• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.199-199
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• 2017

This study investigated the aspects of damage due to low temperature treatment in order to establish the damage criterion according to low temperature invasion during regeneration period in wheat after regeneration period in the early spring. We cultivated wheat cultivar 'Geumgang' in Wagner pots and treated them with three types of low temperature, and the gradual temperature change program was set in a low temperature incubator for 12.5 h per day for 5 days during the night time when the length of young spikes was about 1 mm. All treatments except for the control were treated in 5 steps for each temperature. Treatment 1 was treated at the lowest temperature $-5^{\circ}C$ for 5 h, treatment 2 for 7 h at $-5^{\circ}C$, and treatment 3 for 9 h at $-5^{\circ}C$. The most common type of damage was partial infertility, and there were some discolored spikes. The damage rate of wheat spikes treated at $-5^{\circ}C$ for 9 h was the highest, while the damage rates of wheat sprouts treated at 5h and 7h were not different from each other. It was found that the damage of wheat spikes exposed to low temperatures for a long time was large. It is necessary to investigate the aspects of spike damage by duration days of low temperature.

• 한국농공학회논문집
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• 제62권2호
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• pp.1-15
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• 2020

In this study, the characteristics of crop damage area by flooding for 113 middle range watersheds during 2000-2016 were analyzed and future crop damage area by flooding were analyzed using 13 GCM outputs such as hourly maximum rainfall, 10-min maximum rainfall, number of days of 80 mm/day, daily rainfall maximum, annual rainfall amount associated with RCP 4.5 and RCP 8.5 scenarios and watershed characteristic data such as DEM, urbanization ratio, population density, asset density, road improvement ratio, river improvement ratio, drainage system improvement ratio, pumping capacity, detention basin capacity, and crop damage area by flooding. A constrained multiple linear regression model was used to construct the relationships between the crop damage area by flooding and other variables. Future flood index related to crop damage may mainly increase in the Mankyung watershed, Southwest part of Youngsan and Sumjin river basin and Southern part of Nackdong river basin. Results are useful to identify watersheds which need to establish strategies for responding to future flood damage.

• 한국작물학회:학술대회논문집
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• 한국작물학회 1989년도 춘계 학술대회지
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• pp.16-16
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• 1989

• 한국작물학회지
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• 제66권3호
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• pp.183-189
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• 2021

볍씨 종자의 최아정도 및 최아 손상정도에 따른 출현율 및 초기생육변화를 분석한 결과는 다음과 같다. 1. 볍씨 최아 길이가 길수록 출현율은 다소 감소하였으며 생육온도가 18℃ 이상으로 높을수록 차이가 큰 것으로 나타났다. 2. 최아 길이가 길수록 초장신장 속도가 감소하였으며 생육온도가 21℃ 이상으로 높을 시 최아길이 3 mm에서 초장이 크게 감소하였다. 3. 최아길이에 따른 엽수변화는 없었으나 줄기 두께 및 줄기 건물중, 뿌리 건물중은 최아길이가 길수록 유의하게 감소하였다. 4. 최아 손상정도가 증가할수록 출현율은 유의하게 감소하였으며 생육온도가 높을수록 감소폭은 증가하으며 엽수변화는 없었으나 줄기 두께 및 줄기 건물중, 뿌리 건물중은 최아 손상도가 길수록 유의하게 감소하였다. 최아 길이 및 종자 손상정도별 뿌리 건물중과 줄기 건물 중 변화는 유의한 정의 상관관계를 보였다.

• 한국토양비료학회지
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• 제50권1호
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• pp.1-11
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• 2017

In order to assess risk of high temperature damages about corn during reproduction stages in the future, we carried out analysis of climate change scenarios RCP (Representative Concentration Pathway) 4.5 and RCP8.5 distributed by KMA (Korea Meteorological Administration) in 2012. We established two indexes such as average of annual risk days of high temperature damage which express frequency and strengthen index of high temperature damage. As results of producing maps for 157 cities and counties about average of annual risk days of high temperature damage during total periods of scenarios, the risk of high temperature in RCP8.5 was evaluated to increase at all over nation except inland area of Gangwon province, while RCP4.5 showed similar to present, or little higher. The maps of annual risk days of high temperature damage with 10 years interval in RCP8.5 prospected that the risk for damaging corn growth would increase rapidly from 2030's. The largest risk of high temperature damage in the future of RCP8.5 was analyzed at Changnyeong county located east-south inland area in Kyeongnam province, while the smallest of risk counties were Pyeongchang, Taebaek, Inje, and Jeongseon. The prospect at 12 counties which is large to produce corn at present and contains large plains have been showed that there will be only a little increase of risk of high temperature at Goesan, Yangpyeong, Hongcheon, Seosan, and Mooju until 2060's. But considering strengthen index of high temperature damage, most regions analyzed would be prospected to increase rapidly after 2030's. To cope with high temperature damage of corn in the future, we should develop various practical technologies including breeding adapted varieties and controlling cultivation periods.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.149-149
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• 2022

As the average temperature rises due to climate change, damage to caused by rising temperatures is spreading all over the world. If soybeans are exposed to high temperature during the reproductive stage, pod setting rate and seed weight is reduced, therefore, various studies are needed to prevent crop damage due to high temperature. This study is to research the effect of high temperature on yield decrease during the grow stage of soybean.

