Nature of carboxin (vitavax)-derived bound residues in barley plants

Chin, Wei-Tsung; Kucharczyk, N.; Smith, A. E.

doi:10.1021/jf60187a045

Cited by 17 publications

(5 citation statements)

References 3 publications

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“…This supports the view that the extent of binding differs with the type of crops (26). It has been suggested that binding plays a detoxica tion mechanism in plant tissues (2,19). Thus, the herbicidal action cannot be elicited if high levels of binding occur in the sensitive tissues.…”

Section: Methodssupporting

confidence: 80%

Release of Soil-Bound Prometryne Residues Under Different Soil pH and Nitrogen Fertilizer Regimes

Yee¹,

Weinberger²,

Khan³

1985

Weed sci.

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The release of soil-bound 14C-prometryne [N,N′-bis(l-methylethyl)-6-(methylthio)-1,3,5-triazine-2,4-diamine] residues was affected by soil pH, fertilizer treatments (with or without plants), and the crop species wheat [Triticum aestivum (L.) Merr. ‘Marquis’] and soybean [Glycine max (L.) Merr. ‘Maple Presto’]. More of the bound radioactivity was released following large pH changes in the soil than with small deviations. In addition, more 14C-prometryne was found in the extracts of the soil incubated with large pH alterations. Fertilizing with ionic nitrogen sources (NO3– and NH4+) in the absence of plants was also responsible for releasing higher levels of radioactivity than with the nonionic fertilizer urea. These fertilizer-induced differences in release were not apparent when wheat plants were added to the system. Release of the bound radioactivity, however, was plant specific, particularly in the rhizoplane, since soybean roots elicited a greater release in the rhizoplane than wheat roots. Transport and metabolism of these residues were also plant specific.

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Section: Methodssupporting

confidence: 80%

Release of Soil-Bound Prometryne Residues Under Different Soil pH and Nitrogen Fertilizer Regimes

Yee¹,

Weinberger²,

Khan³

1985

Weed sci.

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“…The 14C remaining in the lignin fraction is probably covalently incorporated since it was not released or destroyed by the rigorous AOAC indirect procedure. This has been observed by other investigators for a variety of other pesticides in plants (Chin et al, 1973;Honeycutt and Adler, 1975;Forbes, et al, 1980; Baiba et al, 1979;Still et al, 1981;Khan, 1980;Stratton et al, 1981). The nature of this complex is not known for dieldrin.…”

Section: Resultssupporting

confidence: 67%

Fate of dieldrin in radishes

Stratton¹,

Wheeler²

1983

J. Agric. Food Chem.

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“…It is known from various publications that pesticides may be converted, in soils or plants, to products which are fixed in soil or plant-cell wall complexes and, therefore, are not extractable either with methanol or with other organic solvents. Such residues have been reported for different chemical classes, especially for fungicides or herbicides containing N (Chin et al, 1973;Yih et al, 1968;Bakke et al, 1972), but also for metabolites of organochlorines (Klein et al, 1973;Kilzer et al, 1974). The complex-forming substances were lignins in the case of plants (Chin et al, 1973;Yih et al, 1968); in the case of soil, humic acids seem to be complex formers.…”

Section: Resultsmentioning

confidence: 92%

“…Such residues have been reported for different chemical classes, especially for fungicides or herbicides containing N (Chin et al, 1973;Yih et al, 1968;Bakke et al, 1972), but also for metabolites of organochlorines (Klein et al, 1973;Kilzer et al, 1974). The complex-forming substances were lignins in the case of plants (Chin et al, 1973;Yih et al, 1968); in the case of soil, humic acids seem to be complex formers. The bound residues are released when the complex is destroyed; for soil, alkali has been successful in some cases (Klein et al, 1973;Kilzer et al, 1974).…”

Section: Resultsmentioning

confidence: 92%