Diatom toprağı, Slicosec'in Rhyzopertha dominica (F.) (Coleoptera:Bostrichidae)'nın ölüm oranı ve ergin çıkışlarına etkileri
Özet
Master ThesisTHE EFFECTIVENESS OF SILICOSEC, DIATOMACEOUS EARTH ON THE LESSER GRAIN BORER,Rhyzopertha dominica (L) (COLEOPTERA: BOSTRICHIDAE)Sevilay ALTINTOPAnkara UniversityGraduate School of Natural and Applied SciencesDepartment of Plant ProtectionSupervisor: Asst. Prof. Dr. Ahmet Güray FERİZLİIn this research, different rates (0, 250, 500, 1000, 1500, 2000, 2500 and 3000 mg SilicoSec/kg wheat) ofdiatomaceous earth mixed with wheat were evaluated against adult stage of Rhyzopertha dominica for 3 weekexposure period at 55% r.h. and 10 adult/vial insect density. In these tests, mortalities were determined at theend of three week of exposure, whereas F1 adults production were determined at 7 weeks after mortalityobservation. Besides these experiments, a series of experiments were performed at the rate of 0, 250, 500, and1000 mg SilicoSec/kg wheat for three moths exposure period to the adult stage of R. dominica, at the end ofexposure period mortality adult progeny were determined.At the different rates (0, 250, 500, 1000, 1500, 2000, 2500 and 3000 mg SilicoSec/kg wheat) of SilicoSec 3weeks of exposure experiments, mortality and F1 adults of R. dominica was significantly changed by the ratesof diatomaceous earth (P=0.000). In untreated wheat mortality was found to be 5% and mortalities in 250,500, 1000, 1500, 2000, 2500 and 3000 mg/kg wheat applications were found to be 30.7%, 79.4%, 94.5%,96%, 98.5%, 99.5% and 100%, respectively. F1 adults in untreated wheat was found to be 364 adults per vialand F1 adults in 250, 500, 1000, 1500, 2000, 2500 and 3000 mg/kg wheat applications were found to be229.5, 140.5, 66.3, 42.8, 10.6, 7.4 and 6 adults per vial, respectively.In the three moths exposure experiments, mortality and F1 adults of R. dominica was significantly changed bythe rates (0, 250, 500 and 1000 mg SilicoSec/kg wheat) of diatomaceous earth (P=0.000). In untreated wheatmortality was found to be 0.34% and mortalities in 250, 500 and 1000 mg/kg wheat applications were foundto be 2.04%, 42.93%, and 100%, respectively. F1 adults in untreated wheat was found to be 794 adults per vialand F1 adults in 250, 500 and 1000 mg/kg wheat applications were found to be 230.7, 36.2 and 8.2 adults pervial, respectively