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http://dx.doi.org/10.5333/KGFS.2017.37.4.254

Agronomic Characteristics of Sorghum × Sudangrass Hybrids 'Cadan 99B' and 'Sweet Sioux WMR' in Middle and Southern Region of Korea  

Hwang, Tae-Young (National Institute of Animal Science, RDA)
Ji, Hee Chung (National Institute of Animal Science, RDA)
Kim, Ki Yong (National Institute of Animal Science, RDA)
Lee, Sang-Hoon (National Institute of Animal Science, RDA)
Lee, Ki-Won (National Institute of Animal Science, RDA)
Kim, Ki-Su (Jeollanam-do, Agricultural Research and Extension Services, Live Stock Research Center)
Choi, Gi Jun (National Institute of Animal Science, RDA)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.37, no.4, 2017 , pp. 254-263 More about this Journal
Abstract
This study was carried out to introduce of agronomic characteristics, forage yields and quality of Sorghum ${\times}$ Sudangrass hybrids 'Cadan 99B' and 'Sweet Sioux WMR' from 2015 to 2016 in middle and southern regions of Korea. The field experiment design was complete in seven varieties with three repetitions. Sorghum ${\times}$ Sudangrass hybrids were sown on mid-May in middle region, and end-May in southern region of Korea, in 2015 and 2016. The observed average heading date of Cadan 99B and Sweet Sioux WMR were July 22. The heading dates of Cadan 99B and Sweet Sioux WMR were 8 days earlier than SX-17 and 5 days earlier than brown mid-rid (BMR) Revolution. The sugar contents of Cadan 99B and Sweet Sioux WMR were 6.5 and $6.9Brix^{\circ}$, respectively. Comparison with BMR variety, the sugar contents of Candan 99B and Sweet Sioux WMR were 0.2 and $0.6Brix^{\circ}$ higher than Revolution, respectively. The average of dry matter (DM) yield for 2 years and 2 regions of Cadan 99B (24,587kg/ha) were the highest among the seven varieties, but there was no significant difference among other varieties except headless control variety Jumbo (19,119kg/ha) and LATTE (20,778kg/ha) (p>0.05). The crude protein (CP) and in vitro dry matter digestibility (IVDMD) of Cadan 99B were 7.5% and 60.2%, and Sweet Sioux WMR were 6.9% and 60.7%, respectively. The results of this study indicated that Sorghum ${\times}$ Sudangrass hybrids Cadan 99B and Sweet Sioux WMR are earlier heading dates and higher than SX-17, and high yields of DM in middle and southern regions of Korea.
Keywords
Cadan 99B; Sweet Sioux WMR; Sorghum ${\times}$ Sudangrass hybrids; Agronomic characteristics;
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