Biomass Production and Nutrient Removal by Perennial Energy Grasses Produced on a Wet Marginal Land

• DOI: 10.1007/s12155-022-10488-0
• Publication Date: 2022-07-23T20:05:00Z
• Authors: Danielle R. Cooney; Nictor Namoi; Colleen Zumpf; Soo-Hyun Lim; Maria Villamil; Robert Mitchell; D. K. Lee
• Keywords: Panicum virgatum; Marginal land; Polyculture; Phalaris arundinacea; Monoculture

Abstract Growing dedicated bioenergy crops on marginal land can provide beneficial outcomes including biomass production and energy, resource management, ecosystem services. We investigated the effects of harvest timing (peak standing crop [PEAK] or after killing frost [KF]) nitrogen (N) fertilizer rates (0, 56, 112 kg N ha −1 ) yield, nutrient concentrations, removal perennial grasses a wet land. evaluated three monocultures, switchgrass ( Panicum virgatum L., SW), Miscanthus x giganteus (MG), prairie cordgrass Spartina pectinata Link, PCG), polyculture mixture big bluestem Andropogon gerardii Vitman), Indiangrass Sorghastrum nutans (L.) Nash), sideoats grama Bouteloua curtipendula Torr., MIX). Increasing application did correlate with increased biomass, concentration, subsequent nutrients across almost all treatment combinations. In grass treatments except MG, PEAK harvesting yield removal. At harvest, is ideal for optimizing both While our results also suggest short-term plasticity farmers when selecting optimal removal, KF recommended to ensure long-term stand longevity adequate If adopted, MG would be option potential. Additionally, we found that not vary much timing, suggesting better stability. Future studies should give consideration evaluation mixtures assess their yields capacities.