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http://dx.doi.org/10.5333/KGFS.2019.39.1.17

Growth Characteristic and Productivity of Forage Corn Varieties Sown at the Last Ten Days of May in Central Region of Korea  

Choi, Gi Jun (National Institute of Animal Science, RDA)
Jung, Jeong Sung (National Institute of Animal Science, RDA)
Choi, Ki Choon (National Institute of Animal Science, RDA)
Hwang, Tae Young (Rural Development Administration)
Kim, Ji Hye (National Institute of Animal Science, RDA)
Kim, Won Ho (National Institute of Animal Science, RDA)
Lee, Eun Ja (National Institute of Animal Science, RDA)
Sung, Kyung Il (Dept. of Animal Life Science, Kangwon National University)
Lee, Ki-Won (National Institute of Animal Science, RDA)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.39, no.1, 2019 , pp. 17-23 More about this Journal
Abstract
This experiment was carried out to evaluate the characteristic and productivity of forage corn varieties sown at the last ten days of May at Cheonan of Korea on 2017 and 2018. Forage corn varieties sown on 24th May 2017 and $25^{th}$ May 2018 were emerged in 5th and 1st June, respectively. Silking date of forage corns was different among varieties(p<0.05). Stem length of forage corns was not different among the varieties, except Kwangpyeongok(KPA) and Nero IT. Stem diameter of forage corns was not different amaong the varieties. Outbreak rate of black streaked dwarf virus was lower than 3% in all varieties. Total digestible nutrient(TDN) yield was different among corn varieties(p<0.05), which was higher in P32P75, followed by P2088, P31N27, and KPA. The TDN yield of varieties had direct correlation with stem length, stem diameter and ear yield, respectively(p<0.01). Average of TDN in all varieties was 69.8%. These results suggested that forage corn variety with late-seeding adaptability is more important for increasing the productivity of forage corn If harvesting of winter forage crops have to be finished in the middle ten days of May in middle region of Korea.
Keywords
Forage corn; Late-seeding adaptability; Variety; Forage productivity;
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