The addition of adjuvants on glyphosate enhances the control of aquatic plant Myriophyllum aquaticum (Vell.)
Cerveira Junior, W.R. Silva, A.F. Cervoni, J.H.C. Cruz, C. Pitelli, R.A.
The addition of adjuvants on glyphosate enhances the control of aquatic plant Myriophyllum aquaticum (Vell.)
Publicação on-line; 28 ref.; 9 tables; Summary (En)
ABSTRACT
Background: Knowledge about the action of glyphosate alone and
associated with adjuvants in the effectiveness to control aquatic plants is
important in the decision-making on its use.
Objective: This study aimed to evaluate the effectiveness of glyphosate
and five adjuvants in the control of Myriophyllum aquaticum.
Methods: Glyphosate (Rodeo®) at doses of 1.5, 3.5, 5.5, and 7.5 L ha-1
was sprayed alone and associated with Aterbane® BR, Veget’oil®, Dash®
HC, Assist®, and Agral® (0.5% v v-1), in addition to the control, with a
spray solution volume of 200 L ha-1. The effectiveness of control was
evaluated using the scores of a visual scale at 3, 7, 15, 21, 30, 45, and
60 days after application (DAA), regrowth, and dry matter accumulation
at 60 DAA.
Results: The best effectiveness of control of the glyphosate alone was
85% at the dose of 7.5 L ha-1, increasing to 100% when associated with
Aterbane® and Veget’oil®. The control reached 100% for all glyphosate
doses associated with Dash®. Moreover, glyphosate at the dose of
7.5 L ha-1 associated with Assist® provided a 98% control, while
glyphosate doses of 3.5, 5.5, and 7.5 L ha-1 associated with Agral®
provided a 100% control. Glyphosate at doses of 5.5 and 7.5 L ha-1
associated with Dash® and Agral® was more effective in reducing the
regrowth and dry biomass (100%). Thus, glyphosate + Dash® and Agral®
promoted the highest control (above 95%), the lowest regrowth, and the
highest reduction in the dry biomass of M. aquaticum.
Conclusions: The addition of Aterbane® BR, Dash®, and Agral® to
glyphosate improved the effectiveness of control of M. aquaticum and
contributed to reducing the applied herbicide dose.
Keywords:
chemical management
parrot feather watermilfoil
aquatic plants
PLANTA AQUÁTICA
CONTROLE QUÍMICO
HERBICIDA
ERVA DANINHA
The addition of adjuvants on glyphosate enhances the control of aquatic plant Myriophyllum aquaticum (Vell.)
Publicação on-line; 28 ref.; 9 tables; Summary (En)
ABSTRACT
Background: Knowledge about the action of glyphosate alone and
associated with adjuvants in the effectiveness to control aquatic plants is
important in the decision-making on its use.
Objective: This study aimed to evaluate the effectiveness of glyphosate
and five adjuvants in the control of Myriophyllum aquaticum.
Methods: Glyphosate (Rodeo®) at doses of 1.5, 3.5, 5.5, and 7.5 L ha-1
was sprayed alone and associated with Aterbane® BR, Veget’oil®, Dash®
HC, Assist®, and Agral® (0.5% v v-1), in addition to the control, with a
spray solution volume of 200 L ha-1. The effectiveness of control was
evaluated using the scores of a visual scale at 3, 7, 15, 21, 30, 45, and
60 days after application (DAA), regrowth, and dry matter accumulation
at 60 DAA.
Results: The best effectiveness of control of the glyphosate alone was
85% at the dose of 7.5 L ha-1, increasing to 100% when associated with
Aterbane® and Veget’oil®. The control reached 100% for all glyphosate
doses associated with Dash®. Moreover, glyphosate at the dose of
7.5 L ha-1 associated with Assist® provided a 98% control, while
glyphosate doses of 3.5, 5.5, and 7.5 L ha-1 associated with Agral®
provided a 100% control. Glyphosate at doses of 5.5 and 7.5 L ha-1
associated with Dash® and Agral® was more effective in reducing the
regrowth and dry biomass (100%). Thus, glyphosate + Dash® and Agral®
promoted the highest control (above 95%), the lowest regrowth, and the
highest reduction in the dry biomass of M. aquaticum.
Conclusions: The addition of Aterbane® BR, Dash®, and Agral® to
glyphosate improved the effectiveness of control of M. aquaticum and
contributed to reducing the applied herbicide dose.
Keywords:
chemical management
parrot feather watermilfoil
aquatic plants
PLANTA AQUÁTICA
CONTROLE QUÍMICO
HERBICIDA
ERVA DANINHA
BINAGRI