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Weed Control in Centipedegrass

Dr. Tim R. Murphy
Extension Weed Scientist
University of Georgia
Griffin, GA

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TABLE OF CONTENTS

Weed Control in Centipedegrass Sethoxydim - Vantage - Centipedegrass Vantage - Centipedegrass Vantage Bahiagrass Suppression Turfgrass Tolerance to Herbicides Turfgrass Tolerance to Herbicides Tolerance to Centipedegrass to Atrazine Turfgrass Tolerance to Herbicides Common Lespedeza Control with Atrazine Tolerance of Newly-sprigged Centipedegrass to Atrazine and Simazine Tolerance of Centipedegrass to PostEmergence Herbicides Tolerance of Dormant Centipedegrass Tolerance of Centipedegrass at 50% Greenup Tolerance of Centipedegrass at 100% Greenup Tolerance of Dormant Centipedegrass to PostEmergence Herbicides - 1987 Tolerance of Centipedegrass at 50% Greenup to PostEmergence Herbicides - 1987 Tolerance of Centipedegrass at 100% Greenup to PostEmergence Herbicides - 1987 Tolerance of Centipedegrass to 2,4-D and 2,4-D + 2,4-DP Tolerance of Centipedegrass to 2,4-D and Trimec Classic

SLIDE CONTENTS

WEED CONTROL IN CENTIPEDEGRASS Dr. Tim R. Murphy Extension Weed Specialist University of Georgia Griffin SETHOXYDIM - VANTAGE - CENTIPEDEGRASS CONTROLS ANNUAL GRASSES SUPPRESSES BAHIAGRASS NO ANNUAL BLUEGRASS CONTROL NO SEDGE (NUTGRASS) CONTROL VANTAGE - CENTIPEDEGRASS NO COC NEEDED ESTABLISHED SEEDLING - 3 IN. STOLON GROWTH DELAY MOWING 7 DAYS BEFORE AND AFTER APPLICATION VANTAGEBAHIAGRASS SUPPRESSION 2.25 pts./acre DELAY MOWING - 7 DAYS BEFORE AND AFTER REPEAT APPLICATION - 10 TO 14 DAYS ACTIVELY-GROWING TURFGRASS TOLERANCE TO HERBICIDES HERBICIDE CENTIPEDEGRASS BERMUDAGRASS ATRAZINE T D BENTAZON T T BENTAZON + ATRAZINE T S-I MSMA/DSMA S T SETHOXYDIM T S TURFGRASS TOLERANCE TO HERBICIDES HERBICIDE CENTIPEDEGRASS BERMUDAGRASS IMAZAQUIN T T HALOSULFURON T T TRICLOPYR + CLOPYRALID T I METRIBUZIN NR T SETHOXYDIM T S TOLERANCE TO CENTIPEDEGRASS TO ATRAZINE ATRAZINE - 2.0 qts./acre QUALITY1 JAN + APR 6.8 APR + MAY 6.7 JAN + APR + MAY 6.7 APR + MAY + JULY 6.7 APR + JULY 6.6 MAY + JULY 7.0 MAY + JULY + AUG 7.0 JULY + AUG 6.9 NO HERBICIDE 6.4 1SEPTEMBER TURFGRASS TOLERANCE TO HERBICIDES HERBICIDE CENTIPEDEGRASS BERMUDAGRASS 2,4-D I-T T MCPP T T DICAMBA I-T T 2,4-D+MCPP +DICAMBA S-I I-T MCPP+2,4-D +DICAMBA I-T T Common Lespedeza Control with Atrazine % Control Atrazine 2.0 qts./acre TOLERANCE OF NEWLY-SPRIGGED CENTIPEDEGRASS TO ATRAZINE AND SIMAZINE TOLERANCE OF CENTIPEDEGRASS TO POSTEMERGENCE HERBICIDES Tolerance of Dormant Centipedegrass Tolerance of Centipedegrass at 50% Greenup Tolerance of Centipedegrass at 100% Greenup TOLERANCE OF DORMANT CENTIPEDEGRASS TO POSTEMERGENCE HERBICIDES -1987 TOLERANCE OF CENTIPEDEGRASS AT 50% GREENUP TO POSTEMERGENCE HERBICIDES -1987 TOLERANCE OF CENTIPEDEGRASS AT 100% GREENUP TO POSTEMERGENCE HERBICIDES -1987 TOLERANCE OF CENTIPEDEGRASS TO 2,4-D AND 2,4-D + 2,4-DP 2,4-D at 1.5 pts./acre 2,4-D at 0.75, 2,4-DP at 0.75 lb/A 1979 - June + July 1980 - July + Aug. % Injury TOLERANCE OF CENTIPEDEGRASS TO 2,4-D AND TRIMEC CLASSIC 2,4-D at 1.5 pts./acre Trimec Classic at 3.25 pts./acre 1979 - June + July 1980 - July + Aug. % Injury