Download or read book Studies on Extracts of Pyrethrum Flowers as an Insecticide written by Harry Grandville Walker and published by . This book was released on 1930 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Pyrethrum Flowers written by C. B. Gnadinger and published by . This book was released on 1930 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study on Deterioration of Pyrethrins in Pyrethrum Flowers Under the Different Storage Conditions written by 陳浩佳 and published by . This book was released on 1957 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pyrethrum Flowers written by C.B. Gnadinger and published by Daya Books. This book was released on 2002-04 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pyrethrum Is Regarded As A Section Of The Genus Chrysanthemum, Family Compositae. Besides Their Ornamental Importance, Pyrethrum Flowers Have Been Widely Used As A Source Material For Preparation Of Insecticides. Being Non-Poisonous To Man Pyrethrum Is Particularly Adapted For Controlling Household Insects, However Its Use For Preparing Horticultural Dusts And Sprays, And Livestock Sprays Is No Less Popular. With A Brief Introduction To The Cultivation And Harvesting Of Different Varieties Of Pyrethrum, This Book Is A Valuable Source Of All The Necessary Scientific Information Related To Evaluation Of Pyrethrum (By Chemical As Well As Biological Methods) And Manufacturing Of Various Pyrethrum Products- Powder, Extracts And Sprays, Etc. Also Discussed Are The Effects Of Storage, Light And Heat On Pyrethrum Products, And The Methods Of Detecting Adulteration Of Pyrethrum. There Are 100 Tables Of Scientific Data, Numerous Illustration, An Exhaustive Index And An Extensive List Of About 1000 Reference For Further Information. Chapter 1: Description And History Of Pyrethrum; Definition, Botanical Description, Otehr Species, Early Ues In Persia And Europe, Introduction Into United States, Trade Beliefs, Chapter 2: Commercial Sources Of Pyrethrum; Dalmatian Pyrethrum: Cultivating, Harvesting, Marketing, Crop Statistics, Japanese Pyrethrum: Cultivating, Harvesting, Marketing, Production Statistics, Consumption Of Pyrethrum In United States, Other Sources, Chapter 3: Active Principles Of Pyrethrum; Early Investigations, Work Of Staudinger And Ruzicka, Active Principles Of Japanese Pyrethrum, Isolation Of Pyrethrins By Physical Means, Action Of Pyrethrins On Cold Blooded Animals, Effect Of Pyrethrum On Warm Blooded Animals, Chapter 4: Evaluation Of Pyrethrum By Chemical Methods; Methods Of Staudinger And Harder, Early Methods Of Tattersfied And His Associates, Copper Reduction Method By Gnadinger And Corl, Later Methods Of Martin And Tattersfield, Sell S Acid Method, Ripert S Method, Haller Acree Methods Of Pyrethrin Ii, Gnadinger Corl Acid Methods, Comparison Of Results Obtained With Various Methods, Comparison Of Seil And Gnadinger Corl Methods, Interference Of Altered Pyrethrins With Assay Methods, Presence Of Interfering Compounds In The Flowers, Summary, Chapter 5: Biological Methods For Evaluating Pyrethrum; Dusting Experiments, Tattersfield S Method Using Aphis Rumicis, Hartzell And Wilcoxon S Procedure, Peet Grady Method, Adoption Of Peet Grady Method As An Official Method, Gothard S Criticism Of The Peet Grady Method. Method Of O Kane And Associates, Richardson S Method, The Roach Test, Ueno S Method, Gersdrorff S Method, Nelson S Method, Campbell S Method, Other Method, Chapter 6: Correlation Of Chemical Assays And Biological Tests; Ratio In Which The Two Pyrethrins Naturally