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Adsorption, Mobility, and Microbial Degradation of Glyphosate in the Soil
Abstract
Glyphosate [N-(phosphonomethyl)glycine] was readily bound to kaolinite, illite, and bentonite clay and to charcoal and muck but not to ethyl cellulose. Fe+++ and Al+++-saturated clays and organic matter adsorbed more glyphosate than Na+ or Ca+-saturated clays and organic matter. Glyphosate appears to be bound to the soil through the phosphonic acid moiety as phosphate in the soil competed with 14 C-glyphosate for adsorption sites. Glyphosate mobility in the soil was very limited and was affected by pH, phosphate level, and soil type. The 14 C-glyphosate was biodegraded in soil to 14 CO 2 possibly by co-metabolism. Potentiometric titrations of the compound gave pKa values of 2, 2.6, 5.6, and 10.6.
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Cited by
Williams, G. M., Kroes, R., & Munro, I. C. (2000) · Regulatory Toxicology and Pharmacology · doi:10.1006/rtph.1999.1371 · Cited by 864
RetractedEcotoxicological Risk Assessment for Roundup® Herbicide
Giesy, J. P., Dobson, S., & Solomon, K. R. (2000) · Reviews of Environmental Contamination and Toxicology · doi:10.1007/978-1-4612-1156-3_2 · Cited by 912
Metadata
- Authors
- Sprankle, P., Meggitt, W. F., & Penner, D.
- Venue
- Weed Science
- Publisher
- Cambridge University Press (CUP)
- Published
- 1975-05
- Volume
- 23
- Issue
- 3
- Pages
- 229-234
- ISSN
- 0043-1745 (ISSN-L)
- 1550-2759
- OpenAlex
- W2507541831
- Cited by
- 481
- References
- 0
- FWCI
- 10.56
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Adsorption, Mobility, and Microbial Degradation of Glyphosate in the Soil. https://app.cochat.ai/papers/10.1017/s0043174500052929
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- Sprankle, P., Meggitt, W. F., & Penner, D. (1975). Adsorption, Mobility, and Microbial Degradation of Glyphosate in the Soil. Weed Science. https://doi.org/10.1017/s0043174500052929
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
