Ohn Mar Lynn, J. Korean Soc. Appl. Biol. Chem Woo-Geun Song, Jae-Kyoung Shim, Jang-Eok Kim, and Kyeong-Yeoll Lee

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Permalink : http://hdl.handle.net/20.500.126780000000098

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	WF.pdf (118.0 kB) sha256: b4ff36149504f53081ee5c632207338fab027215fd0ab1b628f074d2c559c8a6

Publication type			{"attribute_name": "Publication type", "attribute_name_i18n": "Publication type", "attribute_value": "Journal article"} Journal article
Upload Type			{"attribute_name": "Upload Type", "attribute_name_i18n": "Upload Type", "attribute_value": "Publication"} Publication
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	Title		WF.pdf
Publication date			{"attribute_name": "Publication date", "attribute_name_i18n": "Publication date", "attribute_value": "2010"} 2010
Authors			{"attribute_name": "Authors", "attribute_name_i18n": "Authors", "attribute_type": null, "attribute_value_mlt": [[[{" ": [[[{"Full name": "Ohn Mar Lynn, J. Korean Soc. Appl. Biol. Chem Woo-Geun Song, Jae-Kyoung Shim, Jang-Eok Kim, and Kyeong-Yeoll Lee"}]]]}]]]}

		Full name	Ohn Mar Lynn, J. Korean Soc. Appl. Biol. Chem Woo-Geun Song, Jae-Kyoung Shim, Jang-Eok Kim, and Kyeong-Yeoll Lee
Description			{"attribute_name": "Description", "attribute_name_i18n": "Description", "attribute_type": null, "attribute_value_mlt": [[[{"": "Toxicity of the plant-derived natural pesticide azadirachtin and two types of commercial neem\r (Azadirachta indica A. Juss)-based formulations, Neema (liquid type) and Neema-plus (pellet type),\r were evaluated based on the mortality rate and developmental inhibition of the sweetpotato\r whitefly (Bemisia tabaci) and root-knot nematode (Meloidogyne incognita). In a laboratory assay,\r when B. tabaci adults were fed leaves containing 5 or 10 ppm of azadirachtin solutions, the rates of\r female oviposition, subsequent egg hatch, and adult eclosion were significantly reduced to 23.1,\r 53.2, and 26.6% of the control, respectively. At a tomato greenhouse, the rates of adult colonization,\r oviposition and egg hatch were reduced to 78.2, 47.0, and 71.2% by Neema foliar spray and 31.3,\r 34.1, and 66.8% by soil treatment with Neema-plus relative to the control, respectively. When\r isolated soil nematodes were exposed to various concentrations of azadirachtin, Neema, and\r Neema-plus, the immobility of juvenile nematodes showed no change at 2 h after treatment,\r whereas a reduction of 36.3% was observed at day 1 with 10 ppm of azadirachtin. Nevertheless, the\r effects of neem formulations were faster and much higher than those of azadirachtin. At a\r cucumber greenhouse, soil treatments with neem formulations significantly reduced the numbers of soil nematodes and plant root-knots; the reduction with Neema was 12.1 and 9.0%, and with Neema-plus 26.4 and 24.6% of the control, respectively. Furthermore, soil treatment with Neemaplus greatly improved the growth of cucumber plants in nematode-infested pots. These results showed that azadirachtin and neem-based formulations were highly effective on the developmental inhibition of both whiteflies and root-knot nematodes. Thus, soil application of the neem-based formulations would be applicable for the control of both leaf-sucking and soil pests."}]]]}