Occur, Relative Toxicities Of Pyrethrins I And Ii. Staudinger And Ruzicka On Relative Toxicity, Tattersfield S Work On Toxicity And Pyrethrin Content, Gnadinger And Corl On Toxicity And Pyrethrin Content, Wilcoxon And Hartzell On Relative Toxicity Of Pyrethrins, Mcdonnell S Experiments, Richardson S Work On Toxicity And Pyrethrin I Content, Other Investigations, Chapter 7: Comparative Value Of Commercial Grades Of Pyrethrum; The Open And Closed Flower Controversy, Distribution Of Pyrethrins In The Flower Head, Comparative Value Of Japanese And Dalmatian Pyrethrin, Study Of Dalmatian Pyrethrum, Pyrethrin Content Of Japanese Flowers, Pyrethrin Content Of Kenya Flowers, Flowers From Other Sources, Chapter 8: Effect Of Storage Light And Heat On Pyrethrum Products; Effect Of Short Exposures To Sunlight, Ultra Violet Light And Heat, Tattersfield S Experiments With Pyrethrum Dusts And Antioxidants, Effect Of Prolonged Storage Under Commercial Conditions, Effect Of Cold Storage Of Pyrethrum, Relation Between Maturity Of Flowers And Decomposition In Storage, Effect Of Balling On Loss Of Pyrethrins During Storage, Experiments With Isolated Pyrethrins, Effect Of Antioxidants On Concentrated Pyrethrum Extracts, Effect Of Storage On Pyrethrum Household Sprays, Summary, Chapter 9: Adulteration Of Pyrethrum; Types Of Adulteration, Former Methods Of Detecting Adulteration, Labelling Pyrethrum, Simulation Of High Pyrethrin Content, Chapter 10: Powdered And Ground Pyrethrum; Production Of The Fine Powder, Grinding For Percolation, Chapter 11: Manufacture Of Pyrethrum Extracts; Selecting The Flowers: Standardization, Direct Extraction Process, Manufacture Of Concentrated Pyrethrum Extracts, Effect Of Storage On Concentrated Extracts, Oleoresin Of Pyrethrum, Chapter 12: Pyrethrum Household Insecticides; Correct Pyrethrin Content For Household Insecticides, Proper Oil Base, The Steam Sprayer, Perfume Materials And Other Chemicals, Color Of Household Sprays, Addition Of Rotenone To Household Sprays, Chemical Methods For Assaying Pyrethrum Oil Sprays, Notes On The Analysis Of Pyrethrum Extracts, Substitutes For Pyrethrum, Labelling Household Insecticides, Chapter 13: Pyrethrum Live Stock Sprays; Specifications, Physiological Effect Of Sprays On Stock: Type Of Oil, Repellent Action, Killing Power, Labelling Live Stock Sprays, Chapter 14: Pyrethrum Horticultural Powders Dusts And Sprays; Powders And Dusts, Pyrethrum Soap Sprays, Other Spreaders , Newer Type Of Pyrethrum Oil Soap Spray, Effectiveness Of Pyrethrum Against Various Insects, Pyrethrum Oil Horticultural Sprays, Use Of Rotenone With Pyrethrum, Other Experiments With Pyrethrum Sprays, Chapter 15: Miscellaneous Uses Of Pyrethrum; Mosquito Control, Ant Control, Pyrethrum Smudges, Pyrethrum For Internal Parasites, Minor Uses, Chapter 16: Possible Sources Of Pyrethrum Flowers In The United States; Pyrethrum Investigaitons In Colorado, Effect Of Different Drying Method On Pyrethrin Content, Effect Of Shading The Plant On Pyrethrin Content, Effect Of Different Treatments Previous To Drying Flowers, Variation Of P. Cinerariefolium, Non Variable Botanical Characters, Variable Botanical Characters, Variation In Yield Of Flowers And Pyrethrins, Effect Of Fertilizer On Yield Of Flowers And Pyrethrins, Winter Hardiness Of Pyrethrum, Foreign And Domestic Strains Of Pyrethrins, Test Plots Under Varied Conditions, Effect Of Irrigation On Plant Losses, Effect Of Spacing Interval On Yield Of Flowers, Other Experimental Plantings, Instructions For Growing Of Pyrethrum, Attempts At Threshing Pyrethrum.
