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Tribolium castaneum is a damaging pest of stored grains, causing significant losses and secreting lethal quinones, which render the grains unfit for human consumption. Chemical insecticides are the most commonly used approach for control; however, they create insecticide resistance and affect the health of humans, animals, and the environment. As a result, it is critical to find an environmentally friendly pest-management strategy. In this study, two naturally occurring chemicals, benzyl alcohol (BA) and benzoyl benzoate (BB), were investigated for insecticidal activity against T. castaneum using different assays (impregnated-paper, contact toxicity, fumigant, and repellency assays). The results showed that BA had a significant insecticidal effect, with the LC₅₀ achieved at a lower concentration in the direct-contact toxicity test (1.77%) than in the impregnated-paper assay (2.63%). BB showed significant effects in the direct-contact toxicity test, with an LC₅₀ of 3.114%, and a lower toxicity in the impregnated-paper assay, with an LC₅₀ of 11.75%. Furthermore, BA exhibited significant fumigant toxicity against T. castaneum, with an LC₅₀ of 6.72 µL/L, whereas BB exhibited modest fumigant toxicity, with an LC₅₀ of 464 µL/L. Additionally, at different concentrations (0.18, 0.09, 0.045, and 0.0225 µL/cm²), BA and BB both showed a notable and potent repelling effect. BA and BB significantly inhibited acetylcholinesterase, reduced glutathione (GSH), and increased malondialdehyde (MDA) in treated T. castaneum. This is the first report of BA insecticidal activity against the red flour beetle. Also, the outcomes of various assays demonstrated that the application of BA induces a potent bio-insecticidal effect. BA may be a promising eco-friendly alternative to control T. castaneum due to its safety and authorization by the EFSA (European Food Safety Authority). Full article

This article explores a Buddhist text in which numbers set the very stakes for liberation. In 1404, Ngor chen Kun dga’ bzang po (1382–1456), who was to become one of the most esteemed tantric commentators of the Tibetan Sakya tradition, composed his first polemical text, Dispelling Evil Misunderstandings of the Explanation of the Ground of Zung ‘jug Vajradhara. In this early work, Ngor chen grapples with the relationship between the path of perfections and of secret mantra as conduits to liberation. I illuminate the ways in which ritual, exegesis, and pedagogy converge in Ngor chen’s text to reveal larger implications for distinguishing the eleventh and thirteenth grounds (bhūmi) of Buddhahood in fifteenth-century Tibet. In concluding, I highlight the art of differentiation as a fundamental Tibetan scholastic enterprise and briefly engage Ngor chen’s acts of distinguishing sūtra and tantra in conversation with those of key Tibetan predecessors and contemporaries. Full article