Sugar in beet roots limited by high temperatures and high levels of soil nitrogen in Kern County tests
AuthorsG. V. Ferry
F. J. Hills
R. S. Loomis
Authors AffiliationsG. V. Ferry is Farm Advisor, Kern County; F. J. Hills is Extension Agronomist; R. S. Loomis is Assistant Agronomist, University of California, Davis; Albert Ulrich is Plant Physiologist, U.C., Berkeley.
Hilgardia 17(5):8-9. DOI:10.3733/ca.v017n05p8. May 1963.
Rapid root growth, stimulated by a plentiful supply of soil nitrogen and high summer temperatures, held the sugar content of beet roots down to 15% or lower during July and August in a 1961 field experiment in Kern County. Enough fertilizer nitrogen should be applied to promote early top growth and prevent any deficiency before mid-May. However, a nitrogen deficiency period of from eight to ten weeks before harvest is essential for maximum sugar production from the roots.
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