Growth Characteristics and Yield Comparisons of Domestic and Foreign Italian ryegrass (Lolium multiflorum Lam) Varieties in Yecheon area of Korea

Kim, Ki-Yong; Lee, Sanghoon; Ji, Hee Chung; Hwang, Tae-Young; Lee, Ki-Won; Park, Sung Min

doi:10.5333/kgfs.2015.35.1.43

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…Therefore, climate is the most important factor, but other factors in the severe cold below zero also affected the yield difference. Furthermore, the development and selection of new varieties have been intensively performed to expand to the central and northern regions of Korea [ 29 ]. Between normal and severe cold events in winter, the difference in MT was 1.05°C in the central inland region and 1.97°C in the southern inland region.…”

Section: Discussionmentioning

confidence: 99%

Impact of abnormal climate events on the production of Italian ryegrass as a season in Korea

Kim¹,

Sung²

2021

J Anim Sci Technol

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This study aimed to assess the impact of abnormal climate events on the production of Italian ryegrass (IRG), such as autumn low-temperature, severe winter cold and spring droughts in the central inland, southern inland and southern coastal regions. Seasonal climatic variables, including temperature, precipitation, wind speed, relative humidity, and sunshine duration, were used to set the abnormal climate events using principal component analysis, and the abnormal climate events were distinguished from normal using Euclidean-distance cluster analysis. Furthermore, to estimate the impact caused by abnormal climate events, the dry matter yield (DMY) of IRG between abnormal and normal climate events was compared using a t -test with 5% significance level. As a result, the impact to the DMY of IRG by abnormal climate events in the central inland of Korea was significantly large in order of severe winter cold, spring drought, and autumn low-temperature. In the southern inland regions, severe winter cold was also the most serious abnormal event. These results indicate that the severe cold is critical to IRG in inland regions. Meanwhile, in the southern coastal regions, where severe cold weather is rare, the spring drought was the most serious abnormal climate event. In particular, since 2005, the frequency of spring droughts has tended to increase. In consideration of the trend and frequency of spring drought events, it is likely that drought becomes a NEW NORMAL during spring in Korea. This study was carried out to assess the impact of seasonal abnormal climate events on the DMY of IRG, and it can be helpful to make a guideline for its vulnerability.

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Section: Discussionmentioning

confidence: 99%

Impact of abnormal climate events on the production of Italian ryegrass as a season in Korea

Kim¹,

Sung²

2021

J Anim Sci Technol

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“…In Republic of Korea, a country that depends on foreign sources for its supply of forage crops, the projected decline in forage crop productivity is expected to exacerbate the impact of climate change on the domestic livestock industry [8]. Due to climate change, the temperature in Republic of Korea has risen by 1.5 °C, much higher than the global average rise over the past 100 years, changing the suitable cultivation limit for crops [9][10][11][12]. This means that the cultivation area for grasses and Due to climate change, the temperature in Republic of Korea has risen by 1.5 • C, much higher than the global average rise over the past 100 years, changing the suitable cultivation limit for crops [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Due to climate change, the temperature in Republic of Korea has risen by 1.5 °C, much higher than the global average rise over the past 100 years, changing the suitable cultivation limit for crops [9][10][11][12]. This means that the cultivation area for grasses and Due to climate change, the temperature in Republic of Korea has risen by 1.5 • C, much higher than the global average rise over the past 100 years, changing the suitable cultivation limit for crops [9][10][11][12]. This means that the cultivation area for grasses and forage crops is moving north from the southern region to the central region due to rising temperatures.…”

Section: Introductionmentioning

confidence: 99%

A Study on Analyses of the Production Data of Feed Crops and Vulnerability to Climate Impacts According to Climate Change in Republic of Korea

