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Garden Mums: Upper leaf yellowing and necrosis
When phosphorus is limited during flowering, mums translocate it from the nearest leaf sink, resulting in upper leaf yellowing and necrosis.
Recently investigated a situation affecting garden mums that occurred at two greenhouse operations. The problem was out of the ordinary and wanted to share insights into new aspects of phosphorus nutrition.
With the first operation, one cultivar had upper leaf necrosis and yellowing.
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