			Toxicity of the plant-derived natural pesticide azadirachtin and two types of commercial neem (Azadirachta indica A. Juss)-based formulations, Neema (liquid type) and Neema-plus (pellet type), were evaluated based on the mortality rate and developmental inhibition of the sweetpotato whitefly (Bemisia tabaci) and root-knot nematode (Meloidogyne incognita). In a laboratory assay, when B. tabaci adults were fed leaves containing 5 or 10 ppm of azadirachtin solutions, the rates of female oviposition, subsequent egg hatch, and adult eclosion were significantly reduced to 23.1, 53.2, and 26.6% of the control, respectively. At a tomato greenhouse, the rates of adult colonization, oviposition and egg hatch were reduced to 78.2, 47.0, and 71.2% by Neema foliar spray and 31.3, 34.1, and 66.8% by soil treatment with Neema-plus relative to the control, respectively. When isolated soil nematodes were exposed to various concentrations of azadirachtin, Neema, and Neema-plus, the immobility of juvenile nematodes showed no change at 2 h after treatment, whereas a reduction of 36.3% was observed at day 1 with 10 ppm of azadirachtin. Nevertheless, the effects of neem formulations were faster and much higher than those of azadirachtin. At a cucumber greenhouse, soil treatments with neem formulations significantly reduced the numbers of soil nematodes and plant root-knots; the reduction with Neema was 12.1 and 9.0%, and with Neema-plus 26.4 and 24.6% of the control, respectively. Furthermore, soil treatment with Neemaplus greatly improved the growth of cucumber plants in nematode-infested pots. These results showed that azadirachtin and neem-based formulations were highly effective on the developmental inhibition of both whiteflies and root-knot nematodes. Thus, soil application of the neem-based formulations would be applicable for the control of both leaf-sucking and soil pests.
Keywords			{"attribute_name": "Keywords", "attribute_name_i18n": "Keywords", "attribute_type": null, "attribute_value_mlt": [[[{"": "azadirachtin"}]], [[{"": " Bemisia tabaci"}]], [[{"": " neem"}]], [[{"": " plant-derived pesticides"}]], [[{"": " root-knot nematodes"}]]]}
			azadirachtin
Keywords			{"attribute_name": "Keywords", "attribute_name_i18n": "Keywords", "attribute_type": null, "attribute_value_mlt": [[[{"": "azadirachtin"}]], [[{"": " Bemisia tabaci"}]], [[{"": " neem"}]], [[{"": " plant-derived pesticides"}]], [[{"": " root-knot nematodes"}]]]}
			Bemisia tabaci
Keywords			{"attribute_name": "Keywords", "attribute_name_i18n": "Keywords", "attribute_type": null, "attribute_value_mlt": [[[{"": "azadirachtin"}]], [[{"": " Bemisia tabaci"}]], [[{"": " neem"}]], [[{"": " plant-derived pesticides"}]], [[{"": " root-knot nematodes"}]]]}
			neem
Keywords			{"attribute_name": "Keywords", "attribute_name_i18n": "Keywords", "attribute_type": null, "attribute_value_mlt": [[[{"": "azadirachtin"}]], [[{"": " Bemisia tabaci"}]], [[{"": " neem"}]], [[{"": " plant-derived pesticides"}]], [[{"": " root-knot nematodes"}]]]}
			plant-derived pesticides
Keywords			{"attribute_name": "Keywords", "attribute_name_i18n": "Keywords", "attribute_type": null, "attribute_value_mlt": [[[{"": "azadirachtin"}]], [[{"": " Bemisia tabaci"}]], [[{"": " neem"}]], [[{"": " plant-derived pesticides"}]], [[{"": " root-knot nematodes"}]]]}
			root-knot nematodes
Files			{"attribute_name": "Files", "attribute_name_i18n": "Files", "attribute_type": "file", "attribute_value_mlt": [[[[{"dateType": "Available", "dateValue": "2020-05-05"}]], [[{"value": "118 Kb"}]], {"accessrole": "open_access", "accessrole.name": "Access Type", "displaytype": "preview", "displaytype.name": "Display Type", "filename": "WF.pdf", "filename.name": "Display File", "format": "application/pdf", "licensetype": "license_free", "licensetype.name": "License", "mimetype": "application/pdf"}]]} Available 2020-05-05 118 Kb application/pdf preview WF.pdf open_access application/pdf
Journal articles			{"attribute_name": "Journal articles", "attribute_name_i18n": "Journal articles", "attribute_type": null, "attribute_value_mlt": [[[{"Journal title": "J. Korean Soc. Appl. Biol. Chem"}], [{"Volume": "53(5);598-604"}]]]}
	Journal title		J. Korean Soc. Appl. Biol. Chem
	Volume		53(5);598-604

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