Download or read book Studies on Pyrethrum Flowers chrysanthemum Cineraraeifolium as an Insecticide written by J. T. Martin and published by . This book was released on 1933 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies in the Rapid Estimations of Pyrethrins in Pyrethrum Flowers written by J. V. Ojha and published by . This book was released on 1960 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Phytochemical Study of Montana grown Pyrethrum Flowers written by Glenn Herbert Hamor and published by . This book was released on 1947 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study on the Effect of Antioxidants for Pyrethrum Flower written by 盧耀恆 and published by . This book was released on 1957 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pyrethrum written by John Casida and published by Elsevier. This book was released on 2012-12-02 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pyrethrum: the Natural Insecticide covers the papers presented at the 1972 ""International Symposium on Recent Advances with Pyrethrum the Natural Insecticide"" held in conjunction with the American Institute of Biological Sciences Silver Anniversary Meeting at the University of Minnesota, Minneapolis. It deals with all aspects of pyrethrum, including its history, production, chemistry, biochemistry, toxicology, pharmacology, and agricultural applications. The introductory part addresses the early history of pyrethrum, its recognition as a modern insecticide, and its worldwide production. The chemistry and biochemistry parts discuss the composition, isolation, structure, synthesis, biosynthesis, metabolism, and action on enzyme systems of natural pyrethrins extracted from pyrethrum flower. The book also examines the toxicology of pyrethrum and its constituents to mammals, fish, and wildlife, as well as tests for possible teratogenic, carcinogenic, mutagenic, and allergenic activities. Finally, it discusses the domestic and agricultural applications of pyrethrum. Considering its desirable features, researchers find pyrethrum unsurpassed by any type of synthetic organic insecticide and even by the best synthetic analogs or pyrethroids.
Download or read book A Study of the Effect of Storage Heat and Moisture on Pyrethrum written by Walter Sidney Abbott and published by . This book was released on 1919 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pp. 6.
Download or read book A Study of Pyrethrum Flowers Grown on the Squire Valleevue Farm written by Francis Parks and published by . This book was released on 1936 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Pyrethrosin an Insecticidally Inert Constituent of Pyrethrum Flowers written by William Alexander Stanton and published by . This book was released on 1941 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pyrethrum Flowers written by John E. Casida and published by . This book was released on 1995 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: For over 160 years, pyrethrum has been safely and effectively used as a pesticide the world over. The flowers of this daisy, which contain a mixture of pleasant-smelling esters called the pyrethrins, have highly unusual insecticidal properties. Unique in their ability to repel most insect pests while posing virtually no threat to the environment, pyrethrins have been the subject of great interest to a wide variety of scientists. This book presents for the first time in over twenty years an in-depth look at the many issues surrounding the use of pyrethrins. John E. Casida, a world-renowned authority on the subject, has assembled a group of distinguished contributors to discuss topics ranging from the relationship between pyrethrum and synthetic pyrethroids to cultivation to metabolism to mammalian and environmental toxicology. Along the way, the history of pyrethrum flowers and pyrethrins, the chemistry of active pyrethrin ingredients, the mode of action and resistance, the control of pests, and residues and tolerances are also expertly treated. As safety aspects of pesticides are reevaluated with regard to current regulatory, social, and political implications, pyrethrum has increasingly been seen as the prototype for safe, natural pesticides. Engaging and profusely illustrated, Pyrethrum Flowers is the perfect introduction to the most important natural botanical pesticide. It will appeal to all scientists concerned with pesticides, including botanists, geneticists, biochemists, entomologists, and ecologists.
Download or read book Harvesting Pyrethrum written by Arthur Frederick Sievers and published by . This book was released on 1941 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Plant Growth Regulators and Phytonutrients on Pyrethrum written by Alaulhasan Abad Farooqi and published by LAP Lambert Academic Publishing. This book was released on 2010-06 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present dissertation on the topic "Effect of plant growth regulators and phytonutrients on flower and pyrethrins yield in Chrysanthemum cinerariaefolium (Pyrethrum)" was aimed to study the effect of plant growth regulators and phytonutrients on growth, flower yield, enzymes activity, protein and proline content, endogenous hormones (IAA and ABA) and pyrethrins concentration of C. cinerariaefolium using standard procedures. Seed germination studies were conducted to improve seed germination. It can be concluded from the results that application of plant growth retardants (ethrel, chlormequat chloride and paclobutrazol) at appropriate dose significantly increased flower yield and pyrethrins concentration in pyrethrum. Plant growth regulators, especially ethrel is suitable for minimizing lodging in pyrethrum. Plant growth and pyrethrins yield was highest at P75 kg h-1 level and Zn 10 kg ha-1 in north Indian plains. Ethrel, GA3 and pre-chilling treatments improved germination percentage and germination speed in laboratory and glass house conditions. These treatments can alleviate the inhibitory effect of high temperature on pyrethrum seed germination.
Download or read book Pyrethrum Flowers Supplement 1936 1945 written by Charles B. Gnadinger and published by . This book was released on 1945 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pyrethrum Post written by and published by . This book was released on 1985 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
