Does growing switchgrass require as many inputs as corn?
No, switchgrass requires less intensive management than corn. Herbicide usage is typically limited to the first year of growth. After the first year, the stand of switchgrass becomes thick enough to out-compete any weeds. Fertilizer needs are also lower. Annual applications of nitrogen are recommended at 60lbs per acre beginning in the spring of the second year. Phosphorous and potassium are only recommended if soil tests indicate low levels of P and/or K, annual applications of P205 (40lbs/acre) and K20 (80lbs/acre). Irrigation is not needed for switchgrass.
