Biochar impact on Midwestern Mollisols and maize nutrient availability

In the second cropping year, biochar along with pyrogallol application increased available K content by 78% over unamended control.

“In the second cropping year, biochar along with pyrogallol application increased the available K content by 78% over the unamended control (Rogovska et al., 2014).”

Two years after application of biochar prepared from mixed hardwood chips in a fine loamy Hapludols decreased the extractable P at different incubation periods.

“Two years after application of biochar prepared from mixed hardwood chips (primarily oak ( Quercus sp.), elm ( Ulmus sp.) and hickory ( Carya spp sp.)) in a fine loamy Hapludols decreased the extractable P at different incubation periods (Rogovska et al., 2014).”

Two years of mixed hardwood biochar application in fine loamy Hapludols almost doubled the extractable K content over unamended soil.

“Two years of mixed hardwood biochar (primarily oak, elm and hickory) application in fine loamy Hapludols had almost doubled the extractable K content over the unamended soil (Rogovska et al., 2014).”

Soil extractable Mn and Fe decreased, while Cu and Zn increased due to application of a mixed wood biochar.

“Among the micronutrients, soil extractable Mn and Fe decreased, while Cu and Zn increased due to the application of a mixed wood biochar (Rogovska et al., 2014).”