전년도 생육 억새의 늦은 수확이 당년 생육특성과 수량에 미치는 영향

Youn-Ho Moon; Ji-Eun Lee; Gyeong-Dan Yu; Young-Lok Cha; Gi Hong An; Joung Woong Ahn; Yeon-Sang Song; Kyeong-Bo Lee

doi:10.7740/kjcs.2016.61.3.215

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2016 Vol.61, Issue 3 Preview Page Next Page

Original Research Article

전년도 생육 억새의 늦은 수확이 당년 생육특성과 수량에 미치는 영향 Effects of Delayed Harvesting of Miscanthus spp. Risen in the Previous Year on its Current Year’S Yield and Growth Characteristics

30 September 2016. pp. 215-221

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Abstract

This study examined the effects of delayed harvest of Miscanthus on its biomass yield and growth characteristics. The trial was conducted at a 5-year-old demonstration field, using Miscanthus sacchariflorus cv. Geodae 1 and Miscanthus × giganteus. Harvesting was carried out using a mower, baler, and bale picker driven by a 5-ton tractor. Harvesting dates were the 1 ^st , 10^th , and 17^th of April, which respectively corresponded with the first, mid, and last emerging dates of new shoots. The sequential changes in stem number due to delayed harvesting were investigated on April 29^th , May 27^th , July 22^nd , and October 30^th , which corresponded to the juvenile, mid, luxuriant, and senescence stem stages, respectively. Soil penetration resistance, biomass yield, and growth characteristics were investigated on October 30^th . There was no difference in soil penetration resistance at a depth of 10 cm, but it increased at a depth of 20 cm in proportion to the delayed harvesting time. The sequential change in stem number due to delayed harvesting was greater in M. sacchariflorus cv. Geodae 1 than in M. × giganteus. In M. sacchariflorus cv. Geodae 1, which was harvested on the last emerging date of new shoots, the stem number was 169/m ² in the mid stage but decreased to 70/m ² in the luxuriant stage. The diameter of newly developed rhizomes, stem height, and biomass yield decreased in the two Miscanthus species due to delayed harvesting. The ratio of Miscanthus headings, which is a critical characteristic for landscape use, also decreased due to delayed harvesting. Heading of M. sacchariflorus cv. Geodae 1 was not observed in plots harvested on the mid and last emerging dates of new shoots.

Keywords

delayed harvesting

growth characteristics

Miscanthus

yield

References

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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 : 61
No :3
Pages :215-221
Received Date : 2016-03-04
Revised Date : 2016-08-04
Accepted Date : 2016-08-04
DOI :https://doi.org/10.7740/kjcs.2016.61.3.215

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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