• Title/Summary/Keyword: Cercospora leaf spot

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A New Mungbean Cultivar 'Juhyeon' with High Sprout Yield (고수율 나물 녹두 신품종 '주현')

  • Kim, Dong-Kwan;Son, Dong-Mo;Choi, Jin-Gyung;Kim, Myeong-Seok;Shin, Hae-Ryong;Lee, Seuk-Ki;Seo, Min-Jung;Cho, Sang-Kyun;Oh, Young-Jin;Kim, Hyun-Tae
    • Korean Journal of Breeding Science
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    • v.43 no.3
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    • pp.218-221
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    • 2011
  • A mungbean cultivar 'Juhyeon' (Vigna radiata (L.) Wilczek) was derived from the cross between Keumseong and VC1834-4-B-2-B-3B-B at Jeollanamdo Agricultural Research & Extension Services (JARES) in 2009. 'Juhyeon' has an erect growth habit, heart leaflet, green hypocotyl, black and straight pod when matured, and dull green seed surface. The pod number per plant was 26, which was 8 more than check cultivar 'Owool'. The plant height and thousand seed weight were 66 cm and 47 g, respectively. This cultivar has field resistance to mungbean mottle virus, cercospora leaf spot, powdery mildew, and lodging. The sprout yield was up to 18% more than that of the check cultivar. The average yield was 1.84 MT/ha, which was 6% more than the check cultivar.

A New High Quality and Yield Mungbean Cultivar "Sohyeon" (고품질 다수성 녹두 신품종 "소현")

  • Kim, Dong-Kwan;Lee, Ya-Seong;Jung, Byung-Joon;Son, Dong-Mo;Moon, Jung-Kyung;Oh, Young-Jin;Kim, Jung-Bong;Kim, Kyong-Ho
    • Korean Journal of Breeding Science
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    • v.40 no.4
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    • pp.507-511
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    • 2008
  • A new mungbean cultivar "Sohyeon" (Vigna radiata (L.) Wilczek) was bred from the cross between "Suwon28" and "KM94004" at the Jeollanamdo Agricultural Research & Extension Services (JARES) in 2006. "Sohyeon" has erect type, heart shape leaflet, green hypocotyl, black and straight pod when matured, and dull green seed surface. This new cultivar shows 42 g per a thousand seed weight. And sprout yield was up to 9% more than that of comparison cultivar "Owool". It contains 12.0, 12.4 mg/g of vitexin and isovitexin, respectively, which was shown about 38, 31% more than comparison cultivar. It shows resistance to mungbean mottle virus, cercospora leaf spot, and powdery mildew in the normal cultivate condition. The average yield of this cultivar shows 1.62 ton/ha, which was 7% more than comparison cultivar.

A New Mungbean Cultivar, "Daseon" with Greenish Purple Hypocotyl and High Yielding (녹자색배축 다수성 녹두 신품종 "다선")

  • Kim, Dong-Kwan;Lee, Ya-Seong;Jung, Byung-Joon;Son, Dong-Mo;Moon, Jung-Kyung;Oh, Young-Jin;Kim, Kyong-Ho
    • Korean Journal of Breeding Science
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    • v.40 no.4
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    • pp.456-460
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    • 2008
  • A new mungbean cultivar Daseon (Vigna radiata (L.) Wilczek) was derived from the cross between KM9003-2B-783 and Keumseong at the Jeollanamdo Agricultural Research & Extension Services (JARES) in 2006. Daseon has erect growth habit, heart leaflet, greenish purple hypocotyl, black and straight pod when matured, and dull green seed surface. A thousand seed weight was 52 g, sprout yield ratio was 630%, and the anthocyanin (delphinidin 3-glucoside) of fresh sprouts contained 1.7 ug/g. The average plant height was 2 cm shorter than the check cultivar (Owool). It is field resistance to mungbean mottle virus, cercospora leaf spot, and powdery mildew. The average yield was 1.76 ton/ha, which was 21% more than check cultivar.

A Survey on Diseases and Insect Pests in Sweet Persimmon Export Complexes and Fruit for Export in Korea (단감수출단지 과원과 수출단감 병해충 조사)

