TY - JOUR T1 - Comparing nondestructive and destructive methods of measuring leaf chlorophyll content: tracking changes in foliar chlorophyll of five Andropogon gerardii ecotypes (Poaceae) JF - Photosynthetica Y1 - 2014 A1 - Caudle, K.L. A1 - Johnson, L.C. A1 - S.G. Baer A1 - Maricle, B.R. VL - 52 ER -