تأثير تراكيز حامض الجبرليك و عدد و مدد الرش في نمو شتلات بلوط العفص Quercus infectoria oliv في المشتل

الملخص EN

The present study was conducted in the forest department Nursery college of Agriculture, Summel, during the period from the end of Nov, 2004 to the end of Nov, 2005 to study the effect of different concentration of GA3 number of spraying and periods of foliar application on growth and development of Quercus infectoria.

Oliv seedling in the Nurserg.

The study revealed that the concentration of 45 mg/l of GA3 was superiority in concentrations of GA3 and gave highest average in the stem length, stem dimeter, number of branch and number of leaves [22.82 cm, 3.41 mm, 1.16 branch and 20.83 leaves].

Except the chlorophyll content in leaves.

But the concentration of leromg / L was superior in chlorophyll content in leaves gdving high average 0.578 mg / g number sprayings.

The four spraying were superiority on the two and three sprayings and gave highest average in the stem length, stem dimeter, Number of branches and number of leaves [18.92 cm, 3.01 mm, 1.12 branch and 18.17 leaves] except the chlorophyll content in the leaves.

The two spraying gave high average of chlorophyll content 0.560 mg / g.

Forliar periods the three months were superior on all the periods one month and two months and gave high average characteristic [18.28 cm, 3.04mm, 1.05 branch and 17.45 leaves].

Except the chlorophyll content in the leaves, the one month period was superior on all periods and gave high average 0.547 mg / g in this character.