sdu faculty of forestry journal special edition 2009 - Orman Fakültesi

SDÜ ORMAN FAKÜLTESİ DERGİSİ
The aim of the present study was to investigate the frequency of dieback in
Manna ash plantations located in Dutlukır and near Altınapa Dam in Konya
province.
MATERIALS AND METHODS
Manna ash plantations located in Dutlukır and near Atınapa Dam in Konya
province were investigated in April 2009. The origin of the trees in the study areas
is not known.
The plantation site near Altınapa Dam, approximately 16.5 km west of the city
of Konya, covers 6.4 ha on a minor slope facing the dam at an altitude of 1280 m
a.s.l. The 7.2–hectare plantation in Dutlukır is located on flat terrain, 1075 m a.s.l.,
approximately 9 km southwest of Konya. In Konya region, winters are cold and
snowy and summers are hot and dry. In the study area, annual precipitation ranges
from 300 to 400 mm (Fig. 1). The average number of days with precipitation per
month is 9-11 from December to May, and 2-7 from June to November. Between
July and September there are only 2-3 rainy days per month. During these three
summer months the total precipitation is below 30 mm. The average annual
temperature is +11.4˚C (Anonymous, 2009).
Average precipitation
(mm)
45
40
35
30
25
20
15
10
5
0
1 2 3 4 5 6 7 8 9 10 11 12
121
Months
Average precipitation (mm) Average Temperature (°C)
Figure 1: Monthly means for precipitation and temperature in Konya 1975-2007.
The plantations were investigated using a systematic sampling strategy.
Condition of the shoots, characteristics of the cankers and lesions, tree height and
stem diameter at root collar, and signs of insect attacks were recorded for every 4 th
tree in Dutlukır and for every 6 th tree in Altınapa plantation. Shoot and bark
25
20
15
10
5
0
-5
Average temperature (°C)