Establishment of Economic Threshold by Evaluation of Yield Component and Yield Damages Caused by Leaf Spot Disease of Soybean
This study was carried out to investigate yield loss due to soybean leaf spot disease caused by Cercospora sojina Hara and to determine the economic threshold level. The investigations revealed highly significant correlations between disease severity (diseased leaf area) and yield components (pod...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Hanrimwon Publishing Company
2013-09-01
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| Series: | Research in Plant Disease |
| Subjects: | |
| Online Access: | http://www.online-rpd.org/journal/view.html?uid=720&sort=book_Seq&scale=&key=year&keyword=&s_v=19&s_n=3&pn=vol&year=2013&vmd=Full |
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| author | Hongsik Shim Jong-Hyeong Lee Yong-Hwan Lee Inn-Shik Myung Hyo-Won Choi |
| author_facet | Hongsik Shim Jong-Hyeong Lee Yong-Hwan Lee Inn-Shik Myung Hyo-Won Choi |
| author_sort | Hongsik Shim |
| collection | DOAJ |
| description | This study was carried out to investigate yield loss due to soybean leaf spot disease caused by Cercospora
sojina Hara and to determine the economic threshold level. The investigations revealed highly significant
correlations between disease severity (diseased leaf area) and yield components (pod number per plant, total
grain number per plant, total grain weight per plant, percent of ripened grain, weight of hundred seed, and
yield). The correlation coefficients between leaf spot severity and each component were −0.90, −0.90, −0.92,
−0.99, −0.90 and −0.94, respectively. The yield was inversely proportional to the diseased leaf area increased.
The regression equation, yield prediction model, between disease severity (x) and yield (y) was obtained as
y = −3.7213x + 354.99 (R2 = 0.9047). Based on the yield prediction model, economic injury level and economic
threshold level could be set as 3.3% and 2.6% of diseased leaf area of soybean. |
| first_indexed | 2024-12-12T14:42:04Z |
| format | Article |
| id | doaj.art-5f1175788f63457bbbaef1f65cbb7386 |
| institution | Directory Open Access Journal |
| issn | 1598-2262 2233-9191 |
| language | English |
| last_indexed | 2024-12-12T14:42:04Z |
| publishDate | 2013-09-01 |
| publisher | Hanrimwon Publishing Company |
| record_format | Article |
| series | Research in Plant Disease |
| spelling | doaj.art-5f1175788f63457bbbaef1f65cbb73862022-12-22T00:21:12ZengHanrimwon Publishing CompanyResearch in Plant Disease1598-22622233-91912013-09-01193196200http://dx.doi.org/10.5423/RPD.2013.19.3.196Establishment of Economic Threshold by Evaluation of Yield Component and Yield Damages Caused by Leaf Spot Disease of SoybeanHongsik Shim0Jong-Hyeong Lee1Yong-Hwan Lee2Inn-Shik Myung3Hyo-Won Choi4National Academy of Agricultural Science, Suwon 441-707, KoreaGyeonggi Province Agricultural Research and Extension Services, Hwasung 445-784, KoreaRural Development Administration, Suwon 441-707, KoreaNational Academy of Agricultural Science, Suwon 441-707, KoreaNational Academy of Agricultural Science, Suwon 441-707, KoreaThis study was carried out to investigate yield loss due to soybean leaf spot disease caused by Cercospora sojina Hara and to determine the economic threshold level. The investigations revealed highly significant correlations between disease severity (diseased leaf area) and yield components (pod number per plant, total grain number per plant, total grain weight per plant, percent of ripened grain, weight of hundred seed, and yield). The correlation coefficients between leaf spot severity and each component were −0.90, −0.90, −0.92, −0.99, −0.90 and −0.94, respectively. The yield was inversely proportional to the diseased leaf area increased. The regression equation, yield prediction model, between disease severity (x) and yield (y) was obtained as y = −3.7213x + 354.99 (R2 = 0.9047). Based on the yield prediction model, economic injury level and economic threshold level could be set as 3.3% and 2.6% of diseased leaf area of soybean.http://www.online-rpd.org/journal/view.html?uid=720&sort=book_Seq&scale=&key=year&keyword=&s_v=19&s_n=3&pn=vol&year=2013&vmd=Full: Leaf spotSoybeanThreshold level |
| spellingShingle | Hongsik Shim Jong-Hyeong Lee Yong-Hwan Lee Inn-Shik Myung Hyo-Won Choi Establishment of Economic Threshold by Evaluation of Yield Component and Yield Damages Caused by Leaf Spot Disease of Soybean Research in Plant Disease : Leaf spot Soybean Threshold level |
| title | Establishment of Economic Threshold by Evaluation of Yield Component and Yield Damages Caused by Leaf Spot Disease of Soybean |
| title_full | Establishment of Economic Threshold by Evaluation of Yield Component and Yield Damages Caused by Leaf Spot Disease of Soybean |
| title_fullStr | Establishment of Economic Threshold by Evaluation of Yield Component and Yield Damages Caused by Leaf Spot Disease of Soybean |
| title_full_unstemmed | Establishment of Economic Threshold by Evaluation of Yield Component and Yield Damages Caused by Leaf Spot Disease of Soybean |
| title_short | Establishment of Economic Threshold by Evaluation of Yield Component and Yield Damages Caused by Leaf Spot Disease of Soybean |
| title_sort | establishment of economic threshold by evaluation of yield component and yield damages caused by leaf spot disease of soybean |
| topic | : Leaf spot Soybean Threshold level |
| url | http://www.online-rpd.org/journal/view.html?uid=720&sort=book_Seq&scale=&key=year&keyword=&s_v=19&s_n=3&pn=vol&year=2013&vmd=Full |
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