EFFICACY OF SOME BIOAGENTS, PLANTS AND HUMEX IN CONTROLLING TYLENCHULUS SEMIPENETRANS ON OLIVE IN EGYPT

doi:10.21608/bces.2008.426658

EFFICACY OF SOME BIOAGENTS, PLANTS AND HUMEX IN CONTROLLING TYLENCHULUS SEMIPENETRANS ON OLIVE IN EGYPT

Document Type : Original Article

10.21608/bces.2008.426658

Abstract

This study was conducted to determine the susceptibility
of seven olive cultivars to citrus nematode, control citrus nematodes;
Tylenchulus semipenetrans under both greenhouse and field
conditions. In addition to determine the olive yield (cv. Picual) in
Egypt.
Data showed that picual cultivar is the most susceptible cultivar;
whereas Dolsy cultivar is the least susceptible cultivar to the citrus
nematodes under greenhouse conditions.
Seven treatments (suspension of Psudomonas fluorescens,
suspension of Arthrobotrys oligospora, suspension of dry peels
powder of Punica granatum, suspension of dry leaves powder of
Mentha piperita, suspension of dry leaves powder of Eucalyptus
globules, at different concentrations, humex (10%) and oxamyl) were
used to control T. semipenetrans under both greenhouse and field
conditions on olive.
The most effective treatments in controlling citrus nematodes; T.
semipenetrans are humex (10%) and Psudomonas fluorescens
whereas the least effective is suspension of dry peels powder of
Punica granatum under both greenhouse and field conditions.
Humex (10%) was more effective in reducing numbers of
developmental stages ,egg laying females, number of eggs/ egg-mass
and number of second stage larvae, whereas the suspension of dry
EFFICACY OF SOME BIOAGENTS, PLANTS224
peels powder of Punica granatum was the least effective under both
greenhouse and field conditions.
Under greenhouse conditions all treatments led to increase the
total fresh weight of shoots and roots of olive seedlings especially at
the highest concentration. Using three times of application every week
of each treatment achieved high decrease in nematodes population in
both roots and soil under both greenhouse and field conditions. Also,
increased the yield of olive under field conditions.

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