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- W26336761 abstract "Shoaf, Nathan L. M.S., Purdue University, May 2014. Biochar and Vermicompost Amendments in Vegetable Cropping Systems: Impacts on Soil Quality, SoilBorne Pathogens and Crop Productivity. Major Professor: Lori Hoagland. Amending soils with biochar and vermicompost has the potential to provide multiple benefits for specialty crops including pathogen suppression and increased crop productivity. Oomycete pathogens such as Phytophthora capsici can devastate crop fields and they are difficult to control presenting significant management challenges for Midwestern growers. Soils amended with a microbially-inoculated softwood biochar increased carrot root growth relative to the control and corn stover biochar in 2011, while the corn stover biochar also increased carrot root growth relative to the control, but only in two varieties. Neither biochar treatment influenced carrot growth in 2012. In greenhouse trials, vermicompost amendments provided little nitrogen and pepper growth was reduced compared to treatments that received Osmocote fertilizer. We observed some evidence of nitrogen immobilization in response to both biochar amendments, though not enough to influence pepper productivity. Both biochar amendments increased soil pH relative to the control, and vermicompost increased soil pH relative to biochar treatments in all three soils tested. The softwood biochar amendment reduced fluorescein diacetate (FDA) enzyme activity alone and in combination with the vermicompost relative to the control in all soils, which could have resulted from enzyme sorption. The softwood biochar increased shoot length and root dry weight relative to the control in soil P, but not in the other two soils. The microbially-inoculated softwood biochar reduced P. capsici soil populations in two of the three soils tested, and coupling this biochar" @default.
- W26336761 created "2016-06-24" @default.
- W26336761 creator A5019645837 @default.
- W26336761 date "2014-01-01" @default.
- W26336761 modified "2023-09-26" @default.
- W26336761 title "BIOCHAR AND VERMICOMPOST AMENDMENTS IN VEGETABLE CROPPING SYSTEMS: IMPACTS ON SOIL QUALITY, SOIL-BORNE PATHOGENS AND CROP PRODUCTIVITY" @default.
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