CONVENTIONAL AND DEVELOPMENTAL SPRAYING TECHNIQUES FOR CONTROLLING WHITEFLY ATTACKING TOMATO PLANTS IN GREENHOUSES. | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 6, Volume 85, Issue 1, March 2007, Page 67-75 PDF (2.05 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2007.211061 | ||||
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| Author | ||||
| ABEL-MEGED E. AMMAR | ||||
| Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| Field experiments were undertaken in El - Ismaillia Govemorate, Egypt to evaluate the performance of two ground spraying techniques in greenhouse against whitefly Bemisia tabad (Genn) infesting tomato plants during 2004 & 2005 seasons. Tested spraying equipment were : semco sprayer with hand lance at 6 L/fad. and conventional sprayer at 300 1/fad. with the use of Prempet and jojoba (plant extract) insecticides. Data indicated that semco sprayer with hand lance at 6 L/fad. gave satisfactory coverage on tomato plants amounted 93.75 and 90.7% and minimum lost between plants accounted for 0.59 - 1.48% and very poor contamination on the applicator by 5.66 - 8.14 of spray deposit. But in case of conventional sprayer at 300 L/fad., percentage of spray deposit ranged presented by 42.7 and 34.2% on tomato plants, lost on land between tomato plants was 17.95 and 15.6%, and contamination of applicator reached 47.43 and 41.7%. Data showed that semco sprayer with hand lance at 6 L/fad. gave excellent control against whitefly by using recommended and 3/4 recommended of Prempet insecticide at 300 ljfad. which presented by 80.9 and 67.1%, respectively, followed by jojoba (plant extract) at 500 1/100 litre water with the same sprayer at recommended and 3/4 recommended rates give 68. land 50.3%, respectively. Meanwhile, conventional sprayer gave percent reduction ranged between 59.4 and 56.6 by using Prempet insecticide and 50.1 and 37.4 % with jojoba (plant extract) at recommended and 3/4 recommended respectively. | ||||
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