Bulletin 208, Cucumber Diseases in Florida


 DIFFERENT AMOUNTS OF 4-4-50 BORDEAUX MIX-
 TURE: In making 50 gallons of the mixture, use 4 gallons of
 stock A, diluted to 25 gal-
 lons, and 4 gallons of stock
 B, diluted to 25 gallons. Run
 both of these into the
 sprayer at the same time
 with the agitator going.
 To make 100 gallons of
 spray, use 8 gallons of stock
 A, diluted to 50 gallons, and
 8 gallons of stock B, diluted
 to 50 gallons. Mix as above.
 To make 200 gallons of
 spray, use 16 gallons of
 stock A, diluted to 100 gal-
 lons, and 16 gallons of stock
 B, diluted to 100 gallons.
 Mix as above.
 If it is impractical to use
 the above method of mixing
 the above method of mixing a Fig. 35. Bordeaux mixing plant.
 the Bordeaux, the following (,.murtesy U. S. D. A.)
 method may be used: Pour
 the diluted lime solution into the spray tank, set the agitator
 going and add slowly the diluted bluestone solution.

 THOROUGHNESS IN SPRAYING NECESSARY
 Spraying must be done thoroughly to be a paying proposition.
The tank pressure should not be below 100 pounds. The plants
must be covered completely so that the spores of the fungi will be
killed. The spray should be applied often enough to keep the
growing plants well protected. This usually calls for an appli-
cation every week.
 Spraying should begin as soon as the plants are well up and it
should be continued methodically until the crop is gathered. Some
variation in exact time of application usually occurs, depending
upon the development of the plants and also upon the general
absence or occurrence of specific diseases.
 POWER SPRAYING MACHINERY: In order to thoroughly
spray cucumbers often enough, where large acreages are grown,
it is necessary to select a power sprayer that is fitted to your