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Selection of Soybean Germplasm for Mixed Cropping with Corn on the Same Row to Produce Better Yield and Value-Added Forage
사료용 옥수수와 같은 줄에 혼작이 가능한 콩 유전자원 선발과 조사료 특성 검정
Korean J Breed Sci 2019;51(1):1-8
Published online March 1, 2019
© 2019 Korean Society of Breeding Science.

Jin-Dong Seo1, Minsu Kim1, Yowook Song1, Danim Jo1, Jong Tae Song1, Jong Duk Kim2, Chan Ho Kwon3, Hyun Jo1, and Jeong-Dong Lee1*
서진동1, 김민수1, 송요욱1, 조다님1, 송종태1, 김종덕2, 권찬호3, 조현1, 이정동1*

1School of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
2Division of Animal Husbandry, Yonam College, Cheonan 31005, Republic of Korea
3Department of Animal Science, Kyungpook National University, Sangju 37224, Republic of Korea
1경북대학교 농업생명과학대학 응용생명과학부, 2연암대학교 축산계열, 3경북대학교 생태환경대학 축산학과
Correspondence to: *(E-mail:, Tel: +82-53-950-5709, Fax: +82-53-958-6880)
Received January 15, 2019; Revised January 21, 2019; Accepted February 19, 2019.
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Soybean has a high protein content in both its hay and seed. Studies have shown that the mixed cropping of corn and soybean improved forage yield and quality. The objective of this study was to select soybean germplasm suitable for mixed cropping with corn on the same row to produce better forage yield and quality. Eleven soybean lines selected from previous evaluations were used in this study. Soybeans were planted with corn on the same row at 10 cm intervals. The planting rate in hills was one corn plant and three soybean plants. The fertilization and time of forage harvest were based on the recommendations for forage corn production. The results showed that in corn–soybean mixed cropping, the forage yield increased by about 19%, the silage protein content increased by 1%–2%, the percentage of acid detergent fibers and neutral detergent fibers decreased, the total digestible nutrients increased, and the acetic acid content decreased. Therefore, the selected soybean lines were suitable for mixed cropping with corn to produce high quality forage and/or as breeding material for the development of forage soybean varieties. Based on this study, we suggest that the agronomic traits of soybean needed for mixed cropping with corn on the same row for forage are as follows: soybean should 1) have the ability to grow well under the corn canopy, 2) have lodging tolerance for ease of mechanical forage harvest, 3) develop to the full pod stage at the time of harvest for increased protein content, and 4) have no adverse effects on corn growth to maintain a high forage yield.
Keywords : Soybean, Forage soybean, Forage yield and quality

March 2019, 51 (1)
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