Commercial Fertilizers Influence Crude Protein Content of Four Mixed Prairie Grasses

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Abstract
The influence of 10 fertilizer treatments on the protein content of blue grama, buffalo-grass, windmillgrass, and silver bluestem was studied on the Texas Technological College Research Farm, Pantex. These included nitrogen at 33, 100, and 300 lb/acre, P2O5 at 33, 100, and 300 lb/acre, and both N and P at the same levels. AH levels of N, either alone or with P, increased protein content over the controls. P when applied alone did not significantly influence protein content. N fertilization influenced protein content of grasses in the later winter through an increase in total protein. Buffalograss, windmillgrass, and blue grama remained sufficiently high in protein through March to meet wintering requirements of pregnant beef cows.

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