@article{article_1656257, title={Physicochemical properties of local diatomaceous earths and their effects of water-suspension treatments against Callosobruchus maculatus (Fabricius, 1775) (Coleoptera: Chrysomelidae) on chickpeas}, journal={Turkish Journal of Entomology}, volume={49}, pages={141–158}, year={2025}, DOI={10.16970/entoted.1656257}, author={Bozkurt, Hüseyin}, keywords={Börülce tohum böceği, diatom tozu, partikül büyüklüğü, sulu bulamaç uygulaması, yüzey alanı}, abstract={This study evaluated the chemical and physical characteristics of two locally sourced diatomaceous earth (DE) formulations (Detech®-s and Detech®-m) alongside the commercial product SilicoSec® to assess their effects on adult mortality, lethal time (LT99), and progeny reduction of the cowpea weevil, Callosobruchus maculatus (Fabricius, 1775) (Coleoptera: Chrysomelidae) in stored chickpeas. Conducted in 2023 at the Entomology Laboratory of Kahramanmaraş Sütçü İmam University, the research found Detech®-m to be the most effective formulation. It achieved 99% mortality in the shortest time (LT99=70.65 hours at 1000 ppm) and the highest progeny suppression (98.1%). This superior performance was attributed to its finer particle size (d50=7.34 µm) and larger surface area (60.45 m²/g), which enhanced adsorption and cuticle disruption. Although SilicoSec® contained a higher percentage of silicon dioxide (85.7% SiO2) than Detech® (80.6% SiO2), its broader particle size distribution and lower Brunauer-Emmett-Teller (BET) surface area reduced its effectiveness. These findings highlight the critical role of particle size and surface area in optimizing DE formulations for C. maculatus control. Overall, our results suggest that refining DE formulations for water-suspension applications can improve stored-legume pest management by enhancing adhesion, uniformity, and persistence while minimizing dust-related health risks.}, number={2}, publisher={Türkiye Entomoloji Derneği}