RESPONSE OF CABBAGE APHID, Brevicoryne brassicae LINNAEUS TO CERTAIN CULTURAL MEASURES ON THE INFESTATION LEVELS OF CANOLA CROP IN SOHAG REGION

Salman,, A. M. A.; Sakr, H. E.

doi:10.21608/jppp.2006.235173

RESPONSE OF CABBAGE APHID, Brevicoryne brassicae LINNAEUS TO CERTAIN CULTURAL MEASURES ON THE INFESTATION LEVELS OF CANOLA CROP IN SOHAG REGION

Document Type : Original Article

Authors

A. M. A. Salman, ¹
H. E. Sakr ²

¹ Plant Protection Department, Faculty Of Agriculture, South Valley University, Sohag.

² Plant Protection Department, Faculty of Agriculture, Shoubra El- Kima, Ain Shams University, Cairo.

10.21608/jppp.2006.235173

Abstract

The effect of some agricultural practices such as farmyard manure, first
irrigation, space of planting and phosphorus fertilization level on the infestation of
canola plants with the cabbage aphid, Brevicoryne brassicae L. was studied at the
Experimental Farms of South Valley University at Sohag, during 2003 i 2004 and
2004 i 2005 growing seasons. Results revealed that the number of B. brassr‘cae was
signiﬁcantly increased at 45 kg chemical nitrogen plus farmyard manure than at 15 or
30 units ! feddan of chemical nitrogen during the two seasons. The canola plants
which irrigated at 45 and 60 days as a first irrigation harboured highly significant
numbers of B. brassicee compared with the plants irrigated at 15 or 30 days. Results
show also that the population density of B. brassicae was signiﬁcantly increased when
using 10 and 15 cm planting space and by increasing phosphorus fertilization levels
during the two seasons of study, the high rate of phosphorous fertilization led to the
significantly increasing of the population density of B. brassicae regardless of using 20
cm space of planting and 45 kg Pffeddan.

Keywords