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 GLOSSARY AND STATUS OF HERBICIDES CLEARED FOR SUGARCANE


 Chemicals recommended or suggested for Florida

Atrazine 2-chloro-4-ethylamino-6-isopropylamino-S-triazine. Geigy "Atrazine 80W",
 an 80% wettable powder. Maximum cleared rate: 5 lb/A per application,
 12 1/2 lb/A per crop.

Dowpon Sodium salt of 2,2-dichloropropionic acid. Dow "Dowpon", 74% acid
 equivalent. Maximum cleared rate.11.1 lb/A acid equivalent. Effective
 against established grasses. Should be used in repeated or split appli-
 cations.

2,4-D Amine salt formulations of 2,4-dichlorophenoxyacetic acid containing
 4 lb/gal acid equivalent. Treatment rates must be adjusted for 6 lb/gal
 formulations. Many suppliers. Maximum cleared rate 2 Ib/A acid equiva-
 lent applied prior to cane emergence or postemergence until layby. Use
 caution to prevent damage to nearby sensitive crops.

Fenac Sodium salt of 2,3,6-trichlorophenylacetic acid. Amchem "Fenac" con-
 taining 1.5 lb/gal acid equivalent.

Karmex diuron, 3-(3,4-dichlorophenyl)-l,l-dimethylurea. duPont "Karmex", an
 80% wettable powder. Maximum.cleared rate for Florida is 4 lb/A pre-
 emergence to weeds after planting with additional postemergence sprays
 to a maximum of 6 Ib/A.

Randox CDAA, 2-chloro-N,N-diallylacetamide. Monsanto "Randox" containing 4
 lb/gal active. Maximum cleared rate is 10 lb/A: do not apply more than
 once per crop nor within 10 months of harvest. Monsanto "Limit" contains
 Randox and 2,4-D acid.

Silvex propyleneglycolbutyletheresters of 2-(2,4,5-trichlorophenoxy)propionic
 acid. Formulations containing 4 Ib/gal acid equivalent are available
 from Amchem, Chipman and Dow. Cleared for use in Louisiana only at
 1 1/2 Ib/A acid equivalent preemergence to cane and weeds or after off-
 barring and until cane reaches 3 to 3 1/2 feet tall. Cleared for use
 in Hawaii only at 5 Ib/A acid equivalent preemergence after planting
 or ratooning and before cane emergence. Use is limited to 2 applications
 per crop. Precautions similar to 2,4-D and 2,4,5-T are required.

Telvar monuron, 3-(p-chlorophenyl)-l,l-dimethylurea. duPont "Telvar", an 80%
 wettable powder. Cleared rate same as for "Karmex".

2,4,5-T amine salt formulations of 2,4,5-trichlorophenoxyacetic acid containing
 4 lb/gal acid equivalent. Treatment rates must be adjusted when 6 lb/
 gal formulations are used. Many suppliers. Rate of 1 lb/A acid equi-
 valent cleared for postemergence use in established cane up to 2 feet
 tall. Use caution to avoid damage to nearby susceptible crops.

Surfactant non-ionic surfactant, Triton X-100, or others of similar activity..