDDM) yields, however, were the same: 1,236 kg/ha from control, 1,234 kg from 15 cm cut and 1,241 kg from 25 cm cut plots, except that lower IVDDM yield from 3 cm cut plot than these were observed. Forage quality of control plot was poorer than those of harvested ones. In vitro DM digestibility (IVDMD) and relative feed value (RFV) of control were 39.98% and 65.3, respectively as compared to harvested plots (42.36~46.40% IVDMD and 67.8~72.5 RFV). Yield and quality from Cheonan plots were similar to those from Ansan plots. Annual yield in DM and in CP from control plot were a little higher than those from harvested plots. However, there were no difference found in IVDDM yield between 20 cm cut (5,354 kg/ha) and control (5,178 kg). But IVDDM of 10 cm cut forages was less (4,531 kg). Forage quality scores were better from 20 cm cut, and 10 cm cut plot than control, in order (p<0.05). The quality grades were the 5th and 6th for forages from harvested plots and control plot, respectively. Regrown Phragmites communis from all Cheonan plots ranked the 4th in forage quality. More than 70% of annual yield was observed from the first grown forages. One time harvest per year was desirable for following regrowth and long time stable production of Phragmites communis. We recommended that Phragmites communis be harvested once for more forage yield with higher quality, and that optimum cutting height is 15~20 cm.
Keywords
Reed; Native grass; Cutting height; Harvest time; Regrowth; Quality;
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