جۆری توێژینه‌وه‌: Original Article

نوسه‌ران

Salahaddin University, Agriculture College, Forestry Department, Erbil, Iraq

پوخته‌

This investigation was conducted during (25/9/2014 to 25/9/ 2015) at Grdarasha
field/ Salahaddin University, Erbil/College of Agriculture with GPS reading of
elevation 419 m. Longitude 36.109 N Latitude 44.018 E. The interaction of seed
size, growing media and period of sampling on growth character of Pinus brutia
Ten. seedling was investigated by using poly bag pots. The studied factors
included three seed sizes (large, medium and small), five growth media (control
(field soil), control+ loamy soil, control+ compost, control+ peat moss, control+
loamy soil + compost+ peat moss) and three periods (25th of March, 25th of June
and September, 2015 ) and their interactions on germination and seedling
performance of Pinus brutia Ten. using factorial experiment based on CRD design
with three replications. The results indicated that the seed size affected significantly
on the studied characters. The highest values of shoot diameter, shoot fresh weight,
root fresh weight, shoot dry weight, root dry weight, and Quality index were (2.74,
2.69, 1.73, 0.94, 0.54, and 0.25) recorded from large seed size respectively. While
in general the period of sampling affected significantly on the seedling characters
(shoot diameter, shoot length, root length, shoot fresh weight, root fresh weight,
shoot dry weight, root dry weight, and Quality index). The highest values of them
were (3.13, 17.18, 68.93, 4.16, 1.98, 1.49, 0.76, and 0.29) recorded from third
period respectively.
On the other hand, the growth media affected significantly on most of the studied
seedling characters. The highest values of (shoot diameter, shoot fresh weight, root
fresh weight, shoot dry weight, and root dry weight) were (3.12, 16.83, 4.69, 2.26,
1.55, and 0.74) recorded from media 3 respectively. Combination treatments
among seed size, growth media and period were also affected significantly on most
of the studied characters. The highest values of (shoot diameter, shoot length, shoot
fresh weight, root fresh weight, shoot dry weight, and root dry weight) were (4.11,
26.50, 10.71, 4.25, 3.88, and 1.84) which recorded from combination treatment of
third period, large seed size and media 3 respectively.

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