Relative importance of the effect of 2,4-D, glyphosate, and environmental variables on the soil microbial biomass
Identifieur interne : 004756 ( Main/Exploration ); précédent : 004755; suivant : 004757Relative importance of the effect of 2,4-D, glyphosate, and environmental variables on the soil microbial biomass
Auteurs : D. A. Wardle [Canada] ; D. Parkinson [Canada]Source :
- Plant and Soil [ 0032-079X ] ; 1991-07-01.
Abstract
Abstract: Two post-emergence herbicides (glyphosate and 2,4-D) were applied at field application levels to tilled field plots in a mixed cropping area in south-central Alberta. The effects of these chemicals on certain variables associated with microbial biomass and activity were monitored in these plots (as well as corresponding control plots) for 45 days. Glyphosate did not influence any of the microbial variables tested. Addition of 2,4-D significantly influenced all microbial variables investigated but these effects were transient, being detectable only within the first 1–5 days of herbicide addition. The effects of 2,4-D addition on the microbial variables tested, even when significant, were typically small and probably of little ecological consequence especially when spatial and temporal variation in these variables is taken into account.
Url:
DOI: 10.1007/BF00012038
Affiliations:
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A." last="Wardle">D. A. Wardle</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Calgary, 2500 University Drive NW, T2N 1N4, Calgary, Alberta</wicri:regionArea><orgName type="university">Université de Calgary</orgName><placeName><settlement type="city">Calgary</settlement><region type="state">Alberta</region></placeName></affiliation></author><author><name sortKey="Parkinson, D" sort="Parkinson, D" uniqKey="Parkinson D" first="D." last="Parkinson">D. 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The effects of these chemicals on certain variables associated with microbial biomass and activity were monitored in these plots (as well as corresponding control plots) for 45 days. Glyphosate did not influence any of the microbial variables tested. Addition of 2,4-D significantly influenced all microbial variables investigated but these effects were transient, being detectable only within the first 1–5 days of herbicide addition. The effects of 2,4-D addition on the microbial variables tested, even when significant, were typically small and probably of little ecological consequence especially when spatial and temporal variation in these variables is taken into account.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Alberta</li></region><settlement><li>Calgary</li></settlement><orgName><li>Université de Calgary</li></orgName></list><tree><country name="Canada"><region name="Alberta"><name sortKey="Wardle, D A" sort="Wardle, D A" uniqKey="Wardle D" first="D. A." last="Wardle">D. A. Wardle</name></region><name sortKey="Parkinson, D" sort="Parkinson, D" uniqKey="Parkinson D" first="D." last="Parkinson">D. Parkinson</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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