DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 1-2/2017 str. 51 <-- 51 --> PDF |
once every 6 weeks. Kept in the forest until 8th of September, the traps were checked once every 7 days and a total of 570 counts were applied throughout 19 weeks, the number of I. sexdentatus and T. formicarius adults captured were recorded. Predator insects were taken to special boxes after counting and brought to T. formicarius breeding laboratory. Daily maximum and average temperature data of the study area were determined by interpolation from Kastamonu Meteorology Station. To determine the damage caused by I. sexdentatus after the end of flights, 458 black pine tree were evaluated in the 30 sample plots as large as 400 m2 in December of same year (Figure 2). Sample plots will be taken are randomly selected in stands where traps are placed. The borders of each sample plot was determined through tape measure and trees falling within the borders are numbered and their diameters are measured. Ages of 3 trees in each sample plot were determined. To identify the damage status and dying, dead trees, the trees were examined carefully. Statistical analyses – Statistička analiza All statistical analyses were performed using SPSS® 20.0 for Windows® software. Independent samples t-test was used to determine whether the averages of I. sexdentatus captured by pheromone traps in sunny and shaded aspects in |