Bulletin 208, Cucumber Diseases in Florida


Cool and Crisp, Fordhook, Snow's Pickling, Henderson, Ever-
bearing, Livingston Evergreen, Livingston Emerald, Klondike,
Early Fortune, Thorburns, Black Diamond, Chicago Pickling,
Prolific Pickle, Green Prolific, Jersey Pickling, Early Cyclone,
Cumberland, Japanese Climbing, Early Green Cluster, Short
Green Gherkin, Extra Early Whitespine, Early Whitespine.
 Sanitation and rotation are good farming practices from the
viewpoint of soil fertility and general disease control, but it is
doubtful whether either of these practices will have much effect
upon the prevalence of downy mildew.


















Fig. 5. Portion of experimental plot showing dusted plants on right and
 undusted (check) plants on left.

 Experimental plots were sprayed and dusted during several
seasons to determine the advisability of using fungicides, their
benefit, if any, and the cost. (Fig. 5.) The spraying was done
with a hand sprayer of the knapsack type (Fig. 36), and the dust-
ing was done with a hand dusting machine (Fig. 37.)
 The liquid sprays applied consisted of commercial copper-lime
mixture. The dusts applied were copper-lime mixtures and sul-
phur dusts. The dusts were always applied in the early morning
when the dew was on the plants.
 The data collected in these experiments show that the plots
 which received the application of certain fungicides gave a larger
 profit per acre than the untreated plots after all costs were paid.
 It showed that the cost of the dust was almost twice the cost of