• Title/Summary/Keyword: 헥사코나졸

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Effect of Triazole Compounds Treatment on Quality of Cut Flower of Dendranthema grandiflorum 'Baegkwang' (트리아졸계 화합물 처리가 절화국화의 품질에 미치는 영향)

  • Kim, Ju Hyoung;Kim, Si Dong;Lee, Hee Doo;Kim, Tae Jung;Yun, Tae;Paek, Kee Yoeup
    • FLOWER RESEARCH JOURNAL
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    • v.16 no.1
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    • pp.57-62
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    • 2008
  • The objective of this study was to investigate the effect of triazole compounds [hexaconazole ($50mg{\cdot}L^{-1}$), diniconazole ($50mg{\cdot}L^{-1}$), myclobutanil ($150mg{\cdot}L^{-1}$), difenoconazole ($50mg{\cdot}L^{-1}$), tebuconazole ($500mg{\cdot}L^{-1}$), and bitertanol ($50mg{\cdot}L^{-1}$)] on commercial quality improvement of cut flowers of Dendranthema grandiflorum 'Baegkwang' Plant height, cut flower length and internode length decreased by all triazole compounds. Plant height, cut flower length, internode length and flower neck length were shortened by treatment of $50mg{\cdot}L^{-1}$ diniconazole and $500mg{\cdot}L^{-1}$ tebuconazole. Flower neck was thickened by hexaconazole and myclobutanil. Flower diameter increased with myclobutanil and bitertanol, while it decreased with tebuconazole. Among physiological injury, open center increased with bitertanol treatment. Overall $50mg{\cdot}L^{-1}$ diniconazole and $500mg{\cdot}L^{-1}$ tebuconazole showed a possitive effect on length flower neck and increasing chlorophyll content, while decreasing plant height, cut flower length and diameter of flowers. Thus it is necessary to consider kind, concentration, and treatment times for effective control of cut flower quality.

Influence of Hexaconazole on Biochemical Constituents of Groundnut (땅콩의 생화학성분에 미치는 Hexaconazole의 영향)

  • Johnson, I.;Marimuthu, T.;Samiyappan, R.;Cha, Byeong-Jin
    • The Korean Journal of Pesticide Science
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    • v.12 no.4
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    • pp.335-341
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    • 2008
  • In this study, hexaconazole 5% SC, an ergosterol biosynthesis inhibitor, was tested on groundnut with its recommended ($500\;mL\;ha^{-1}$) and higher ($2,000\;mL\;ha^{-1}$) concentrations under greenhouse conditions in India. Its influence on biochemical constituents of groundnut plants was assessed apart from its disease management potential against late leaf spot caused by Phaeoisariopsis personata (Berk and Curt). Likewise, leaf samples were collected from hexaconazole 5% SC-sprayed plants at different time intervals. Thereafter, their analyses showed considerable differences in the plant constituents, such as chlorophyll, soluble protein, and total phenol contents and the activity of nitrate reductase enzyme. The induction activity of defense-related enzyme, peroxidase, was also analyzed. However, no difference was observed in the isozymic pattern. Moreover, the ground kernels collected from treated plants also showed no difference in the estimated carbohydrate and other constituents.

Alternative Fungicide Spraying for the Control of Powdery Mildew Caused by Sphaerotheca fusca on Greenhouse Watermelon (Citrullus lanatus) (시설 수박 흰가루병 방제를 위한 살균제 교차방제 체계)

