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Development of a botanical insectici...

Leatemia, Johanna Audrey.

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Development of a botanical insecticide from Ambon and surrounding areas (Indonesia) for local use.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Development of a botanical insecticide from Ambon and surrounding areas (Indonesia) for local use./
作者:	Leatemia, Johanna Audrey.
面頁冊數:	136 p.
附註:	Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5282.
Contained By:	Dissertation Abstracts International64-11B.
標題:	Agriculture, Agronomy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ85458
ISBN:	0612854582

Development of a botanical insecticide from Ambon and surrounding areas (Indonesia) for local use.
Leatemia, Johanna Audrey.

Development of a botanical insecticide from Ambon and surrounding areas (Indonesia) for local use. - 136 p.

Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5282.

Thesis (Ph.D.)--The University of British Columbia (Canada), 2003.

Intensive use of synthetic insecticides to control insect pests had led to many problems such as pest resistance and resurgence, effects on non-target organisms, human exposure and environmental impacts. These negative effects have provided the impetus for the development of alternatives including botanical insecticides. Some tropical plant families (e.g. Meliaceae and Annonaceae) have been shown to possess promising insecticidal properties. The general objectives of this study were to identify sources of botanical insecticides from plants growing in Ambon and surrounding areas (Indonesia) that might be of value for commercial development, and to develop simple methods of production for local use in these areas.

ISBN: 0612854582Subjects--Topical Terms:

1018679
Agriculture, Agronomy.

Development of a botanical insecticide from Ambon and surrounding areas (Indonesia) for local use.
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245 1 0 $a Development of a botanical insecticide from Ambon and surrounding areas (Indonesia) for local use.
300 $a 136 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5282.
500 $a Adviser: Murray B. Isman.
502 $a Thesis (Ph.D.)--The University of British Columbia (Canada), 2003.
520 $a Intensive use of synthetic insecticides to control insect pests had led to many problems such as pest resistance and resurgence, effects on non-target organisms, human exposure and environmental impacts. These negative effects have provided the impetus for the development of alternatives including botanical insecticides. Some tropical plant families (e.g. Meliaceae and Annonaceae) have been shown to possess promising insecticidal properties. The general objectives of this study were to identify sources of botanical insecticides from plants growing in Ambon and surrounding areas (Indonesia) that might be of value for commercial development, and to develop simple methods of production for local use in these areas.
520 $a Crude ethanolic seed extracts of <italic>Annona muricata</italic> L., <italic> A. squamosa</italic> L. (Annonaceae), <italic>Lansium domesticum</italic> Corr., and <italic>Sandoricum koetjape</italic> (Burm. F.) Merrill (Meliaceae) collected from different locations and years in Maluku, Indonesia, were screened for inhibition of larval growth against the polyphagous lepidopteran, <italic> Spodoptera litura</italic> (Fabr.). Extracts of <italic>A. squamosa</italic> were the most active ones. These extracts were significantly more active (20-fold) than <italic>A. muricata</italic>. There were geographic as well as annual differences among the extracts of both species. Extracts of <italic>L. domesticum </italic> and <italic>S. koetjape</italic> did not show sufficient bioactivity to be considered further.
520 $a Laboratory evaluation was carried out to assess the efficacy of the promising extracts. Aqueous emulsions of ethanolic seed extracts and crude aqueous seed extracts of <italic>A. squamosa</italic> were tested via bioassays against the diamondback moth <italic>Plutella xylostella</italic> L. and the cabbage looper, <italic>Trichoplusia ni</italic> (Hubner). The extracts showed toxic as well as antifeedant effects against both species.
520 $a Greenhouse trials were conducted to assess the efficacy of the extracts against diamondback moth larvae. Toxicity of crude aqueous extracts was evaluated against some commercially available biocontrol agents. An aqueous emulsion of an ethanolic seed extract at a concentration of 0.5% (w/v) was more (2.5 fold) effective than 1% Rotenone, a commercial insecticide. Crude aqueous seed extracts showed efficacy comparable to pyrethrum (0.1% a.i), a widely used botanical insecticide. <italic>Chrysoperia carnea</italic> (Stephens) larvae were the least susceptible to the extracts followed by <italic>Orius insidiosus</italic> (Say.) adults, while <italic>Trichogramma brassicae</italic> (Bezd) adults were the most susceptible. (Abstract shortened by UMI.)
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650 4 $a Agriculture, Agronomy. $3 1018679
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