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Fig. 1. Dry matter yields of 50 different grass–legume mixtures planted in 2.7- by 15.3-m plots near Storrs, CT, in 1932. The soil was a Charlton fine sandy loam (coarse-loamy, mixed, active, mesic Typic Dystrudepts) with pH 5.8. Plots were harvested three times per year during 1933, 1934, and 1935. Data points are 3-yr averages for each mixture. Adapted from Table 5 of Brown and Munsell (1936). Legumes included red clover, white clover (small leaf and large leaf type), alfalfa, and alsike clover (Trifolium hybridum L.). Grasses included orchardgrass, perennial ryegrass, timothy, smooth bromegrass, tall oatgrass [Arrhenatherum elatius (L.) Beauv. ex J. & K. Pres], meadow fescue (Festuca pratensis Huds.), redtop (Agrostis alba L.), reed canarygrass, bentgrass (Agrostis tenuis L.), Kentucky bluegrass, Canada bluegrass (Poa compressa L.), and sweet vernal grass.
