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By W. W. Thornburg (auth.), Francis A. Gunther (eds.)
That residues of pesticide and different "foreign" chemical compounds in foodstuffs are of outrage to every person all over is abundantly attested via the reception accorded prior volumes of "Residue studies" and by way of the fulfilling en thusiasm, sincerity, and efforts proven by way of the entire members from whom manuscripts were solicited. regardless of a lot propaganda on the contrary, there can by no means be any severe query that pest-control chemical compounds and nutrition additive chemical compounds are necessary to sufficient meals construction, manufacture, advertising, and garage, but with out carrying on with surveillance and clever regulate a few of these thalt persist in our foodstuffs may possibly from time to time conceivably endanger the general public overall healthiness. making sure safety-in-use of those many chemical substances is a dynamic problem, for demonstrated ones are consistently being displaced by means of newly constructed ones extra appropriate to nutrition technologists, pharma cologists, toxicologists, and altering pest-control standards in revolutionary food-producing economies. those issues also are of real challenge to expanding numbers of governmental companies and legislative our bodies world wide, for a few of these chemical substances have ended in a number of mishaps from wrong use. enough safety-in-use reviews of any of those chemical substances persisting into our nutrients stuffs should not easy issues, they usually include the thought of judgments of many people hugely knowledgeable in various advanced organic, chemi cal, foodstuff technological, clinical, pharmacological, and toxicological disciplines.
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Extra info for Residue Reviews / Ruckstands-Berichte: Residues of Pesticides and other Foreign Chemicals in Foods and Feeds / Ruckstande von Pesticiden und anderen Fremdstoffen in Nahrungs- und Futtermitteln
VIII. Steroids, aromatics, and other compounds IX. Vitamins X. Pigments . XI. Minerals XII. Water relations XIII. Endogenous auxins XIV. Nucleic acids . XV. Enzymes XVI. Respiration XVII. Photosynthesis . XVIII. Relationship of chemical structure to activity . XIX. Fate of herbicides in plants XX. Conclusions Summary Resume. Zusammenfassung References . 39 40 44 45 53 55 55 56 56 57 58 63 64 66 69 75 79 81 83 91 93 94 95 96 I. Introduction A discussion! of ch1orophenoxy herbicide-induced biochemical and metabolic changes involves consideration of plant composition, metabolic proc..
Extensive investigation by BERG and MCELROY (1953) indicated that following applications of two to eight ounces of 2,4-D/acre moderate increases in nitrate content in Canada thistle, dandelion, lambs quarters, redroot pigweed, Russian pigweed, and Chlorophenoxy herbicides 47 Russian thistle were apparent. However, no increases in nitrate content were observed in the clovers, brome grass, timothy, alfalfa, and oats. FULTS et al. 5 lb. of sodium salt of 2,4-D/acre. Field grown plants of corn and cucumber were sprayed with 2,4-D at various ages and analyzed at time intervals by BEEVERS et al.
In a similar examination of the effects of 2,4-D on Chlorophenoxy herbicides 43 red kidney beans SMITIi (1948) reported that four hours after 2,4-D application there was a decrease in the soluble sugars and starch-dextrins in the leaves. Three days after treatmem the soluble sugar content had increased, while the starch-dextrins greatly decreased in the leaves of treated plants. In the stems both the soluble sugars and the starch-deXitrins decreased. By the seventh day after the 2,4-D treatment there were only 46 percent of the soluble sugars and seven percent of the starch-deXltrins in the leaves of treated plants compared to the controls.
Residue Reviews / Ruckstands-Berichte: Residues of Pesticides and other Foreign Chemicals in Foods and Feeds / Ruckstande von Pesticiden und anderen Fremdstoffen in Nahrungs- und Futtermitteln by W. W. Thornburg (auth.), Francis A. Gunther (eds.)