Effect of Some Abiotic Factors on Migration of Sunn Pest (Eurygaster integriceps Put.) (Hemiptera: Scutelleridae) from Aestivation Sites to Overwinteing Sites
Effect of Some Abiotic Factors on Migration of Sunn Pest (Eurygaster integriceps Put.) (Hemiptera: Scutelleridae) from Aestivation Sites to Overwinteing Sites
Mahmut Islamoglu
ABSTRACT
Although there are many pests of wheat plants, Sunn pest Eurygaster integriceps Put. (Heteroptera; Scutelleridae) is the most important pest in Turkey and West Asian countries. In our country, it causes important economic losses in wheat with the epidemics it has made from time to time. E. integriceps spends most of its life in overwintering sites. It is thought that knowing the wintering characteristics of Sunn pest will provide important advantages in the fight against this pest. In this study; The effects of air temperature, soil temperature, humidity, soil moisture and photoperiod on the migration of Sunn pest from aestivation sites to overwintering sites were investigated in 2020 and 2021. For this purpose; air temperature, soil temperature, humidity, soil moisture and photoperiod values were recorded with the HOBO device in the overwintering sites. According to the findings; The migration of Sunn pest showed positive or negative correlations with air temperature, soil temperature, humidity, soil moisture and photoperiod, respectively. According to the results of the multiple regression analysis, it was determined that the equation Y = -132.796 + 02.233 T + 11.646 P [where Y= Sunn pest (Number), T= Temperature, P= Photoperiods (H)] is appropriate. This model was determined to have the best correlation (r = 0.755, r2 = 0.571, n = 122, P = 0.000). Moreover; It is determined that air temperature and photoperiod affect the migration of Sunn pest positively, while other parameters are not statistically significant.
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