"Prairie grasses" refers to the types of grass that grow naturally in flat, open areas called prairies. These grasses are adapted to survive in prairie environments and play an important role in supporting the prairie ecosystem. Full definition
A final significant finding, Vogel says, is that yields on farms using fertilizer and other inputs, such as herbicides and diesel fuel for farm machinery, were as much as six times higher than yields on farms that used little or no fertilizer, herbicides, or other inputs to grow a mixture of native prairie grasses. (sciencemag.org)
That result contrasts sharply with a controversial study published just over a year ago in Science that suggested that a mixture of prairie grasses farmed with little fertilizer or other inputs would produce a higher net energy yield than ethanol produced from corn (Science, 8 December 2006, p. 1598). (sciencemag.org)
Additional varieties include R&R Respiratory Relief, Senior, Post-Surgery, Health Monitor, and Touch of Outdoor made with prairie grass. (moberrypets.com)