The study was conducted in the Entomology and Plant Pathology Laboratory, Department of Forestry Sciences, College
of Agriculture and Forestry, University of Mosul, to study and identify the fungi associated with some forest tree seeds.
The identified fungi were Penicillium sp., Aspergillus sp., Rhizopus sp., Fusarium sp., Macrophomina
phaseolina, Phoma sp. and Alternaria sp. The results of the isolation showed that the highest isolation rate was recorded
for the fungus Rhizopus sp. (46.66%) on the seeds of (Pinus eldarica), as well as Penicillium sp. at the same rate on the
seeds of Italian cypress (Cupressus sempervirens). The lowest isolation rate was recorded for the
fungi Alternaria sp., Fusarium sp. and Macrophomina phaseolina (6.66%) on the seeds of Eldarica pine (Pinus eldarica)
Brutia pine (Pinus brutia) and Eastern arborvitae (Biota orientalis). The effect of different concentrations of natural pine
resin showed that the fourth concentration (40%) had a significant effect in inhibiting all fungi. The highest inhibition rate
was recorded for the fungi Alternaria sp. and Fusarium sp. at the fourth concentration, reaching 100% for both fungi. The
lowest inhibition rate was recorded for Macrophomina phaseolina, which was 0% at both the first and second
concentrations, which did not differ significantly from the control treatment |
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