Citation
Dzolkhifli Omar, . Effect of adding mineral oil to the effectiveness of permethrin emulsion spray droplets on Plutella xylostella larvae. pp. 41-44. ISSN 0126-6128
Abstract
The effectiveness of permethrin emulsion spray droplets with (10 v/v) and without mineral oil was evaluated in the laboratory by bioassay using larvae of Plutella xylostella. A microtip nozzle was used to produce spray droplets ranging from 52 - 274m in volume median diameter. The 2nd instar larvae were placed on treated leaf discs and knockdown and mortality were recorded after 1 h and 24 h respectively. In both treatments as droplet size decreased the dose also decreased without losing the effectiveness of permethnn indicating that small droplets were more efficient than large droplets. When sprayed using droplet size between 70m to 100m there was no increase in the effectiveness of permethrin from emulsion spray droplets plus mineral oil compared to emulsion spray droplets alone. However for droplet sizes greater than 125m the effectiveness was reduced.
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Abstract
The effectiveness of permethrin emulsion spray droplets with (10 v/v) and without mineral oil was evaluated in the laboratory by bioassay using larvae of Plutella xylostella. A microtip nozzle was used to produce spray droplets ranging from 52 - 274m in volume median diameter. The 2nd instar larvae were placed on treated leaf discs and knockdown and mortality were recorded after 1 h and 24 h respectively. In both treatments as droplet size decreased the dose also decreased without losing the effectiveness of permethnn indicating that small droplets were more efficient than large droplets. When sprayed using droplet size between 70m to 100m there was no increase in the effectiveness of permethrin from emulsion spray droplets plus mineral oil compared to emulsion spray droplets alone. However for droplet sizes greater than 125m the effectiveness was reduced.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Plutella xylostella |
| AGROVOC Term: | Larvae |
| AGROVOC Term: | Permethrin |
| AGROVOC Term: | Mineral oils |
| AGROVOC Term: | Laboratory experimentation |
| AGROVOC Term: | Bioassays |
| AGROVOC Term: | Sprays |
| AGROVOC Term: | Pesticides |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:27 |
| URI: | http://webagris.upm.edu.my/id/eprint/22750 |
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