IMPACT OF SOWING DATES ON THE INFESTATION LEVEL OF SOME PIERCING-SUCKING PESTS AND YEILD OF CUCUMBER UNDER FAYOUM CONDITION

Document Type : Research articles.

Authors

Plant Protection Research Institute, ARC, Dokki, Giza, 12618 Egypt

Abstract

The effect of sowing dates (March, 15th, April, 1st and April,
15th) during summer plantation on the infestation level of, Aphis
gossypii , Myzus persicae ,whitefly, Bemisia tabaci and spider mite,
Tetranycus urticae and the yield of cucumber, Cucumis sativus, during
two successive seasons (2014 and 2015) were studied. Data indicate
that, the degree of infestation increased significantly by delaying
planting date. The number of infestation with Aphids were (8.2, 11.1
and 21.4 individuals/leaf) during 2014 season, (5.5, 9.1 and 22.0
individuals/leaf) during 2015 season for the three sowing dates,
respectively. The average weight of cucumber fruit reached the highest
(180.0 & 258.7 Kg/date) in the first season and (191.7 & 269.9 Kg/date
in the second season for the first sowing date for unprotected and
protected, respectively. For the other two sowing dates, the infected
levels for the other two pests , B. tabaci and T.urticae as well as the
yield of cucumber were occupied the same trend.

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Fayoum Journal of Agricultural Research and Development
Volume 30, Issue 1
January 2016
Pages 29-39

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