Magnesium deficiency in cut-flower chrysanthemums
AuthorsR. L. Branson
R. H. Sciaroni
J. M. Rible
Authors AffiliationsR. L. Branson is Soil and Water Specialist, University of California, Riverside; R. H. Sciaroni is Farm Advisor, San Mateo County; J. M. Rible is Technologist, Agricultural Extension Service, University of California, Riverside.
Hilgardia 22(8):13-14. DOI:10.3733/ca.v022n08p13. August 1968.
A severe leaf yellowing, or chlorosis problem, has occurred in chrysanthemums at several commercial greenhouses in the San Francisco Bay Area. The disorder was found to be magnesium deficiency caused by high annual applications of potassium. Magnesium fertilization, even at high rates, was not effective in correcting the problem. Elimination of potassium fertilization gave immediate control.
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