Nutrient sources and harvesting frequency on quality biomass production of switchgrass (Panicum virgatum L.) for biofuel

Yesuf Assen Mohammed, William Raun, Gopal Kakani, Hailin Zhang, Randy Taylor, Kefeyalew Girma Desta, Crain Jared, Jeremiah Mullock, Jake Bushong, Apurba Sutradhar, Muaid S. Ali, Michael Reinert

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Improper management of cattle manure and poultry litter from confined animal farming are usually source of water pollution. However, appropriate application of these products on switchgrass (Panicum virgatum L.) field can enhance biomass yield and promote nutrient recycling. We evaluated the effects of harvest frequency and nutrient sources on yield and quality of switchgrass for biofuel feedstock. The experiment was carried out at Perkins and Lake Carl Blackwell, Oklahoma, from 2009 to 2011 using split plot design with four replications. The main plot treatments were two harvest frequencies single (June), and twice (June and November). The subplot treatments were nutrient sources: 1) cattle manure (CM), 2) poultry litter (PL), 3) urea (nitrogen at 150kg ha-1), 4) combined chemical fertilizer (nitrogen-P2O5-K2O) with nitrogen at 150kgha-1, P2O5 at 40kgha-1, and K2O at 20kgha-1, 5) inter-seeded Crimson clover (Trifolium incarnatum L.), and 6) control. Mean biomass yield was higher (12.4Mgha-1) in 2010 than other years possibly due to optimum moisture and temperature in 2010. At Perkins in 2010, application of CM and PL increased biomass yield significantly by 30 and 23% compared with combined chemical fertilizer (12.9Mgha-1). The effect of nutrient sources on cellulose, hemicellulose and lignin content was not significant at both locations. Cumulative biomass from twice harvest was similar to single harvest except in 2011 due to dry weather after the first cut. The cellulose and lignin content were significantly higher for single harvest compared with twice harvest at both locations.

Original languageEnglish (US)
Pages (from-to)242-248
Number of pages7
JournalBiomass and Bioenergy
Volume81
DOIs
StatePublished - Oct 1 2015

Keywords

  • Biomass
  • Cattle manure
  • Feedstock
  • Poultry litter
  • Soil fertility
  • Switchgrass

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