In total, 29 compounds from sweet wormwood (Artemisia annua L.) oil were identified using gas chromatography-mass spectrometry. The five active components were D-camphor, linalool, cineole, α-terpineol, and L(-)-borneol. The effectiveness of A. annua oil, as well as d-camphor, linalool, cineole, α-terpineol, and L(-)-borneol, as fumigants, contact insecticides, and repellents, were tested on th...

I read with great interest the report by Bessac et al. entitled: “Transient receptor potential ankyrin 1 antagonists block the noxious effects of toxic industrial isocyanates and tear gases (1).” In the introduction the authors mention a variety of environmental exposure scenarios, including Bhopal, India, and a large-scale pesticide spill that occurred on the Sacramento River in Northern Calif...

Metam sodium (metam) is a widely used soil fumigant. Combined application of metam and other available fumigants is intended to produce synergic pesticidal effects for a broad spectrum of pest control in soil fumigation. This study aimed to test the compatibility of metam with the halogenated fumigants 1,3-dichloropropene (1,3-D), chloropicrin, methyl bromide, methyl iodide and propargyl bromid...

During our screening program for agrochemicals from Chinese medicinal herbs and wild plants, the essential oil of Carum carvi fruits was found to possess strong contact toxicity against Sitophilus zeamais and Tribolium castaneum adults, with LD₅₀ values of 3.07 and 3.29 μg/adult, respectively, and also showed strong fumigant toxicity against the two grain storage insects with LC₅₀ values of 3.3...

To overcome the environmental impacts of soil fumigant use, emission reduction strategies such as tarping can be adopted. There is a need to experimentally quantify the effectiveness of such strategies, preferably in a low-cost manner. We report the design and initial testing of a laboratory soil chamber approach for quantifying the soil distribution and emissions of fumigants from bed-furrow a...

1. The mode of action of phosphine and development of insect resistance. 2. The corrosion of copper by phosphine. 3. The mode of action of methyl bromide and its relationship to insect resistance. 4. Residues of methyl bromide and the reaction products formed in treated foods. In this conununication are given some results from one of these studies, i.e. residues of methyl bromide occurring in f...