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This article in AJ

  1. Vol. 57 No. 6, p. 555-558
     
    Received: Mar 18, 1965
    Published: Nov, 1965


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doi:10.2134/agronj1965.00021962005700060012x

Effect of Fall and Spring Application of Four Rates of Potassium on Yield and Composition of Timothy in Alaska1

  1. Winston M. Laughlin2

Synopsis

Synopsis

K application increased dry-matter yields, K content, P and K uptake, and recovery of applied P, tended to increase the Ca/Mg ratio and sum of cations, reduced leaf spot infection, and tended to reduce N, P, Mg, and Ca content. Forage contained very high Mg and low Ca producing a low Ca/Mg ratio. Second clipping forage contained more Ca and Mg and less K than did the first clipping. Spring K application increased K content and uptake and tended to reduce incidence of leaf spot as compared to fall K application.

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