The importance of research being deals with the problem of
significant environmental concern the pollution of the plant , soil
and air component lead as a result of rapid industrial development
since the twentieth century . Was selected Eucalyptus
for several
considerations , including the widening spread and being one of
the bumpers wind that might ease the arrival of pollutants in the
atmosphere to regions far geographically . was selected several
sites of Homs in order to examine the content of the soil and
leaves Eucalyptus from a bullet was found that the concentration
of lead element in the plant was caused by air pollution , where not
shown the existence of relations clear engagement between the
content of soils of lead ( for a total and disposable absorption )
with the lead content of the plant . Ranged concentration of lead
overall in the soil between 1.98 ppm ( through Homs - peaceful )
and 72.47 ppm ( Highway Tartus in the south ) , and the average
of 4.857 ppm, did not exceed the concentration of lead in the
samples studied , both inside the city or outside the normal limit
and values lead stainless absorption in the soil ranged from ppm
(19.02- 0.02), ranged lead concentration in the plant between
2.01ppm and 10.35ppm and this concentration of lead element
within the permissible limits but with time become toxic showing a
lack of liaison relationships between the component lead either in
the soil or plant with the CaCO3 and Active lime. Finally we can
say that the contamination of the plant within the city is higher than elsewhere because of the busy traffic . Add to that the increase in soil lead content available led to increase the concentration of lead in Eucalyptus,leaves
In this research, the occurrence of Glycaspis brimblecombei Moore (Hemiptera:
Psylloidea: Aphalaridae) was recorded for the first time on Eucalyptus camaldulensis
(Myrtaceae) leaves in Syria. Where collected from the leaves and shoots of young and
old
trees of eucalyptus from Lattakia province in June 2015 in three sites. The morphological
characters examined and compared with the specialized keys for this species. The results
showed that the highest average for psyllid egg masses was in Bustan AlBasha on the
lower surface of the leaves and amounted to 5.80±2.00 mass, had the highest average
number of eggs in the same location and on the lower surface also reached 65.80±47.97
eggs / Leaf. The highest average number of nymphs under the Lerp in Bustan AlBasha on
the lower surface of the leaves as stage as follows: L1: 18.4±9.51, and L2: 9.60±3.32, and
L3: 6.40±0.92, while L4: 2.80±1.74 on the upper and lower surfaces. The highest average
number of psyllid nymphs without white Lerp was for the first nymph L1: In Shahd
Alaasal site on the Lower surface 3.40±0.87, and L2: at the same previous location on the
upper surface of 5.80±2.43, and L3: in Bustan AlBasha site on the Lower surface
2.80±0.58, and L4: in Shahd Alaasal and Bustan AlBasha 0.20±0.20 on the upper and
lower surface. The highest average number of adult in the site Bustan AlBasha on the
upper surface of 1.40±1.16, and the lowest in the site Shahd Alaasal on the upper surface
of 0.20±0.20.
This study aims to recognize some growth characteristics of
Eucalyptus camaldulensis and the effect of climate factors on trees
growth and development. Negative trends were detected in annual
rainfall according to meterological data taken from Homs station.
