Whitefly-Parasitoid-Insecticide Interactions: A Case Study Of Bemisia Tabaci Genn, 1889 (Hemiptera: Aleyrodidae), Encarsia Hitam Hayat, 2011 (Hymenoptera: Aphelinidae) And Selected Insecticides On Brinjal Plant Hosts (Solanum Melongena L.) (Family: Solanaceae) In The Field
A field study was conducted to evaluate the effects of three insecticides (abamectin, malathion and diafenthiuron) on the interactions between Bemisia tabaci (Homoptera: Aleyrodidae) the brinjal pest, and the parasitoid Encarsia hitam (Hymenoptera: Aphelinidae), as well as on plant performance...
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2013
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my-usm-ep.439012019-04-12T05:26:10Z Whitefly-Parasitoid-Insecticide Interactions: A Case Study Of Bemisia Tabaci Genn, 1889 (Hemiptera: Aleyrodidae), Encarsia Hitam Hayat, 2011 (Hymenoptera: Aphelinidae) And Selected Insecticides On Brinjal Plant Hosts (Solanum Melongena L.) (Family: Solanaceae) In The Field 2013-09 Askarali, Nur Farhamizah QH1 Natural history (General - Including nature conservation, geographical distribution) A field study was conducted to evaluate the effects of three insecticides (abamectin, malathion and diafenthiuron) on the interactions between Bemisia tabaci (Homoptera: Aleyrodidae) the brinjal pest, and the parasitoid Encarsia hitam (Hymenoptera: Aphelinidae), as well as on plant performances and fruit production. All insecticides were applied weekly at recommended doses over two brinjal cropping periods. Overall results showed high total numbers of whitefly on untreated plants in the first (14.08 ± 1.44 per leaf) and second (17.50 ± 4.65 per leaf) cropping periods compared to plants that were treated with abamectin (13.88 ± 3.32), malathion (9.80 ± 2.19 per leaf) and diafenthiuron (10.40 ± 2.41 per leaf) in the first crop and in second crop with 15.65 ± 5.42, 8.35 ± 2.79 and 9.48 ± 2.3 per leaf respectively. Malathion and diafenthiuron were the most effective insecticides that reduced whitefly populations below economic threshold level (ETL). Percentages of parasitism was high on whitefly nymphs in untreated control plants in the first and second cropping periods (3.17% - 12.82%) and (0.52% - 10.00%) respectively compared with insecticide-treated plants (0.62% - 12.50%) and (1.01% - 8.00%) respectively. All insecticides affected the parasitization of whitefly although no significance difference was observed among treatments. 2013-09 Thesis http://eprints.usm.my/43901/ http://eprints.usm.my/43901/1/Nur%20Farhamizah%20Bt%20Askarali24.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Kajihayat |
| institution |
Universiti Sains Malaysia |
| collection |
USM Institutional Repository |
| language |
English |
| topic |
QH1 Natural history (General - Including nature conservation geographical distribution) |
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QH1 Natural history (General - Including nature conservation geographical distribution) Askarali, Nur Farhamizah Whitefly-Parasitoid-Insecticide Interactions: A Case Study Of Bemisia Tabaci Genn, 1889 (Hemiptera: Aleyrodidae), Encarsia Hitam Hayat, 2011 (Hymenoptera: Aphelinidae) And Selected Insecticides On Brinjal Plant Hosts (Solanum Melongena L.) (Family: Solanaceae) In The Field |
| description |
A field study was conducted to evaluate the effects of three insecticides
(abamectin, malathion and diafenthiuron) on the interactions between Bemisia tabaci
(Homoptera: Aleyrodidae) the brinjal pest, and the parasitoid Encarsia hitam
(Hymenoptera: Aphelinidae), as well as on plant performances and fruit production.
All insecticides were applied weekly at recommended doses over two brinjal
cropping periods. Overall results showed high total numbers of whitefly on untreated
plants in the first (14.08 ± 1.44 per leaf) and second (17.50 ± 4.65 per leaf) cropping
periods compared to plants that were treated with abamectin (13.88 ± 3.32),
malathion (9.80 ± 2.19 per leaf) and diafenthiuron (10.40 ± 2.41 per leaf) in the first
crop and in second crop with 15.65 ± 5.42, 8.35 ± 2.79 and 9.48 ± 2.3 per leaf
respectively. Malathion and diafenthiuron were the most effective insecticides that
reduced whitefly populations below economic threshold level (ETL). Percentages of
parasitism was high on whitefly nymphs in untreated control plants in the first and
second cropping periods (3.17% - 12.82%) and (0.52% - 10.00%) respectively
compared with insecticide-treated plants (0.62% - 12.50%) and (1.01% - 8.00%)
respectively. All insecticides affected the parasitization of whitefly although no
significance difference was observed among treatments. |
| format |
Thesis |
| qualification_level |
Master's degree |
| author |
Askarali, Nur Farhamizah |
| author_facet |
Askarali, Nur Farhamizah |
| author_sort |
Askarali, Nur Farhamizah |
| title |
Whitefly-Parasitoid-Insecticide Interactions: A Case Study Of Bemisia Tabaci Genn, 1889 (Hemiptera: Aleyrodidae), Encarsia Hitam Hayat, 2011 (Hymenoptera: Aphelinidae) And Selected Insecticides On Brinjal Plant Hosts (Solanum Melongena L.) (Family: Solanaceae) In The Field |
| title_short |
Whitefly-Parasitoid-Insecticide Interactions: A Case Study Of Bemisia Tabaci Genn, 1889 (Hemiptera: Aleyrodidae), Encarsia Hitam Hayat, 2011 (Hymenoptera: Aphelinidae) And Selected Insecticides On Brinjal Plant Hosts (Solanum Melongena L.) (Family: Solanaceae) In The Field |
| title_full |
Whitefly-Parasitoid-Insecticide Interactions: A Case Study Of Bemisia Tabaci Genn, 1889 (Hemiptera: Aleyrodidae), Encarsia Hitam Hayat, 2011 (Hymenoptera: Aphelinidae) And Selected Insecticides On Brinjal Plant Hosts (Solanum Melongena L.) (Family: Solanaceae) In The Field |
| title_fullStr |
Whitefly-Parasitoid-Insecticide Interactions: A Case Study Of Bemisia Tabaci Genn, 1889 (Hemiptera: Aleyrodidae), Encarsia Hitam Hayat, 2011 (Hymenoptera: Aphelinidae) And Selected Insecticides On Brinjal Plant Hosts (Solanum Melongena L.) (Family: Solanaceae) In The Field |
| title_full_unstemmed |
Whitefly-Parasitoid-Insecticide Interactions: A Case Study Of Bemisia Tabaci Genn, 1889 (Hemiptera: Aleyrodidae), Encarsia Hitam Hayat, 2011 (Hymenoptera: Aphelinidae) And Selected Insecticides On Brinjal Plant Hosts (Solanum Melongena L.) (Family: Solanaceae) In The Field |
| title_sort |
whitefly-parasitoid-insecticide interactions: a case study of bemisia tabaci genn, 1889 (hemiptera: aleyrodidae), encarsia hitam hayat, 2011 (hymenoptera: aphelinidae) and selected insecticides on brinjal plant hosts (solanum melongena l.) (family: solanaceae) in the field |
| granting_institution |
Universiti Sains Malaysia |
| granting_department |
Pusat Pengajian Sains Kajihayat |
| publishDate |
2013 |
| url |
http://eprints.usm.my/43901/1/Nur%20Farhamizah%20Bt%20Askarali24.pdf |
| _version_ |
1747821300583235584 |