  • Jung, Young Hak;You, Eun Ju;Son, Daeyoung;Kwon, Jin Hyeuk;Lee, Dong Woon;Lee, Sang Myeong;Choo, Ho Yul
    • Korean journal of applied entomology
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    • v.53 no.2
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    • pp.157-169
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    • 2014
  • Between 2010 and 2012, diseases and insect pests of sweet persimmon were surveyed at sweet persimmon export complexes and non-export orchards in Suncheon, Jeonnam Province; Jinju, Changwon (Dongeup and Bukmyeon), and Gimhae, Gyeongnam Province; and Ulzu, Ulsan. The following diseases were found in the sweet persimmon orchards: angular leaf spot (Cercospora kaki), anthracnose (Colletotrichum gloeosporioides and Colletotrichum acutatum), circular leaf spot (Mycosphaerella nawae), powdery mildew (Phyllactinia kakicola), and gray mold (Botrytis cinerea). Circular leaf spot was the most frequent and serious disease, and C. gloeosporioides and C. acutatum were found on fruits. Thirty-three insect pest species that belonged to 32 genera of 20 families in 5 orders were found in the sweet persimmon orchards; the two-spotted spider mite, Tetranychus urticae, was also found in the surveyed orchards. Apolygus spinolae, Pseudaulacaspis cockerelli, and Adoxophyes orana were widely found in the surveyed orchards; Spodoptera litura and Homona magnanima were also recorded. Damage by insect pests was low, and the quarantine insect pests peach pyralid moth (Dichocrocis punctiferalis) and persimmon fruit moth (Stathmopoda masinissa) were rarely or not found in the sweet persimmon export complexes. In addition, other quarantine insect pests, such as persimmon false spider mite (Tenuipalpus zhizhilashviliae) and Japanese mealybug (Planococcus kraunhiae), were not detected. These quarantine insect pests were also not found in the sorting places, storage houses, and fruits for export; however, scale insects and two-spotted spider mites were found at a low rate. Although anthracnose (C. acutatum) infested fruit was found in the storage houses, only one in Jinju and Gimhae.

Mungbean Cultivar, 'Munpyeong', with a Short Stem and High Yield (단경 다수성 녹두 품종 '문평')

  • Kim, Dong-Kwan;Choi, Jin-Gyung;Kwon, Oh-Do;Lee, Kyung-Dong;Seo, Min-Jung;Kim, Hyun-Tae
    • Korean Journal of Breeding Science
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    • v.50 no.4
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    • pp.485-489
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    • 2018
  • A mungbean cultivar "Munpyeong" (Vigna radiata (L.) Wilczek) was derived as a cross between "Keumseong" and "IT163157" at the Jeollanamdo Agricultural Research and Extension Services (JARES) in 2013. "Munpyeong" has an erect growth habit, heart leaflet, green hypocotyls, black and straight pods when matured, and a dull green seed surface. The stem length of "Munpyeong" was 60 cm, which was 6 cm shorter than that of the control cultivar "Owool." The pod number per plant was 25, which was 3 more than that of the control cultivar. The 1000 seed weight of "Munpyeong" was 45 g, which was 4 g lighter than that of the control cultivar "Owool." Its field resistance to mungbean mottle virus, cercospora leaf spot, and powdery mildew are similar to the control cultivar, whereas its field resistance to lodging was slightly stronger. The hard seed rate of "Munpyeong" was 3.2%, which was similar to that of the control cultivar. The sprout yield ratio was 7.54 times, which was 9% more than that of the control cultivar. The average yield of "Munpyeong" was 1.93 ton/㏊, which was 21% more than that of the control cultivar "Owool" (Cultivar registration number: 5878).

Effects of a Growth Retardant Paclobutrazol on the Growth and Yield Related Elements of Peanut (Archis hypogea L.) (생장조정제(生長調整劑) Paclobutrazol이 땅콩의 생육특성(生育特性)과 수량관련요소(收量關聯要素)에 미치는 영향(影響))

  • Lee, H.S.;Cho, J.S.
    • Korean Journal of Weed Science
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    • v.8 no.1
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    • pp.71-89
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    • 1988
  • This study was conducted to evaluate the effect of a growth retardant, Paclobutrazol on the growth, yield and its components. and physiological traits in peanut cv. Saeddle (early variety) and Nampung (medium variety). The results are summarized as follows : Main stem and branch length of both varieties were remarkably retarded at early growth stage application, but the retardation effect was reduced at late growth stage application. Number of branches was increased remarkably by treating 60ppm at 20days after seedling (DAS) in early variety. Lodging ill medium variety was not observed through growth period when 120ppm of Paclobutrazol was applied while lodging was not appeared between 40 DAS and 80 DAS in early variety. The numbers of riped pods in early variety was increased when application of 120ppm at 40 DAS was made while it was increased as application of 120ppm at 90 DAS in the medium variety. Cercospora leaf spot was reduced by spraying at 40 or 50 DAS regardless of concentration and varieties. Chlorophyll content and photosynthetic activity increased when paclobutrazol was applied during 40-60 DAS in early variety while these were observed at 90 DAS in medium variety. Seed weight tended to increase as paclobutrazol application was delayed. The ratio of pods to seeds was higher at 60ppm-40 DAS in early variety while it was higher at 120ppm-90 DAS in medium variety.

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