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Agronomy Journal Abstract -

Nitrogen-Potassium Utilization by Three Pasture Grasses1


This article in AJ

  1. Vol. 57 No. 5, p. 445-448
    Received: Jan 23, 1965

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  1. Robert W. Duell2



Orchardgrass yields were reduced more by the inadequacy of applications of NH4NO3 only, than were tall fescue or Kentucky bluegrass. Percentage of K in plant tissue decreased where NH4NO3 was the only fertilizer applied. Orchardgrass showed the greatest and Kentucky bluegrass the least response to differences in K. In P content and responsiveness to P availability, the species ranked: orchardgrass>tall fescue>Kentucky bluegrass. Plots receiving only NH4NO3 had higher percentages of crude protein. Tail fescue generally had the lowest percentage of crude protein.

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