Shin,

Hwang,

Kim

et al. 2023

Applied Sciences

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According to the climate change scenario, climate change in the Korean Peninsula is expected to worsen due to extreme temperatures, with effects such as rising average temperatures, heat waves, and droughts. In Republic of Korea, which relies on foreign countries for the supply of forage crops, a decrease in the productivity of forage crops is expected to cause increased damage to the domestic livestock industry. In this paper, to solve the issue of climate vulnerability for forage crops, we performed a study to predict the productivity of forage crops in relation to climate change. We surveyed and compiled not only forage crop production data from various regions, but also experimental cultivation production data over several years from reports of the Korea Institute of Animal Science and Technology. Then, we crawled related climate data from the Korea Meteorological Administration. Therefore, we were able to construct a basic database for forage crop production data and related climate data. Using the database, a production prediction model was implemented, applying a multivariate regression analysis and deep learning regression. The key factors were determined as a result of analyzing the changes in forage crop production due to climate change. Using the prediction model, it could be possible to forecast the shifting locations of suitable cultivation areas. As a result of our study, we were able to construct electromagnetic climate maps for forage crops in Republic of Korea. It can be used to present region-specific agricultural insights and guidelines for cultivation technology for forage crops against climate change.

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“…또한, 간척지 조건에서 이 탈리안 라이그라스가 출현율이 총체보리 및 기타 동계 사료작물에 비해 높고, 염과 습해에 견디는 능력이 더 강하다는 연구결과가 있다 (Kim et al, 1993;Shin et al, 2007). 그러나 국내개발 품종들의 사료생산 및 사료가치와 관련된 논 문들은 다수 연구되고 있지만 (Seo et al, 2011;Kim et al, 2015;Kim et al, 2016)…”

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“…생육 특성 분산분석 결과 토양염농도와 품종간의 상호관계 유의성은 없었지만 염농도에서는 단위면적당 개체 수, 간장, 단위면적당 이삭수, 천립중, 종자수량에 대한 유의성은 있었으며 품종간 비교에서는 천립중에 대한 통계적 유의성이 있었으며 다른 수량구성요소에 대한 차이는 없었다 (Table3). 천안지역에서 그린팜과 코윈어리 출수기 차이가 일주일정도 나는 결과에 비해 상이했다(Kim et al, 2015;Kim et al, 2016). 출수반응은 온도에 영향을 많이 받는데 새만금지역이 상대적으로 온난한 해안지역이기 때문에 그 영향 을 받아 품종간 차이가 천안, 예천 지역에 비해 상대적으로 줄었을 것으로 보인다.간장은 토양 염농도 0.1%이하 구에서는 92.3 cm, 0.2 -0.3%에서는 77.7 cm로 14.6 cm의 차이를 보여 염농도에 따 른 유의미한 차이를 보였다.…”

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Growth Characteristics and Seed Productivity of Italian Ryegrass (Lolium multiflorum L.) Cultivars under Different Salinity in Saemangeum Reclaimed Tideland

Jang¹,

Bae²,

Ahn³

et al. 2020

Korean J. Soil. Sci. Fert.

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Although the forage production area of Italian ryegrass is expanding in Korea, most of the seeds are imported from abroad. This study was conducted to examine seed productivity of domestic varieties of Italian ryegrass under different soil salinity in reclaimed tideland. Compared to 0.1% of soil salinity, the emergence rate at 0.2 -0.3% salinity decreased by 7%. The number of ear and grain weight also decreased at the 0.2 -0.3% of salinity, eventually leading to 23% decreases in seed yield compared to the 0.1% salinity. There was no significant difference in yield components among cultivars, but Greenfarm showed slightly higher yield components than other cultivars. Therefore, when domestic cultivars are harvested in reclaimed land, it is expected to increase the self-sufficiency of domestic seeds and to replace imports of foreign seeds.

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Growth Characteristics and Yield Comparisons of Domestic and Foreign Italian ryegrass (Lolium multiflorum Lam) Varieties in Yecheon area of Korea

Cited by 5 publications

References 9 publications

Impact of abnormal climate events on the production of Italian ryegrass as a season in Korea

Impact of abnormal climate events on the production of Italian ryegrass as a season in Korea

A Study on Analyses of the Production Data of Feed Crops and Vulnerability to Climate Impacts According to Climate Change in Republic of Korea

Growth Characteristics and Seed Productivity of Italian Ryegrass (Lolium multiflorum L.) Cultivars under Different Salinity in Saemangeum Reclaimed Tideland

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