Education_Student Presentations_Sax

Information about Education_Student Presentations_Sax

Published on July 14, 2014

Author: csimkovich

Source: authorstream.com

Content

The Scoop & Dump method of Soil Remediation: The Scoop & Dump method of Soil Remediation By Miles S. Sax Cornell University Public Garden Leadership mps Dept. of Horticulture Soil Health: Soil Health Physical Biological Chemical Soil Health Test: Soil Health Test Soil Health Test: Soil Health Test Physical Aggregate Stability (%) Water Holding Capacity ( % ) Bulk Density (g/cm 3 ) Texture Resistance (PSI) Biological Organic Matter (%) Active Carbon (ppm) Soil Respiration Soil Protein Chemical pH Nutrients (P, K, Ca,Mg , Fe,Mn , Zn) What Are Urban Soils?: What Are Urban Soils? “Non agricultural man made surface layer more than 50 cm thick that has been produced by mixing, filling, or by contamination of land surface in urban and suburban areas” (Bryant Scharenbroch 2013 adapted from Jeny 1945: Bockheim 1974) Urban Soil Characteristics: Urban Soil Characteristics Urban soils have distinct characteristics: High Soil bulk density Decrease in Organic Matter Poor structure High pH Low Water Holding Capacity Decreased Aggregate Stability Inadequate soil depth for root growth Decrease in microbial b iomass & activity (Scharenbroch et al 2005, Jim, C. 1998)   Effects of the Scoop & Dump Soil Remediation Technique on Urban Soil Quality : Effects of the Scoop & Dump Soil Remediation Technique on Urban Soil Quality Scoop & Dump Technique: Scoop & Dump Technique Apply 6 -8” of compost to compacted soil Use backhoe bucket to dig down to 18” Mulched added every year to replenish organic matter PowerPoint Presentation: Scoop & Dump at Cornell Hort 4910: Creating The Urban Eden Woody Plant ID & Landscape Establishment PowerPoint Presentation: Scoop & Dump Unamended Std. Err. P Value 72.41 34.90 4.88 <.0001 PowerPoint Presentation: Scoop & Dump Unamended Std. Err. P Value 8.43 3.23 0.58 <.0001 PowerPoint Presentation: Scoop & Dump Unamended Std. Err. P Value 1022.47 361.60 51.51 <.0001 PowerPoint Presentation: Scoop & Dump Unamended Std. Err. P Value 0.23 0.15 0.01 <.0001 PowerPoint Presentation: Scoop & Dump Unamended Std. Err. P Value 27.53 3.11 4.41 .0005 Resistance (Penetrometer): Resistance (Penetrometer) Treatment Mean St. Dev. Scoop & Dump 9.74 2.24 Unamended 3.44 1.65 PowerPoint Presentation: Scoop & Dump Unamended Std. Err. P Value 0.89 1.47 0.06 <.0001 Scoop & Dump Over Time : Scoop & Dump O ver Time Bulk Density: Bulk Density Potentially Mineralizable Nitrogen: Potentially Mineralizable Nitrogen Active Carbon: Active Carbon Soil Container Study: Soil Container Study PowerPoint Presentation: Scoop & Dump Unamended Std. Err. 933.18 579.89 59.14 PowerPoint Presentation: Scoop & Dump Unamended Std. Err. 6.44 5.21 0.27 PowerPoint Presentation: Scoop & Dump Unamended Std. Err. 10.17 7.03 0.63 PowerPoint Presentation: Texture Bulk Density Sand 1.75 (g/cm 3 ) Silt & Clay 1.40 (g/cm 3 ) Avg. Bulk Density Root Limiting Bulk Density Scoop&Dump Unamended Std. Err. 0.97 1.68 0.05 PowerPoint Presentation: = Scoop & Dump = Unamended Root Limiting Bulk Density PowerPoint Presentation: Root Limiting Bulk Density = Scoop & Dump = Unamended PowerPoint Presentation: = Scoop & Dump = Unamended Scoop & Dump Remediation Improves Urban Soil Characteristics: Scoop & Dump Remediation Improves Urban Soil Characteristics Urban soils distinct characteristics: High Soil bulk density* Decrease in Organic Matter* Poor structure* High pH Low Water Holding Capacity* Decreased Aggregate Stability* Inadequate soil depth for root growth* Decrease in microbial b iomass & activity* (Scharenbroch et al 2005, Jim, C. 1998)   Questions: Questions Miles S. Sax – Department of Horticulture [email protected] Cornell University

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