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Article
Insecticidal Action of D.D.T
A STUDY of the insecticidal properties of D.D.T. (αα-bis (4-chlorphenyl)-βββ trichlorethane; I, X=Cl) and its analogues, carried out in this laboratory, has led to a working hypothesis on their mode of action whi...
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Article
Dehydrohalogenation of p,p'-D.D.T
THE dehydrohalogenation of 2,2-bis (p-chloro-phenyl)-l,l,l-trichloroethane (p,p×D.D.T.)to form 2, 2-bis (p-chlorophenyl)-l,l-dichloroethylene (D.D.X.), readily brought about by refluxing with alcoholic alkali1, h...
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Article
Dehydrochlorination and Insecticidal Action in Chlorinated Hydrocarbons
EARLY in the history of D.D.T., Martin and Wain1 suggested that easy dehydrochlorination is necessary for insecticidal action in chlorinated hydrocarbons. This generalization has since been extended to benzene he...
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Article
Aryloxyaliphatic Acids as Systemic Fungicides
A SYSTEMIC fungicide may be defined as a fungicidal compound which is readily translocated as such in the plant, rendering the tissues penetrated toxic to fungi. It is immaterial whether the fungus is killed a...
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Article
Antagonistic Action of Certain Stereo-isomers on the Plant Growth-regulating Activity of their Enantiomorphs
IT has been recently demonstrated that the two stereoisomeric forms of certain α-aryloxypropionic acids can differ widely in their capacity to induce growth responses in plants. Thus, for example, the (+)-form...
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Article
β-Oxidation of ω-Phenoxyalkylcarboxylic Acids in the Flax Plant
SINCE the classical work of Knoop1 on the β-oxidation of long-chain fatty acids within the animal body, numerous investigations have been carried out in this field. It is now established that such an oxidative me...
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Article
Crop Protection: Symposium in Ghent
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Article
Chemistry of Plant Growth Substances
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Article
Plant Growth-Regulating Substances
Plant Growth Substances
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Article
Dr. William Goodwin
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Article
Alpha-Oxidation of Omega-(2:4-Dichlorophenoxy)alkanenitriles and 3-Indolylacetonitrile within Plant Tissues
BIOLOGICAL and chemical investigations carried out here on the plant growth-regulating activity of ω-aryloxyalkanecarboxylic acids have established the importance of β-oxidation as a mechanism by which these a...
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Article
Fungistatic Properties of Plant Tissues: Fungistatic Properties of Leaf Exudates
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Article
Fungistatic Properties of Plant Tissues: An Antifungal Substance from the Tissues of Vicia faba
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Article
New Plant Growth-Substances with Selective Herbicidal Activity
THE pronounced effect on plant growth-regulating activity that results from the introduction of chlorine atoms into certain positions of the benzene ring in benzoic and phenoxyacetic acids is well known1, and som...
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Article
[Book Reviews]
Plant Growth Substances
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Article
Occurrence of 3-Indolylacetic and 3-Indolecarboxylic Acids in Tomato Crown—Gall Tissue Extracts
A NUMBER of publications1 report high auxin activity in extracts of tumour tissue initiated by the crown-gall organism, Agrobacterium tumefaciens, and indirect evidence indicates a high rate of auxin metabolism i...
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Article
α-Oxidation of Indoleacetonitrile
IT is known that certain plant tissues can convert 3-indolylacetonitrile to the highly active plant growth substance 3-indolylacetic acid1–3 and we have shown that other plant tissues are able to bring about an α...
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Article
3:5-Dihalogeno-4-Hydroxybenzonitriles as Herbicides: 3 : 5-Dihalogeno-4-Hydroxybenzonitriles : New Herbicides with Molluscicidal Activity
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Article
Selective Herbicidal Activity of Iodides
INVESTIGATIONS carried out here with the selective herbicide ioxynil (3,5-diiodo-4-hydroxybenzonitrile)1 have shown its mode of action to be complex. The compound inhibits the Hill reaction in isolated chloroplas...
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Article
Identification of the Yellow Lupin Growth Inhibitor as (+)-Abscisin II ((+)-Dormin)
THE presence of an abscission-accelerating substance in the pods of yellow lupin (Lupinus luteus var. Weiko II) was deduced by Van Steveninck1. He was able to show that the whorls of fertilized pods at the base o...
