This study was carried out in AL Swaida nursery during 2009 and 2010
seasons to study effect of time and grafting high are on the growth strength of
apple cultivars: Golden delicious، Stark rimson, Starking delicious. Results
showed that Golden de
licious preponderated on the other cultivars in diameter
average (9.06 mm) at 3cm above the grafting area (5cm above soil level). The
study also confirmed that Starking delicious showed significant superiority(p
<0.05) in term of growth strength on the other two cultivars when grafting was
carried at 5cm and 20cm above soil level and the best of leaf area (2862،89cm2)
was observed at 20 cm above the soil level when grafting took place in 31 of
August.
The aim of the research was to study seasonal changes communities of spider mites
and predatory mite Typhlodromus athiasae Porath and Swirski on two apple cultivars
(Golden and red Delicious) from orchards located in two regions: Al-Mokharam and Al
-
Qusayr during the beginning May 2013 and the end of October 2014. The results showed
that the highest density of the spider mites was in two essential period in early and mid
summer, while T.athiasae started its active with started pery active, that started appear in
the may, and the top of its number was in July, The mean density of the mite predator and
spider mites was higher on the red Delicious apple cultivar compared to Golden Delicious
with significant differences, and its presence was higher in the Al-Qusayr region compared
to the Al-Mokharam region with significant differences, also remarked this predator on
some surrounding vegetation in these orchards.
