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Effect of Potassium Rate and Source on Yield and Composition of Bromegrass in Alaska 1
Author(s) -
Laughlin Winston,
Restad Sigmund H.
Publication year - 1964
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1964.00021962005600050012x
Subject(s) - potash , forage , potassium , clipping (morphology) , agronomy , composition (language) , yield (engineering) , dry matter , chemistry , potassium sulfate , chemical composition , zoology , mineralogy , biology , materials science , metallurgy , linguistics , philosophy , organic chemistry
Synopsis K application increased dry‐matter yields. Each K increment increased the K content, tended to increase the sum of cations, and tended to decrease the Ca content and Ca/Mg ratio. The P and Mg contents were independent of K application. Forage contained very high Mg and low Ca producing a very low Ca/Mg ratio. Sulfate and muriate of potash were equally effective as K sources. Second clipping forage contained more P and Mg each year than first clipping forage.