QUALITATIVE ASSESSMENT OF CERTAIN INSECTICIDES APPLIED BY DIFFERENT GROUND SPRAYERS AGAINST WHITEFLY, BEMISIA TABACI (GENN.) ON EGGPLANT. | ||
| Egyptian Journal of Agricultural Research | ||
| Article 5, Volume 75, Issue 3, September 1997, Pages 565-577 PDF (3.97 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.1997.410293 | ||
| Authors | ||
| MOHAMED A. HINDY; ABDELGHANY M. EL-SAYED; SABRY M. ABDEL-SALAM; MOHAMED A. SAMY | ||
| Plant Protection Research Institute, Agricultural Research Centre, Giza, Egypt | ||
| Abstract | ||
| Qualitative assessment of Actellic, Naturalis-L, and Applaud insecticides sprayed with the recommended dosages by means of five ground spraying techniques was conducted. The spray volume ranged between 6-233 l/fed. against whitefly on eggplant through two successive seasons at Damietta area. Sensitive cards were mounted on eggplant, spray collectors and ground wires were used also to determine the spray coverage and the spray lost on ground between plants. All treatments were applied as a placement spray technique. Number and size of leaves of different levels of eggplant and its distribution percentages were determined. The coefficient of curling was calculated for eggplant. Performance rate of the tested sprayers was determined. According to quality of spray coverage, the ground machines could be arranged descendingly as follows : knapsack motor sprayer "Arimitsu". knapsack sprayer "Solo", Micron ULVA, Semco sprayer and conventional sprayer. A positive relationship was found between application rate and the lost spray. About 25% from droplets were deposted on the lower surface of the leaves of different levels of eggplants with the low-volume sprayers : Micron ULVA, Semco, and Solo sprayers, respectively. | ||
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