Effect of Nitrogen Rate and Tillage Management on Corn Cellulosic Yield and Ethanol Yield
February 18, 2015http://link.springer.com/article/10.1007/s12155-015-9586-1/fulltext.html
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Corn (Zea mays L.) stover and cobs left after harvest can serve as feedstock for cellulosic ethanol production. Aaron J. Sindelar of the USDA Agricultural Research Service conducted field trials at two locations in Minnesota over three years to determine the effect of tillage system (chisel tillage, strip-tillage, and no-tillage) and fertilizer N rate on corn cellulosic yield composition and ethanol yield.
Biomass yield, C and N concentrations and content, and potential ethanol yield of corn stover increased with increasing fertilizer N rate. However, the stover's parameters were less in no tillage compared the other tillage systems. All the parameters for cob also increased with fertilizer N rate, however, it was not as high as that for stover. Tillage system did not influence any parameter of cobs.
These show that biomass and ethanol production of stover and cobs are affected by N and tillage system. Cobs may be a more viable feedstock option than stover since it was less sensitive to management.
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