High surface area biochar negatively impacts herbicide efficacy

@article{Graber2011HighSA,
  title={High surface area biochar negatively impacts herbicide efficacy},
  author={Ellen R. Graber and Ludmila Tsechansky and Zev Gerstl and Beni Lew},
  journal={Plant and Soil},
  year={2011},
  volume={353},
  pages={95-106}
}
Background and AimsAmendment of soil by biochar may reduce efficacy of soil-applied herbicides due to sorption.MethodsBioassays with Green Foxtail (Setaria viridis) tested the influence of two biochars on phytoavailability of S-metolachlor and sulfentrazone under biochar amendment of 0, 13, 26 and 52 Mg ha-1.ResultsAdsorption of both herbicides was an order of magnitude greater on a high specific surface area (SSA) biochar (EUC-800; SSA 242 m2 g-1) than on a low SSA biochar (BC-1; SSA 3.6 m2 g… 

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References

SHOWING 1-10 OF 75 REFERENCES
Poor efficacy of herbicides in biochar-amended soils as affected by their chemistry and mode of action.
TLDR
The greater biomass of ryegrass in the soil containing the highest biochar demonstrates decreased bioavailability of the chemicals caused by the wheat straw biochar, clearly demonstrating decreased efficacy of herbicides in biochar amended soils.
Reduced plant uptake of pesticides with biochar additions to soil.
TLDR
The BC850 was particularly effective in reducing phytoavailability of both pesticides from soil, due to its high affinity for and ability to sequester pesticide residues.
Biochar mediated alterations in herbicide breakdown and leaching in soil
Abstract Biochar application to soil has been proposed as a mechanism for improving soil quality and the long term sequestration of carbon. The implications of biochar on pesticide behavior,
Influence of biochars on plant uptake and dissipation of two pesticides in an agricultural soil.
TLDR
Biochar BC850 was found to be effective in reducing the bioavailability of both pesticides from the soil and could be applied to sequester pesticide residues in contaminated soils and to reduce plant uptake.
Enhanced and irreversible sorption of pesticide pyrimethanil by soil amended with biochars
Biochar derived from partial combustion of vegetation is ubiquitous and potentially effective in sequestration of environmental contaminants.Biochars were prepared by burning of red gum(Eucalyptus
Sorption, Volatilization, and Efficacy of the Fumigant 1,3-Dichloropropene in a Biochar-Amended Soil
Sorption of the soil fumigant, 1,3-dichloropropene (DCP), on cornstraw biochar (fast pyrolysis at 500°C; specific surface area [SSA] of 3.0 m2 g−1) was strongly nonlinear and significantly greater on
Burned rice straw reduces the availability of clomazone to barnyardgrass.
TLDR
Calculations suggest that field burning of rice straw may result in sufficiently high amounts of BRS, and hence contribute to often experienced loss of pesticide availability in agricultural soils.
The role of biochar in modifying the environmental fate, bioavailability, and efficacy of pesticides in soils: a review
The role of biochar in sequestration of carbon, reducing the emission of greenhouse gases, and improving the soil fertility is increasingly being recognised and is leading to the recommendations of
Using poultry litter biochars as soil amendments
Despite the recent interest in biochars as soil amendments for improving soil quality and increasing soil carbon sequestration, there is inadequate knowledge on the soil amendment properties of these
Sorption properties of greenwaste biochar for two triazine pesticides.
TLDR
Combined adsorption and partition mechanisms well depicted sorption of atrazine and simazine on carbonized and noncarbonized fractions of the biochar in the single-solute and co-Solute systems.
...
1
2
3
4
5
...