124-10 Simulating Switchgrass Biomass Yield and N Removal Using Almanac.

See more from this Division: C06 Forage and Grazinglands
See more from this Session: C06 Robert F Barnes Graduate Student Oral Contest
Monday, November 3, 2014: 1:40 PM
Long Beach Convention Center, S-7
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Alexandre Caldeira Rocateli, Plant and Soil Science, Oklahoma State University, Stillwater, OK, Charles West, Plant & Soil Science, Texas Tech University, Lubbock, TX, Kristofor R. Brye, Crop, Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR, James R. Kiniry, USDA-ARS Grassland Soil & Water Research Lab, Temple, TX, Michael Popp, Agricultural Economics, University of Arkansas, Fayetteville, AR and Amanda J Ashworth, University of Tennessee - Knoxville, Knoxville, TN
An accurate growth model for switchgrass (Panicum virgatum L.) is needed to support decision-making on timing of harvest to predict biomass yield as a function of soil and weather conditions and to maximize resource-use efficiency. The aim is to calibrate ALMANAC model to simulate seasonal changes in biomass yield and incorporate new logic for simulating N removal in harvested biomass for Arkansas conditions. Plots were established in 2008 in Fayetteville, AR, with cv. Alamo and were sampled approximately monthly from early May 2009 to mid-February 2010, and again in 2010-2012. Simulations using ALMANAC will be used to test and improve the predictive ability of the model for biomass yield using a calibration from the 2009 growing season.
See more from this Division: C06 Forage and Grazinglands
See more from this Session: C06 Robert F Barnes Graduate Student Oral Contest