• Proceedings of the Korean Society of Crop Science Conference
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• 2017.10a
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• pp.303-303
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• 2017

• Proceedings of the Korean Society of Crop Science Conference
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• 2018.04a
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• pp.186-186
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• 2018

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2005.05a
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• pp.96-96
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• 2005

• Proceedings of the Korean Society of Crop Science Conference
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• 2019.04a
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• pp.176-176
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• 2019

• Proceedings of the Korean Society of Crop Science Conference
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• 2020.06a
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• pp.16-16
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• 2020

• Proceedings of the Korean Society of Crop Science Conference
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• 2023.04a
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• pp.160-160
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• 2023

• Korean Journal of Soil Science and Fertilizer
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• v.49 no.2
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• pp.157-167
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• 2016

The interspecific estimation for tolerance capacities of upland crop species to excessive soil water stress in paddy field is significant in agricultural practices. Most of upland crops can be damaged by either excessive soil water or capillary rise of the water table during rainy season in paddy fields. The major objective of this study was to evaluate water stress of upland crops under different drainage classes in converted paddy field. This experiment was carried out in poorly drained soil (PDS) and imperfectly drained soil (IDS) of alluvial sloping area located at Toero-ri, Bubuk-myeon, Miryang-si, Gyeongsangnam-do. The soil was Gagog series, which was a member of the fine silty, mixed, nonacid, mesic family of Aeric Endoaquepts (Low Humic-Gley soils). Two drainage methods, namely under Open ditch drainage methods (ODM) and, Closed pipe drainage methods (PDM) were installed within 1-m position at the lower edge of the upper paddy fields. The results showed that sum of excess water days ($SWD_{30}$), which was used to represent the moisture stress index, was 42 days (the lowest) in the PDM compared with 110 days in the ODM. Most of upland crops were more susceptible to excessive soil water during panicle initial stage on more PDS than on IDS. Yield of upland crops in the PDM was continuously increased by the rate of 15.1% on sorghum, 15.4% foxtail millet, 53.6% proso millet, 49.6% soybean and 47.9% adzuki bean as compared in the ODM. The capacity for tolerance by excessive soil water based on yield of each upland crop in the poorly drained sloping paddy fields was the order of sorghum, soybean, foxtail millet, proso millet and adzuki bean. Therefore, Sorghum is relatively tolerant to excessive soil water conditions and, may be grown successfully in converted paddy field.

• Journal of Microbiology and Biotechnology
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• v.30 no.5
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• pp.717-725
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• 2020

The use of plant growth-promoting rhizobacteria is economically viable and environmentally safe for mitigating various plant stresses. Abiotic stresses such as flood and drought are a serious threat to modern agriculture. In the present study, the indole-3-acetic acid-producing rhizobacterium R. sphaeroides KE149 was selected, and its effects on the growth of adzuki bean plants under flood stress (FS) and drought stress (DS) were investigated. IAA quantification of bacterial pure culture revealed that KE149 produced a significant amount of IAA. Moreover, KE149 inoculation notably decreased stress-responsive endogenous abscisic acid and jasmonic acid and increased salicylic acid in plants under DS and FS. KE149 inoculation also increased proline under DS and methionine under FS. In addition, KE149 inoculation significantly increased the levels of calcium (Ca), magnesium (Mg), and potassium (K) while lowering the sodium (Na) content in the plant shoot under stress. KE149-treated plants had markedly greater root length, shoot length, stem diameter, biomass, and higher chlorophyll content under both normal and stressed conditions. These results suggest that KE149 could be an efficient biofertilizer for mitigating water stress.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.57 no.1
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• pp.7-15
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• 2012

Agronomic characteristics of 150 adzuki bean ($Vigna$ $angularis$ W.F. Wight) germplasm collected in Korea were investigated in order to establish basic data for the improvement of crop breeding. Growth types were classified as 3 types of indeterminate type, determinate type, and semideterminate type, of which indeterminate type was the highest percentage of 96.6%. Seed color were classified as 8 colors of which dark brown took 66.5% in 150 adzuki bean germplasm. Days from seeding to maturity showed the range from 89 to 142 days with 115 days in the average and the highest frequency proportion was 37.2% of the group from 131 to 140 days, and the next was 27.3% of the group from 121 to 130 days among 150 germplasm. Pod length showed the range from 5.9 to 10.1 cm with 7.8 cm in the average and the highest frequency distribution of it was the group from 7.1 to 8.0 cm with the proportion of 45.1% and the next was the group from 8.1 to 9.0 cm with the proportion of 32.2%. Number of pods per plant showed the range from 5.0 to 132.5 pods with 28.5 pods in the average and the highest frequency distribution of it was the group from 11.0 to 20.0 pods with the proportion of 30.8% and the next was the group from 21.0 to 30.0 pods with the proportion of 28.6%. Number of seeds per pod showed the range from 5.3 to 11.3 seeds with 8.2 seeds in the average and the highest frequency proportion of it was the group from 7.1 to 8.0 seeds, which occupied 32.2% among 150 germplasm. 89.3% of 150 germplasm showed the resistance to shattering of grains at harvest period. 100 grain weight showed the range from 5.7 to 23.0 g with 12.9 g in the average and the highest frequency proportion of it was the group from 9.01 to 13.0 g, which occupied 43.3% and the next was the group from 13.01 to 17.00 g with the proportion of 28.5% of 150 germplasm.

• Korean Journal of Agricultural Science
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• v.39 no.4
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• pp.483-489
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• 2012

Preference of stink bugs to various leguminous seeds was evaluated by using VTS (Video Tracking System) in laboratory. Major soybean stink bugs such as bean bug, Riptortus pedestris (Fabricius), one-banded stink bug, Piezodorus hybneri (Gmelin), eastern green stink bug, Nezara antennata (Scott), and sole bug, Dolycoris baccarum (L.) were significantly most attracted to Cheongjakong, a soybean variety, baited fish-net trap, followed by soybean varieties Ilpumgeomjeongkong and Taekwangkong, a peanut variety Daekwangdangkong, a kidney bean variety Gangnangkong, and a adzuki bean variety Jungwonpat, respectively in a soybean field. VTS observation in laboratory showed that R. pedestris and D. baccarum had significantly higher frequency of visit on Cheongjakong, followed by Ilpumgeomjeongkong. However, P. hybneri, N. antennata and Halyomorpha halys (Stal) had significantly higher number of visits on Cheongjakong, Seonnogkong and Jinpumkong, followed by Ilpumgeomjeongkong. The sojourned time of stink bugs, however, was significantly longer on Cheongjakong regardless of species of the bugs. Accordingly, Cheongjakong was evaluated as the most preferred soybean seed by fish-net trap and VTS. Thus, VTS is found to be an effective means to evaluate the food preference of stink bugs.