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Corn Stover Harvesting and Densification Iowa State University Department of Agricultural and Biosystems Engineering Tom Tuetken, Research Assistant Goals and Objectives To design and build a new corn stover harvest and transport system capable of the following:

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corn stover harvesting and densification

Corn Stover Harvesting and Densification

Iowa State University

Department of Agricultural and Biosystems Engineering

Tom Tuetken, Research Assistant

goals and objectives
Goals and Objectives
  • To design and build a new corn stover harvest and transport system capable of the following:
    • Harvest stover at any moisture level while simultaneously harvesting the grain and separating the two streams of materials
    • Maximize the density of the stover for economical transportation
current stover collection methods
Current Stover Collection Methods
  • Forage Harvesting
    • No Separation of Grain
    • High Grain Damage
  • Baling
    • Dirt Collection
    • Rock Collection
    • Undesirable Use of Plastic Twine
    • 2nd Pass Operation
current stover collection
Current Stover Collection
  • Stakhand
    • Little Cob Collection
    • High Dirt Collection
    • 2nd Pass Operation
systems developed
Systems Developed
  • Two-Tier Corn Head
    • Mounted on Prototype “Bass” Plot Combine
    • Utilizes Geringhoff Row Units
    • Corn, Cob,Stalks Separated and Collected
transport system for bass combine
Transport System for Bass Combine
  • 32 Foot Transport Trailer
    • 15 Ton Overall Capacity
    • Able to Press Material to Achieve Higher Density
  • Towed by 3185 JCB Fastrac
    • Capable of 45 mph
    • 4 Wheel Drive With Full Suspension and Brakes
combined systems developed
Combined Systems Developed
  • International Harvester 1460 Axial Flow Combine with Row Bean Head
    • Collects the Whole Plant
    • Harvests and Separates Grain From Stover
  • Stover Conveyed to Hesston Stakhand 10
    • Density of Stover Increased
    • Dirt Free Collection
alternative systems developed
Alternative Systems Developed
  • Used with “Stover Caddy”
    • Collects All Material From Rear of Combine
    • Uses Forage Blower to Convey Into Wagon
  • John Deere 9750 STS Combine
    • 8-Row Corn Head
    • 6-Row Bean Head
fall 2001 initial test results
Fall 2001 Initial Test Results
  • IH 1460 Combine with Hesston Stakhand
    • Testing Near Biomass Energy Conversion Facility(BECON), Nevada, IA
      • Stack Density Average of 9.2 lb/ft3
      • Corn Yield Average of 186 bu/acre (10788 lb/acre)
      • Stover Yield Average of 9057 lb/acre
fall 2001 initial test results11
Fall 2001 Initial Test Results
  • October 29th Field Demonstration in Harlan, Iowa
    • Equipment Demonstrated:
      • IH 1460 and Hesston Stakhand
      • Modified Bass Plot Harvester
      • John Deere STS 9650 with “Stover Caddy”
      • Hesston 4 x 3 Giant Square Baler 4910
conclusions
Conclusions
  • One-Step Crop Harvesting Possible
    • Harvest and Separation of Grain and Stover Achieved
    • Need for Increased Capacity
    • Grain/Stover Loading Rate Must Be Realized
  • Densification of Stover
    • Development of Improved Methods Essential to Get Heavier Loads
    • Improved Stalk Cut Uniformity Desirable
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