Soil Adsorption of Herbicides, Adsorption of Serveral Pre-emergence Herbicides by Hawaiian Sugar Cane Soils

Hilton, H. W.; Yuen, Q. H.

doi:10.1021/jf60127a023

Cited by 71 publications

(45 citation statements)

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“…On the other hand, of the amounts initially adsorbed on Melfort loam, about of linuron and chlorbromuron, 507o of diuron and metobromuron,2'77a of monolinuron and 8Vo of monuron were still adsorbed even after five rinses (Fig. 3C) On the basis of the ft and Q values at C : l, the general order of the increasing adsorption of the seven urea herbicides o-n the five prairie soils was similar to that reported by Hilton and Yuen (1963) for Hawaiian soils and Hance (1965), Briggs (1969), and Osgerby (1970) for several British soils. The inverse relationship between the water solubility of the six phenylureas and their extent ol adsorption was in agreement only with the earlier observations of Hilton and Yuen (1963).…”

supporting

confidence: 83%

“…The adsorption of a number of urea herbicides has been studied in a variety of soils. However, the adsorptive behavior of most of these herbicides has been studied either singly or in combination with selected members of other classes of herbicides, with only a few studies on the urea herbicides as a group (Hilton and Yuen 1963;Hance 1965;Briggs 1969;Osgerby 1970 Hilton and Yuen (1963) and Hance (1967) 7)E itr ts: For personal use only. (Fig.…”

mentioning

confidence: 99%

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Adsorption and Desorption of Urea Herbicides on Soils

Grover¹

1975

Can. J. Soil. Sci.

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confidence: 83%

mentioning

confidence: 99%

Adsorption and Desorption of Urea Herbicides on Soils

Grover¹

1975

Can. J. Soil. Sci.

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“…The adsorptive properties of soil chars were first proposed by Hilton and Yuen (1963) who reported that the sorption of substituted urea and S-triazine herbicides by Hawaiian sugarcane soils which had routinely been burned to remove cane trash remained high after removal of soil organic matter by hydrogen peroxide. Sorption of these herbicides was reduced markedly, however, after igniting the soils.…”

Section: Introductionmentioning

confidence: 99%

Predominance of Char Sorption over Substrate Concentration and Soil pH in Influencing Biodegradation of Benzonitrile

et al. 2006

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Incomplete combustion of field crop residues results in the production of char, a material rich in charcoal-type substances. Consequently, char is an effective adsorbent of organic compounds and when incorporated into soil may adsorb soil-applied pesticides, thereby altering their susceptibility to biodegradation. We investigated the relative importance of char, soil pH and initial substrate concentration in biodegradation of pesticides in soils by measuring the biodegradation of benzonitrile in soil as a function of soil char content (0% and 1% by weight), initial benzonitrile concentration (0.1, 1.06, and 10.2 mg l(-1)) and soil pH (5.2, 6.9 and 8.5). Preliminary experiments revealed that wheat straw char had a much greater benzonitrile sorption capacity than did soil to which the char was added. The extent of benzonitrile degradation decreased as initial benzonitrile concentration increased in both buffer solution and soil slurry. In contrast, the degradation increased as initial benzonitrile concentration increased in char-amended slurry. In un-amended soil slurry, the benzonitrile degradation was lower at pH 5.2 than at pH 6.9 or 8.5, but in char-amended soil slurry the degradation was not affected by pH, again presumably due to adsorption of benzonitrile by the char. Adsorption by soil char appears to be more important than either initial substrate concentration or soil pH in controlling benzonitrile degradation in char-amended soil slurry. The presence of crop residue-derived chars may alter pesticide degradation patterns normally observed in soils and thus significantly affect their environmental fate.

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“…The ability of chars binding organic contaminants such as the precursor of atrazine, s-triazine, was stated by Hilton and Yuen ( 1963 ). They discovered that the retained sorptivity of many Hawaiian soils for s-triazines was a result of the soil chars arising from burning of sugarcane trash.…”

Section: Applicationsmentioning

confidence: 99%