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Title: Influence of Weather on the Predicted Moisture Content of Field Chopped EnergySorghum and Switchgrass

To determine the effects of weather on harvested moisture content (MC) of switchgrass (Panicum virgatum) and energy sorghum (Sorghum bicolor), tracking of harvest progress on individual fields in the Integrated Biomass Supply and Logistics (IBSAL) model was modified to allow: i) rewetting of swathed material in the drying formulae; and ii) field queuing rules based on equipment availability and weather. Estimated crop yield and initial MC by harvest date, as observed in field trials, along with the modeling of different delays between mowing and harvest allowed estimation of harvested MC, annual tonnage processed and associated processing cost differences by crop and location over 10 years. Extending the hours of annual equipment use had minor implications on cost of production. Energy sorghum proved difficult to dry in the field. Its higher yield, leading to shorter supply distance to the plant, may justify harvesting of energy sorghum early in the season with drier weather. Lastly, later harvest for lower-yielding switchgrass offers MC advantages.
 [1] ;  [2] ;  [3] ;  [4] ;  [4]
  1. Univ. of Arkansas, Fayetteville, AR (United States). Dept. of Agricultural Economics and Agribusiness
  2. Texas A&M Univ., College Station, TX (United States). Dept. of Biological and Agricultural Engineering
  3. Univ. of British Columbia, Vancouver, BC (Canada). Dept. of Chemical and Biological Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Univ. of Arkansas, Fayetteville, AR (United States)
Publication Date:
OSTI Identifier:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Applied Engineering in Agriculture
Additional Journal Information:
Journal Volume: 31; Journal Issue: 2; Journal ID: ISSN 0883-8542
American Society of Agricultural and Biological Engineers
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
Country of Publication:
United States
54 ENVIRONMENTAL SCIENCES; 09 BIOMASS FUELS; Drying delays; Energy sorghum; Harvest progress; In-field storage; Logistics; Moisture content; Switchgrass