• 한국육종학회지
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• 제41권4호
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• pp.488-495
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• 2009

자연발생포장 및 톱다리개미허리노린재 접종구에서 협 피해 및 수량 감소가 적었던 품종은 풍산나물콩, 소백나물콩, 두유콩, 신팔달콩 2호로 다른 품종에 비해 노린재 선호도가 낮은 품종으로 생각되었고, 명주나물콩, 만리콩, 황금콩은 피해가 심한 품종으로 분류되었다. 콩 품종간 톱다리개미허리노린재 선호성으로 모용색이 회백색인 품종군의 피해율이 13.0%인데 비해 갈색모용의 품종군은 8.2%로 피해율이 낮았으며, 제색도 황색에 비해 담갈색>갈색>회갈색 순으로 제색이 짙은 품종군에서 피해율이 낮은 경향이었고, 협색도 담갈색에 비해 갈색에서 피해가 적어, 모용색, 협색, 제색이 노린재 저항성에 관여하는 형질로 생각되었다. 품종별 R6(입비대성기) 단계의 협 길이가 짧은 품종군이 긴 품종군에 비해 피해율이 낮아, 협의 길이도 노린재 저항성에 관여하는 형질로 생각되었다.

• 한국작물학회지
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• 제27권4호
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• pp.411-434
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• 1982

Yield loss of wheat and barley due to meteorological constraints has been analyzed in order to get the basic information, which will lead to the counter-measures for dissemination of agricultural technology and administration. These meteorological damages were analyzed on the results of percentage yield loss and mechanism of damage and the aspects of constraints were explained. The annual yield loss of wheat and barley were 21.7% by meteorological stress: Cold damage, 5.9% ; excessive soil moisture, 5.6% ; lodging, 2.9% ; drought, 3.0% ; disease, 4.3% etc. Those damages by the stresses mentioned above and rain damage were analyzed in relation to the growth stages and the degrees of damage. The predispositions and the growth of wheat and barley to those meteorological stress are also discussed. Varietal resistances of wheat and barley to those stresses were indexed and the physiological and morphological characteristics of these resistant cultivars are described. Cultural practices to minimize the damages were also reviewed.

• 한국작물학회지
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• 제36권5호
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• pp.445-458
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• 1991

유지작물의 안전 생산과 품질향상을 위해 지금까지 유지작물에 발생되는 주요 기상재해에 대한 국내외 문헌을 종합 고찰하였다 유지작물에 발생되는 주요 기상재해는 타작물에서와 같이 냉해나 한해와 같은 온도에 의한 장해, 습해나 도복과 같은 풍수해, 그리고 기타재해 등 각종 재해가 발생되고 있는 것으로 보고되있다. 그러나 유지작물은 국내외를 막론하고 주요작물에 비해 비중이 낮고 재배면적도 적어 비중이 낮게 취급된 관계로 각종 재해에 대한 정확한 피해정도나 재해경감 대책이 밝혀지지 많은 부분이 많은 것으로 고찰되었다. 지금까지 조사 보고된 결과들 중에서는 참깨와 땅콩에 대한 결과들이 많고 그 중에서도 침관수해, 한충해, 도복피해 등 풍수해에 대한 연구결과가 많으며 이 같은 재해들은 피해정도도 매우 큰 것으로 보고되어 심한 경우는 90%이상의 수량감소를 초래하는 것으로 보고하였다. 이와 같은 재해에 대한 피서를 최소화하기 위해서는 우선 품종개량 면에서 각종 재해에 대한 내성을 가진 품종이 개발되어야 할 것이며, 재배기술적인 측면에서도 재해를 분산시킬 수 있는 방법이나 비닐멀칭재배법 등과 같이 기상재해의 사전예방 기술도 적용되어야 할 것으로 고찰되었다. 그러나 최근의 농산물유입 개방화에 따른 다품목 소량재배 추세와 다양한 식품의 안정적 생산공급 측면에서 점차 비중이 높아가고 있는 유서 작물의 안전생산과 품질향상을 위해서는 품종개량과 재배기술 면에서 보다 적극적인 기상재해 경감대책 연구와 노력이 필요한 것으로 전망되었다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 1991년도 추계 학술대회지
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• pp.20-21
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• 1991