Results 91 to 100 of about 881 (172)

The Degradation of the Natural Pyrethrins in Crop Storage

, 2004
Prolonged storage of harvested Tasmanian pyrethrum crop from Tanacetum cinerariaefolium has resulted in substantial losses of the pyrethrin esters due to the environmental conditions in the storage shed.
Atkinson, BL (15495848), Faber, H (15497576), Blackman, AJ (15477680)   +2 more
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A New Colorimetric Method for the Microdetermination of Pyrethrins

, 1973
A new colorimetric method for the microdetermination of pyrethrins in the presence of pyrogallic acid, an antioxidant and other adjuvants, is described. pyrethrins react with sulphuric acid to yield a colour complex, which has medium absorbance at 263
Bhavanagary, H. M., Ravindranath Gupta, M., Ahmed, S. M.   +2 more
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Upregulation of Metabolic Defense System After Short-term Exposure to Formulated Insecticide [PDF]

Caspian Journal of Neurological Sciences
Background: The rising use of formulated insecticides called for an evaluation of their effects on the substantia nigra defensive mechanisms to identify potential therapeutic windows.
Princewill Sopuluchukwu Udodi, Oluoma Vivian Aneke, Roseline Ebube Udodi   +2 more
doaj  

ToxGuide for pyrethrins and pyrethroids

Reference: Agency for Toxic Substances and Disease Registry (ATSDR). 2003. Toxicological Profile for Pyrethrins and Pyrethroids. Atlanta, GA: U.S.

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Using amplicon sequencing in an ecotoxicological context: Applying species sensitivity distributions to assess the toxicity of biopesticides and a synthetic pesticide on soil microbiota

Ecotoxicology and Environmental Safety
Biopesticides are gaining popularity due to their perceived environmental safety. However, their natural biocidal properties may still pose risks to soil microbial communities.
Alexandre Pedrinho, Alexandros Kanellopoulos, Panagiotis A. Karas, Ofir Ramot, Sotirios Vasileiadis, Dimitrios G. Karpouzas   +5 more
doaj   +1 more source

(Stainton) to pirimiphos‐methyl, spinosad, and combinations of pirimiphos‐methyl and synergized pyrethrins

, 2004
Field control failures with pirimiphos-methyl against the rice moth, Corcyra cephalonica (Stainton), in Weslaco, Texas, USA, led us to investigate the susceptibility of this particular strain to pirimiphos-methyl, spinosad, pyrethrins synergized with ...
Huang, Fangneng, Subramanyam, Bhadriraju, Fangneng Huang, Bhadriraju Subramanyam   +3 more
core   +1 more source

Bovine biowaste derived nanocellulose for pyrethrin stabilization and controlled release

Discover Materials
Sustainable industrial and food production technologies are in demand with the heightened public environmental consciousness. For example, there is growing demand for organic agriculture where synthetic pesticides are replaced with biopesticides.
Samuel M. Mugo, Weihao Lu
doaj   +1 more source

Local adaptation to the native environment affects pyrethrin variability in Dalmatian pyrethrum populations

Frontiers in Plant Science
The insecticidal compound pyrethrin is synthesized in Dalmatian pyrethrum (Tanacetum cinerariifolium (Trevis.) Sch.Bip.; Asteraceae), a plant species endemic to the eastern Mediterranean.
Martina Grdiša, Martina Grdiša, Nina Jeran, Filip Varga, Filip Varga, Zlatko Liber, Zlatko Liber, Ante Turudić, Zlatko Šatović, Zlatko Šatović   +9 more
doaj   +1 more source

Production of pyrethrins in cultured tissues of pyrethrum (Chrysanthemum cinerariaefolium Vis.).

, 1989
Calluses were initiated from elite high-yielding (2.5% pyrethrins) lines of C. cinerariaefolium [Tanacetum cinerariifolium] on MS medium supplemented with 2,4-D at 2 mg and kinetin at 0.5 mg/litre.
Sarma, K. S., Venkataraman, L. V., Rajasekaran, T., Ravishankar, G. A.   +3 more
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The relationship between pyrethrins and the yellow pigmentation in pyrethrum flowers

, 2004
Various clones and varieties of Chrysanthemum cinerariaefolium flowers originating from various localities were used in this study to establish the link between pyrethrins and the yellow pigments in pyrethrum.
Charles A Angedu, Wenwa A Odinga, Angedu, Charles A, Odinga, Wenwa A   +3 more
core   +1 more source