Hostname: page-component-6bf8c574d5-qdpjg Total loading time: 0 Render date: 2025-02-17T15:52:42.106Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of Soil PH on Fluridone Activity and Persistence as Determined by Chlorophyll Measurements

Published online by Cambridge University Press:  12 June 2017

Patrick J. Shea  and
Jerome B. Weber
Patrick J. Shea
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
Jerome B. Weber
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
Get access Rights & Permissions [Opens in a new window]

Abstract

Residue levels of fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl)phenyl]-4(1H)-pyridinone} in soil were determined indirectly by measuring the chlorophyll content of wheat (Triticum aestivum L.) grown on a Norfolk sandy loam (Typic paleudult; fine loam, siliceous, thermic) 14, 22, 39, and 66 days after a preemergence application of the herbicide. The half-life for 0.22 and 0.45 kg/ha of fluridone was estimated to be 18 days. Phytotoxicity increased with increasing pH in newly-treated soils and in soil sampled 14 days after treatment. Higher chlorophyll levels in wheat grown in soil sampled 39 days after fluridone application indicated a decrease in biologically-active herbicide. Soil removed from the field following later cultivation produced small reductions in chlorophyll at pH 4.0 and 5.2, but at pH 7.0 significant fluridone activity was still present in the soil after 66 days. Cultivation may have increased the surface concentration of the herbicide.

Keywords

Bioassayresidual activityhalf-life
Type
Research Article
Information
Weed Science , Volume 31 , Issue 3 , May 1983 , pp. 347 - 350
Copyright
Copyright © 1983 Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Albritton, R. and Parka, S. J. 1978. Studies evaluating the site of fluridone uptake by fourteen crop and ten weed species. Proc. South. Weed Sci. Soc. 31:253–259.Google Scholar
2. Anderson, C. I. and Robertson, D. S. 1960. Role of carotenoids in protecting chlorophyll from photodestruction. Plant Physiol. 35:531–534.CrossRefGoogle ScholarPubMed
3. Anderson, L.W.J. 1978. Light requirement of efficacy of fluridone in preventing growth of American pondweed (Potamogeton nodosus Poir.) and sago pondweed (P. pectinatus L.). Abstr., Weed Sci. Soc. Am. p. 50.Google Scholar
4. Arnon, D. I. 1949. Copper enzymes in isolated chloroplasts: polyphenoloxidases in Beta vulgaris . Plant Physiol. 24:1–15.CrossRefGoogle ScholarPubMed
5. Banks, P. A. and Merkle, M. G. 1979. Soil detection and mobility of fluridone. Weed Sci. 27:309–312.Google Scholar
6. Bartels, P. G. and Watson, C. W. 1978. Inhibition of carotenoid synthesis by fluridone and norflurazon. Weed Sci. 26:198–203.Google Scholar
7. Devlin, R. M., Saras, C. N., Kisiel, M. J., and Kostusiak, A. S. 1978. Influence of fluridone on chlorophyll content of wheat (Triticum aestivum) and corn (Zea mays). Weed Sci. 26:432–434.Google Scholar
8. Harter, R. D. and Aldrichs, J. L. 1969. Effects of acidity on reactions of organic acid amines with montmorillonite clay surfaces. Soil Sci. Soc. Am. Proc. 33:859–863.Google Scholar
9. Rafii, Z. E., Ashton, F. M., and Glenn, R. K. 1979. Metabolic sites of action of fluridone in isolated mesophyll cells. Weed Sci. 27:422–425.CrossRefGoogle Scholar
10. Savage, K. E. 1978. Persistence of fluridone in soil. Proc. South. Weed Sci. Soc. 31:270.Google Scholar
11. Shea, P. J. and Weber, J. B. 1980. Effect of pH and soil constituents on the persistence and availability of fluridone. Proc. South. Weed Sci. Soc. 33:240–246.Google Scholar
12. Shea, P. J. and Weber, J. B. 1981. Fluridone behavior as influenced by soil clay, organic matter and pH. Abstr., Weed Sci. Soc. Am. pp. 131–132.Google Scholar
13. Waldrep, T. W. and Taylor, H. M. 1976. 1-methyl-3-phenyl-5 [3-(trifluoromethyl)-phenyl]-2-4 (1H)-pyridinone, a new herbicide. J. Agric. Food Chem. 24:1250–1251.Google Scholar
14. Weber, J. B. 1977. Soil properties, herbicide sorption, and model soil systems. Pages 59–72 in Truelove, B. (ed.), Research Methods in Weed Science, 2nd ed., South. Weed Sci. Soc., Auburn, AL.Google Scholar
15. Weber, J. B. 1980. Adsorption of buthidazole, VEL 3510, tebuthiuron, and fluridone by organic matter, montmorillonite clay, exchange resins, and a sandy loam soil. Weed Sci. 28:478–483.CrossRefGoogle Scholar
16. Weber, J. B. 1980. Ionization of buthidazole, VEL 3510, tebuthiruon, fluridone, metribuzin, and prometryn. Weed Sci. 28: 467–474.Google Scholar
17. Webster, H. L., Addison, D. A., Banks, J. C., Keaton, J. A., McNeill, K. E., Hicks, R. D., and Nicholson, J. F. 1977. Field performance of EL-171 for weed control in cotton. Proc. South. Weed Sci. Soc. 30:103–112.Google Scholar
18. Wills, G. D. 1977. Effect of EL-171 on cotton and purple nutsedge. Proc. South. Weed Sci. Soc. 30:113–118.Google Scholar