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http://dx.doi.org/10.5333/KGFS.2006.26.2.097

Forage Yield and Quality in Rye Cultivars with Different Harvesting Dates  

Kim Su-Gon (Cheonan Yonam College)
Kim Jong-Duk (Cheonan Yonam College)
Kwon Chan-Ho (Cheonan Yonam College)
Ha Jong-Kyu (Seoul National University)
Kim Dong-Am (Seoul National University)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.26, no.2, 2006 , pp. 97-104 More about this Journal
Abstract
This experiment was carried out to determine the effect of harvesting date on the forage yield and quality of different rye (Secale cereale L.) cultivars. The experiment was conducted in split plot design with three replications. The main plots consisted of two harvesting dates 20th and 30th April. The subplots consisted of five rye cultivars from different maturity groups such as 'Kodiak (Late)'. 'Koolgrazer (Early)', 'Danko (Late)', 'Homil22 (Medium)' and 'Olhomil (Early)' Dry matter (DM) contents of 17.8% at early harvesting were lower 2.2% than at late harvesting. But crude protein (CP) of 18.9% and total digestible nutrients (TDN) contents of 65.5% at early harvesting were higher 2.3% and 3.0% than those at late harvesting, respectively. There were significant differences in DM, CP and TDN contents among the rye cultivars tested (p<0.05). The contents of fiber components at early harvesting were lower than those at late harvesting. The acid detergent fiber (ADF), neutral detergent fiber (NDF), cellulose and acid detergent lignin (ADL) contents at early harvesting were lower than those at late harvesting, and hemicellulose contents at early harvesting was higher than that at late harvesting. The fiber component of early maturing cultivars such as 'Koolgrazer' and 'Olhomil' were higher than those of the others. Dry matter, CP, in vitro digestible dry matter (IVDDM) and TDN yields at early harvesting were lower than those at late harvesting, and the yield of early maturing cultivars were higher than those of the others. In this study, the results of this study indicate that forage production technology in combination with early maturing rye cultivar and late harvesting could enhance both production and quality of rye.
Keywords
Early harvesting; Late harvesting; Forage production technique;
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