EFFECT OF PHASEOLUS' PLANTATION DATES ON THE POPULATION DENSITIES OF CERTAIN SUCKING PESTS | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 3, Volume 29, Issue 7, July 2004, Page 4197-4202 PDF (1.66 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2004.239995 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| S. A. Hady,; M. A. E. EI-Bessomy,; H. I. H. Omar, | ||||
| Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt. | ||||
| Abstract | ||||
| Three Planting dates of Phaseolus plant "Phaseo/us vu/garis" (L.) were tested for summer and fall plantation (Mid of February ,Mid of March and Mid of April) and (Mid of July ,Mid of August and Mid of September) throughout tow successive years (2001 & 2002) in Giza Governorate on different stages of the whitefly Bemisia tabaci (Genn.) and the common red spider mite Tetranychus urticae (Koch) as a cultural practices management . The obtained data of summer plantation revealed that there were non-significant effects of the tested planting dates on both Pests . In the summer plantation the early planting date showed that the least infestation of whitefly and common red spider mite was-at the Mid of February and the highest was at the Mid of April. This may be refered to the increase of temperature and relative humidity. In fall plantation the early planting date showed that the least infestation of whitefly for the three developmental stages at the Mid of July and the highest was at the Mid of September but the population of the common red spider mite was disappeared after Mid of July. | ||||
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