2004
DOI: 10.1590/s0103-90162004000300014
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Abstract: In the soil, herbicides are submitted to absorption, leaching and degradation by physical, chemical and biological processes or absorbed by plants. All these processes are dependent on soil class and weather conditions and affect the product efficiency on weed control. The objective of this work was to investigate the influence of soil attributes on sulfentrazone efficiency for controlling purple nutsedge (Cyperus rotundus L.). Soil samples from LVAd (Typic Haplustox), LVd, LVdf and LVef (Typic Haplustox and T… Show more

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Cited by 14 publications
(10 citation statements)
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References 16 publications
(16 reference statements)
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“…According to the Environment and Renewable Natural Resources Institute ("Instituto do Meio Ambiente e dos Recursos Naturais Renováveis" - Ibama, 1990), this compound was classified as a medium-persistence herbicide (with a half-life between 90 and 180 days), which corroborates the half-life value obtained in the present study, of 172.4 days at 27°C and 70% WHC, close to the average value found under natural field conditions. Sulfentrazone has medium to high persistence, and precautions are required with respect to the application intervals, allowing sufficient time for dissipation, thus minimizing the risk of damage to crops and non-target species (Alves et al, 2004). Ohmes et al (2000) showed that microbial degradation is an important mechanism for sulfentrazone dissipation, since its degradation was very slow in autoclaved soils.…”
Section: Discussionmentioning
confidence: 99%
“…According to the Environment and Renewable Natural Resources Institute ("Instituto do Meio Ambiente e dos Recursos Naturais Renováveis" - Ibama, 1990), this compound was classified as a medium-persistence herbicide (with a half-life between 90 and 180 days), which corroborates the half-life value obtained in the present study, of 172.4 days at 27°C and 70% WHC, close to the average value found under natural field conditions. Sulfentrazone has medium to high persistence, and precautions are required with respect to the application intervals, allowing sufficient time for dissipation, thus minimizing the risk of damage to crops and non-target species (Alves et al, 2004). Ohmes et al (2000) showed that microbial degradation is an important mechanism for sulfentrazone dissipation, since its degradation was very slow in autoclaved soils.…”
Section: Discussionmentioning
confidence: 99%
“…Iron oxides and hydroxides, found in several Brazilian soils also affect the sorption of sulfentrazone to soil (Alves et al, 2004). When evaluating the efficiency of sulfentrazone in the control of Cyperus rotundus, Alves et al (2004) observed that this decreases according to the increase of iron oxides in the soil and that the organic matter and clay contents in the soil did not interfere in the efficiency.…”
Section: Sorption In Soilmentioning
confidence: 99%
“…Preemergent herbicides can be influenced by sorption, leaching and degradation processes and by physical, chemical and biological processes or be absorbed by plants, which are dependent on the type of soil, climate conditions and herbicide characteristics (Alves et al, 2004;Szmigielski et al, 2009) and hence can influence the efficiency in weed control and crop selectivity.…”
Section: Introductionmentioning
confidence: 99%