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Tensile Strength Variations in Leaves of Weeping Lovegrass (Eragrostis Curvula (Schrad.) Nees.) and Certain Other Grasses¹

Synopsis: Significant leaf tensile-strength differences were found among strains of weeping lovegrass and among clones of bermudagrass, sideoats grama, and sand bluestem. Wide within-strain variations (leaf to leaf and plant to plant) made precise comparisons difficult. Reasons for this variation were investigated and procedures for increasing precisions of estimate are discussed. Principal source of nongenetic variations was age or growth stage of individual leaves tested.

² Research Agronomist, Crops Research Division, ARS, USDA and Associate Professor, Oklahoma State University, U. S. Southern Great Plains Field Station, Woodward, Oklahoma. Tensilgraph data were obtained by H. W. Brown and M. D. Shafto.

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