Everglades Station Mimeo Report EES 65-25 April 1965 -.. 1/ HERBICIDES FOR SUGARCANE IN THE FLORIDA EVERGLADES 2/ J. R. Orsenigo Recommendations and suggestions given here are based primarily on research conducted by the Everglades Ex- periment Station but may be supplemented by data devel oped elsewhere. Growers are urged to observe the K\ manufacturer's label and precautions for commercial use of herbicides in sugarcane. ' Herbicides are effective, economical tools in sugarcane production but are not substitutes for good agronomic practice. The best chemical performance is obtained by adhering to certain guides: USE the RIGHT CHEMICAL for the particu- lar weed problem at the RIGHT TIME, in the RIGHT AMOUNT, WAY AND PLACE. The economics and potential of weed control chemicals in farm management must be evaluated by each grower for his particular situation. Initial use of these chemicals should be restricted to a limited acreage for familiarization. Many preemergence herbicides are effective only against germinating weed seed and small annual weed seedlings. These chemicals generally do not control emerged weeds and should be applied promptly after planting or to freshly weeded soil. Preemergence chemicals perform best when applied to a moist soil surface or when application is followed by moderate rainfall. Broadcast-overall herbicide application is indicated in plant sugarcane since the conventional ridge-and-furrow planting system does not permit ready tillage of row middles when chemicals are applied to the drill. Less pronounced ridge-and-furrow to almost flat planting are desirable if preemergence herbicides are to be used.. Herbicide rates in this mimeo report are stated on a PER TREATED ACRE basis in terms of the usual commercial formulation. Thorough, uniform ground or weed coverage is necessary. Sprayable (soluble salts, emulsifiable concentrates and wettable powders) and granular formulations (some chemicals) are available. The customary active ingredient content of herbicides mentioned in this report is given in the Glossary along with herbicide nomenclature and terminology. RECOMMENDED herbicidal treatments (chemical, rate, manner of use) are those generally reliable for commercial production when used as specified. Growers without prior herbicide experience should confine initial applications to a li- mited acreage. SUGGESTED herbicidal treatments represent promising materials not fully evaluated locally or materials approved for sugarcane not generally applicable to the Everglades. Growers may wish to use these on a very limited acreage. 1/ A revision of EES64-8 and earlier Mimeo Reports. 2/ Associate Horticulturist, University of Florida, Everglades Experiment Station, Belle Glade, Florida.