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Browsing by Author "Staggenborg, Scott A."

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    Biomass production of herbaceous energy crops in the United States: field trial results and yield potential maps from the multiyear regional feedstock partnership
    Lee, Do Kyoung; Aberle, Ezra; Anderson, Eric K.; Anderson, William; Baldwin, Brian S.; Baltensperger, David; Barrett, Michael; Blumenthal, Jurg; Bonos, Stacy; Bouton, Joe; Bransby, David I.; Brummer, Charlie; Burks, Pane S.; Chen, Chengci; Daly, Christopher; Egenolf, Josh; Farris, Rodney L.; Fike, John H.; Gaussoin, Roch; Gill, John R.; Gravois, Kenneth; Halbleib, Michael D.; Hale, Anna; Hanna, Wayne; Harmoney, Keith; Heaton, Emily A.; Heiniger, Ron W.; Hoffman, Lindsey; Hong, Chang O.; Kakani, Gopal; Kallenbach, Robert; Macoon, Bisoondat; Medley, James C.; Missaoui, Ali; Mitchell, Robert; Moore, Ken J.; Morrison, Jesse I.; Odvody, Gary N.; Richwine, Jonathan D.; Ogoshi, Richard; Parrish, Jimmy Ray; Quinn, Lauren; Richard, Ed; Rooney, William L.; Rushing, J. Brett; Schnell, Ronnie; Sousek, Matt; Staggenborg, Scott A.; Tew, Thomas; Uehara, Goro; Viands, Donald R.; Voigt, Thomas; Williams, David G.; Williams, Linda; Wilson, Lloyd Ted; Wycislo, Andrew; Yang, Yubin; Owens, Vance (2018-10)
    Current knowledge of yield potential and best agronomic management practices for perennial bioenergy grasses is primarily derived from small-scale and short-term studies, yet these studies inform policy at the national scale. In an effort to learn more about how bioenergy grasses perform across multiple locations and years, the U.S. Department of Energy (US DOE)/Sun Grant Initiative Regional Feedstock Partnership was initiated in 2008. The objectives of the Feedstock Partnership were to (1) provide a wide range of information for feedstock selection (species choice) and management practice options for a variety of regions and (2) develop national maps of potential feedstock yield for each of the herbaceous species evaluated. The Feedstock Partnership expands our previous understanding of the bioenergy potential of switchgrass, Miscanthus, sorghum, energycane, and prairie mixtures on Conservation Reserve Program land by conducting long-term, replicated trials of each species at diverse environments in the U.S. Trials were initiated between 2008 and 2010 and completed between 2012 and 2015 depending on species. Field-scale plots were utilized for switchgrass and Conservation Reserve Program trials to use traditional agricultural machinery. This is important as we know that the smaller scale studies often overestimated yield potential of some of these species. Insufficient vegetative propagules of energycane and Miscanthus prohibited farm-scale trials of these species. The Feedstock Partnership studies also confirmed that environmental differences across years and across sites had a large impact on biomass production. Nitrogen application had variable effects across feedstocks, but some nitrogen fertilizer generally had a positive effect. National yield potential maps were developed using PRISM-ELM for each species in the Feedstock Partnership. This manuscript, with the accompanying supplemental data, will be useful in making decisions about feedstock selection as well as agronomic practices across a wide region of the country.
  • Nitrogen use efficiency in grain sorghum genotypes
    Prasad, P. V. Vara; Mahama, George Y.; Mengel, D. B.; Staggenborg, Scott A.; Tesso, T. T. (2011)
    Grain sorghum is an important crop in the semi-arid regions. Productivity of grain sorghum is limited by soil fertility, especially nitrogen (N). Sorghum genotypes are known to vary in their response to nitrogen, however, the information on N use efficiency (NUE) is limited. Objectives of this research were to (a) determine the response of sorghum genotypes (hybrids and inbred lines) to N; and (b) quantify genotypic differences in nitrogen use efficiency. Field experiments were conducted at three locations (Hays, Ottawa and Manhattan, Kansas) in 2010. Six hybrids and six inbred lines were grown at three N regimes; 0, 45 and 90 kg N ha-1. Experimental design was a split-plot design with N as main plots and genotypes as sub-plots, with four replications. Planting was done in May and June across all the locations, and N fertilizer (Urea, 46%N) was applied at emergence. Data on biomass was measured at vegetative, flowering and maturity, and grain yield at maturity. Concentrations of N in the grain and components of NUE were determined for Ottawa. There were significant effects (P