INFESTATION DENSITY OF LEAFHOPPERS; EMPOASCA DECIPIENS AND OROSIUS ALBICINCTUS AND GREEN BUG; NEZARA VIRIDULA ON SESAME IN FAYOUM | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 8, Volume 26, Issue 1, January 2012, Page 93-98 PDF (309.45 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2012.194681 | ||||
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| Abstract | ||||
| Field population of Empoasca decipiens Paoli, Orosius albicinctus Dist. and Nezara viridula were evaluated during 2010 and 2011 seasons on sesame; Sesamum indicum L. under Fayoum conditions. Sampled with sweeping net, Empoasca decipiens was relatively higher (132-173/25 double strokes/week) than O.albicinctus (13.6-19.7/25 double strokes/ week). The maximum densities of the former species were 304 and 349 /25 double strokes in 2010 and 2011 seasons, while were 36.5 and 40.5 /25 double strokes for the 2nd one. On the other hand, infestation with N. viridula began with relatively low numbers (2.0-3.3 individual/25 double strokes) and increased gradually to reach its maximum of 56.5 and 72.0 individual/25 double strokes in the 1st and 2nd week of August during 2010 and 2011 seasons, respectively. The estimated population densities of the studied three insects indicated that they became serious pests for sesame in Fayoum. | ||||
| Keywords | ||||
| Population; Empoasca decipiens; Orosius albicinctus; Nezara viridula; sesame | ||||
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