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2020 Vol.65, Issue 4 Preview Page
Yield and Seed Quality Changes According to Delayed Harvest with Rainfall Treatment in Soybean (Glycine max L.)

강우처리 및 수확 지연에 따른 콩 종실 특성 및 수량성 변화

Inhye Lee1
Min-Jung Seo2
Myoung Ryoul Park3
Nam-Geol Kim3
Gibum Yi1
Yu-young Lee4
Mihyang Kim4
Byong Won Lee4
Hong-Tae Yun5*
이 인혜1
서 민정2
박 명렬3
김 남걸3
이 기범1
이 유영4
김 미향4
이 병원4
윤 홍태5*
1Post-doc Research Scientist, Central Area Crop Breeding Division, Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration
2Research Scientist, Planning and Coordination Division, National Institute of Crop Science, Rural Development Administration
3Research Scientist, Central Area Crop Breeding Division, Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration
4Research Scientist, Crop Post-harvest Technology Research Division, Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration
5Senior Research Scientist, Central Area Crop Breeding Division, Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration
1농촌진흥청 국립식량과학원 중부작물부 중부작물과 전문연구원
2농촌진흥청 국립식량과학원 기획조정과 농업연구사
3농촌진흥청 국립식량과학원 중부작물부 중부작물과 농업연구사
4농촌진흥청 국립식량과학원 중부작물부 수확후이용과 농업연구사
5농촌진흥청 국립식량과학원 중부작물부 중부작물과 농업연구관
*soy6887@korea.kr
December 2020. pp. 353-364
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Abstract

Recently in Korea, soybean harvesting has been delayed due to rainfall during the harvesting season, resulting in a reduction in yield and seed quality. This study was conducted to analyze the changes in yield and seed quality during delayed harvest with rainfall treatment using different harvesting methods, including field harvesting and polyethylene film covering after cutting fully-matured soybean plants (PE covering after cutting), with two major Korean soybean cultivars (Glycine max L), Pungsannamulkong and Daewonkong. The shattering rate of Pungsannamulkong, which is higher than that of Daewonkong, increased up to 41.8% when the harvest was delayed for 40 days without rainfall treatment by harvesting with PE covering after cutting. The weight of 100 seeds tended to decrease slightly as harvesting was delayed. When Daewonkong was harvested using the PE covering after cutting method with rainfall treatment, the yield decreased to the lowest level with a 0.8 kg ha-1 daily reduction rate. Pungsannamulkong showed the lowest yield when harvested using PE covering after cutting without rainfall treatment with a 3.4 kg ha-1 daily reduction rate. The infected seed rate increased according to the harvest delay in both cultivars, and significant differences were observed according to rainfall treatment and harvesting method. The germination rate was maintained above 95% even after 40 days of delayed harvest if there was no rainfall treatment. However, with rainfall treatment, the germination rate was significantly lowered as harvesting time was delayed. In the field harvesting with rainfall treatment, the germination rate decreased to 77.2% for Daewonkong and 76.5% for Pungsannamulkong after 40 days of harvest delay. For the 100-seed weight, effects of individual treatments and interactions between treatments were not observed. In contrast, the effect of interactions between treatments on the shattering rate was significant in both cultivars, indicating that the shattering rate had the greatest impact on the yield changes during delayed harvest.

Keywords
artificial rainfall
harvesting delay
seed quality
soybean
yield loss
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Information
  • Publisher :The Korean Society of Crop Science
  • Publisher(Ko) :한국작물학회
  • Journal Title :The Korean Journal of Crop Science
  • Journal Title(Ko) :한국작물학회지
  • Volume : 65
  • No :4
  • Pages :353-364
  • Received Date :2020. 09. 15
  • Revised Date :2020. 10. 14
  • Accepted Date : 2020. 10. 22
  • DOI :https://doi.org/10.7740/kjcs.2020.65.4.353
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