Fertilization influences cattle diets on blue grama range during drought

Allison, C.D.; Pieper, R.D.; Donart, G.B.; Wallace, J.D.

Journal of Range Management 30(3): 177-180

1977


DOI: 10.2307/3897462
Accession: 000378445

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Abstract
Studies conducted in July 1974 to Nov. 1975 on bottomland sites with unfertilized pastures and other pastures that had received 44 kg N/ha as urea over a 7-yr period showed that grass provided 73% and 62% of the available annual herbage from the unfertilized and fertilized pastures, resp. During any single month the difference between the amounts of available grass in cattle diets failed to reach significance. Annual forbs contributed 8 and 18% of the available annual herbage from the unfertilized and fertilized pastures, resp. Perennial forbs contributed 31% of the diets during winter and spring while annual forbs, mainly portulaca (Portulaca pilosa), contributed 32% during summer and autumn.