How to control annual grass weeds in Beans and Maize with Dual Gold 960 EC

DUAL® GOLD 960 EC is a pre-emergence herbicide for the control of annual grass weeds in beans, maize and sugarcane.
Active ingredient
960g/L S-metolachlor.
Formulation
Emulsifiable concentrate
Mode of action
Inhibition of cell division.
Rates of application
Apply 0.6-1.6 litres/ha
Targets
Annual grasses and some annual broad-leaved weeds
Main Crops
Maize, beans, sunflowers, sugar cane, and a wide range of other crops.
KEY BENEFITS
Main product benefits
DUAL GOLD is a top performing corn herbicide you can rely on to deliver;
-Outstanding season-long grass control.
-Flexibility in all maize crop management programs because it offers a wide application window and is the perfect mixing partner for complementary products.
-Excellent selectivity with a superior safety on a wide range of crops.
-Control of annual grass weeds and some annual broad -leavened weeds in pulses, maize and beans mixed crops, and sugarcane.
-Greater Care for the Crops and the Land.

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Please where do I get some to buy in the Eastern region of Ghana or can we have your contacts ?