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Show CONTROL DISEASE OF CELERY IN SUMMER Pennsylvania Experiment Station Advises Keeping Plants Coated With Bordeaux Mixture. Plants may develop this disease in the seedbed and it is most prevalent in early summer. To control . the disease dis-ease the Pennsylvania State college agricultural experiment station advises keeping the young plants coated with a 4-4-f)0 bordeaux mixture. Later the nonstaining nmmoniaoal copper carbonate solution should be used. Well-drained, half-shaded fields seem to suffer less than others. |