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 ,.6 ,-JEverglades Station Mimeo Report 60-3 15 September 1959


 CHEMICAL WEED CONTROL FOR VEGETABLE CROPS
 ON ORGANIC SOILS OF THE EVERGLADES

 by

 J. R. Orsenigo_/


 This is a revision of EES Mimeo Report 59-2. Recommendations
 and suggestions herein are based on experiments conducted by
 the Everglades Experiment Station and are supplemented by data
 developed elsewhere. See also Florida Agricultural Extension
 Service Circular 196. This information is intended for grower
 guidance and familiarization and growers are urged to observe
 the manufacturer's label and labelling precautions for commer-
 cial use of herbicides in vegetable crops.


 Herbicides are gaining wide acceptance as production tools in the commercial
 production of vegetable crops. These chemicals cannot be substituted for good
 horticultural practice but offer timely, effective and economical weed control
 for certain vegetables. For best results the following must be observed: USE -
 THE RIGHT CHEMICAL FOR THE CROP AND WEEDS; IN THE RIGHT AMOUNT; IN THE RIGHT WAY;
 AT THE RIGHT TIME; and IN THE RIGHT PLACE.

 Recommendations and suggestions herein are intended for grower guidance and
 familiarization with herbicides and application methods.. Each grower must eva-
 luate the potential of these chemicals in his situation. It is suggested that
 initial use be restricted to a limited acreage and that the precautions and indi-
 cations of the manufacturer's label be followed carefully.

 Generally, band application of herbicides will be most ec al since only
 part of the total crop land will be sprayed. Planter-mount '- mounted and
 trailed sprayers can be used but the following conditions /' ld be ved to
 obtain the most satisfactory results:
 Spraying pressure: 20 to 40 p a
 Spray volume: 20 to 40 gp c
 Flat-fan spray nozzles. \
 Good ground coverage is important and most pre-emergence icides a st
 effective when applied to moist surface soil. ,

 All herbicide rates are expressed on a PER SPRAYED ACRE basis in terms of
 usual commercial formulation. The customary active ingredient content of herbi-
 cides used in this report is given in the glossary along with herbicide nomen-
 clature and herbicide terminology. Appended to'the report are a sprayer calibra-
 tion table and illustrations of methods of herbicide application.

 RECOMMENDED herbicidal treatments (chemical, rate and manner of application) are
 those considered generally reliable for commerical production when used as speci-
 fied. It is recommended that growers without prior herbicide-use experience
 confine initial applications to a limited acreage.

 SUGGESTED herbicidal treatments represent promising materials which have not been
 tested fully locally or materials which do not have current FDA approval for the
 crops indicated. Growers may wish to utilize suggested treatments on a very
 limited acreage.

 I/ Assistant Horticulturist, Everglades Experiment Station, Belle Glade, Florida