  • Kang, Hyo-Jung;Kim, Youngsang;Han, Bongtae;Kim, Taeil;Noh, Jaegwan;Kim, Yeegi;Shin, Hyeon-Dong
    • Research in Plant Disease
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    • v.20 no.1
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    • pp.31-36
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    • 2014
  • Alternative spraying was developed using fungicides and potassium phosphonate to control watermelon powdery mildew (WPM) caused by Sphaerotheca fusca under greenhouse condition. In 2010 trial, a total of 9 combinations of 6 fungicides which are legally registered in Korea and currently used on watermelon farms were tested for the control efficacy against WPM. Though the combination of chlorothalonil (Chl)-myclobutanil (My)-fenarimol (Fen)-hexaconazole (Hex) was the most effective (82.6%) in the first-year trial, it had the problem that My, Fen and Hex have the same mode of action. Therefore, in the second-year trial to improve the fungicide combination and to reduce fungicide application, fungicides and potassium phosphonate (P) combinations were tested for WPM control using 500 ppm aqueous potassium phosphonate solution which is both eco-friendly and showing different mode of action from the fungicides tested. The P-My-Fen-Hex applied at 10-day intervals provided relatively high control (75.6%), whereas Chl-My-Fen-P provided 31.8% control. To improve the control, fungicides and P were applied at 7-day intervals in the third-year trial. Though Chl-My-Fen-Hex provided the highest control (89.6%), P-My-Fen-Hex also provided relatively high control (83.5%) compared to 65.9 % control with Chl-My-Fen-P, which suggests that Chl-My-Fen-Hex could be replaced with P-My-Fen-Hex for WPM control.

Survey on Pesticide Residues in Commercial Agricultural Products in the Northern Area of Seoul (서울특별시 강북지역 유통 농산물들에 대한 농약잔류실태조사)

  • Seung, Hyun-Jung;Park, Sung-Kyu;Ha, Kwang-Tae;Kim, Ouk-Hee;Choi, Young-Hee;Kim, Si-Jung;Lee, Kyeong-Ah;Jang, Jung-Im;Jo, Han-Bin;Choi, Byung-Hyun
    • Journal of Food Hygiene and Safety
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    • v.25 no.2
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    • pp.106-117
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    • 2010
  • This study was carried out to investigate the current status of pesticide residues in 3,988 agricultural products in the northern area of Seoul from January to December in 2009. 3,988 samples comprising 109 types of agricultural products were assessed via a multiresidue method to detect 272 pesticides. Pesticide residues were detected in 25.6% (1,021 of 3,988 samples), and the rate at which the detected residues violated the maximum residue levels (MRLs) of the Korean Food Code was 2.2% (89 of 3,988 samples). The agricultural products which exceeded their maximum residue limits were leek, ginseng, welsh onion, crown daisy and lettuce (leaf). Additionally, the most frequently detected pesticide that exceeded the regulation maximum was endosulfan, procymidone, tolclofos-methyl, iprodione and flutolanil.

Buffer Zones for Non-Target Organisms by Aerial Pesticide Application Around Rice Paddy (벼 재배지의 항공 방제시 비표적 생물에 대한 안전거리)

  • Park, Yeon-Ki;Jin, Yeoung-Duck;Kim, Byung-Seok;Park, Kyung-Hun;Lee, Jea-Bong;Shin, Jin-Sup;Bae, Chung-Han;Lee, Kyu-Seung
    • The Korean Journal of Pesticide Science
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    • v.11 no.1
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    • pp.32-37
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    • 2007
  • The study was carried out to establish buffer zone for the protection of the non-target organisms by aerial pesticide application. The two pesticide combination of 3-way tank-mixing of three pesticides for aerial application, ferimzone tricyclazole SC + BPMC EC + validamycin-A SL and hexaconzole EC + isoprothiolane EC+phenthoate EC were selected for the simultaneous control of key pests on paddy rice as blast, sheath blight, brown planthopper and moth. Aquatic organisms including killifish and loach in the paddy field and nearby water reservoirs were not affected by aerial application of the pesticides. However, all the water flea were killed, when they were exposed 10 m from the aerially sprayed site, while the water flea exposed in 30 m away from the site were not affected. Honeybees within 50 m in the wind direction and 20 m in the opposite wind direction showed a mortality of $7{\sim}100%$. Residues concentration of the pesticides in paddy water were not detectable level after six days from aerial application. Drifting distance of aerially sprayed droplet from the target area was within 30 m in the wind direction and 20 m in the opposite direction. Consequently, it was the buffer zones in the aerial pesticides application for the protection of the non-target organisms should be at least 50 m for aquatic organisms and 100 m for honeybees.