Results 311 to 320 of about 117,587 (325)

Mount St. Helens ash: a natural insecticide

Canadian Journal of Zoology, 1981
Dry volcanic ash from the May 18, 1980 eruption of Mt. St. Helens was lethal to insects. Volcanic ash induced mortality was due to physical rather than chemical properties of the ash. Water loss due to cuticular abrasion and excessive salivation during grooming were the principle causes of death.
John S. Edwards, Lawrence M. Schwartz
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ReviewDiatomaceous earths, a group of natural insecticides

Journal of Stored Products Research, 1998
Abstract Diatomaceous earth (DE) is a geological deposit consisting of the fossilised skeletons of numerous species of siliceous marine and fresh water unicellular organisms, particularly diatoms and other algae. Many of these fossilised sedimentary layers originated at least 20 million years ago in the lakes and seas of the Eocene and Miocene epochs.
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Marine Natural Products as Prototype Insecticidal Agents

Journal of Agricultural and Food Chemistry, 1997
In an attempt to characterize additional structural classes that could serve as prototypes for insecticides, 26 structurally diverse marine compounds were examined for insecticidal activity in a di...
Tony L. Perry, Margaret A. Wideman, Mark T. Hamann, and Scott P. Wilkins, John T. Greenplate and, Khalid A. El Sayed, D. Charles Dunbar   +6 more
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Tropical Forests as Sources of Natural Insecticides

2005
Introduction 146 Species of Meliaceae as Sources of Natural Insecticides 146 Melia volkensii 147 Melia azedarach 147 Azadirachta excelsa 150 Trichilia Americana 150 Aglaia species 151 Species of Annonaceae as Sources of Natural Insecticides 152 Annona squamosa 152 Clove (Myrtaceae) and Other Essential Oil-Bearing Plants as Sources of ...
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Insecticides in Nature, Naturally Occurring Insecticides in Cruciferous Crops

Journal of Agricultural and Food Chemistry, 1964
E. P. Lichtenstein, D. G. Morgan, C. H. Mueller   +2 more
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Chemists synthesize natural insecticide in 16 steps

C&EN Global Enterprise, 2019
Although chemists have known about the molecule perseanol since the 1990s, no one has completed a total synthesis of the complex, polycyclic insecticide, until now. California Institute of Technology chemistry professor Sarah E. Reisman and graduate students Arthur Han and Yujia Tao constructed perseanol in just 16 steps, starting from a commercially ...
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Responses of Arthropod Natural Enemies to Insecticides

Annual Review of Entomology, 1975
B. A. Croft, A. W A. Brown
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Insecticides of Natural Origin

Phytochemistry, 1998
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Modern Insecticides and the Balance of Nature

Nature, 1951
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Insecticide Metabolism, Nature of Certain Carbamate Metabolites of Insecticide Sevin

Journal of Agricultural and Food Chemistry, 1964
H. W. Dorough, J. E. Casida
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