Blue Grama (Bouteloua gracilis) Response To Fertilization of a Claypan Soil in the Greenhouse

Abstract

Blue grama, grown in situ on the upper 12 cm of a claypan soil in the greenhouse, had greater growth when minor elements were added with N, P, and K. N fertilized plants produced significantly less forage than NPK-fertilized ones but slightly more than unfertilized plants. Renovation of claypan areas to increase water infiltration may need to be accompanied by fertilization with minor elements, particularly on old landscapes where soil weathering has been intense.