High solids content slurry, systems and methods. In one embodiment, the device includes a display unit having a plurality of pixels and an electronic ink layer for changing a distribution of charged ink particles and selectively substantially covering the pixels on the display unit. Also disclosed are plants, or parts thereof, grown from the seed of the cultivar, plants having the morphological and physiological characteristics of the 11508-73 cultivar, and methods of using the plant or parts thereof in a soybean breeding program.