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Kenpra Herbicide - General Instructions

Kenpra is a dry flowable granule that disperses in water and is designed for selective post-emergence control of nutgrass in Sugarcane, Corn/Maize, and Sorghum. It is also effective for the selective post-emergence control of nutgrass and mullumbimby couch in Turf. Additionally, it can be used for the control of nutgrass in Cotton using shielded sprayers. Here are the general instructions for the use of Kenpra:

Application Guidelines:

• Apply Kenpra to actively growing weeds when new growth has reached a minimum of 5cm for nutgrass or 2cm for mullumbimby couch.
• Symptoms of weed control include gradual yellowing of foliage and seed heads followed by desiccation.
• Initial symptoms may take 7-10 days to be noticeable, with full effects occurring 4 to 6 weeks after treatment.
• Apply follow-up treatments if sufficient new growth warrants re-treatment.
• Irrigation or rainfall within two hours of application will reduce control. Drought stress after treatment may also reduce control.

Resistant Weeds Warning:

• Kenpra Herbicide inhibits acetolactate synthase and belongs to the sulfonylurea group of herbicides (Group B).
• Some naturally occurring weed biotypes resistant to Kenpra Herbicide and other Group B herbicides may exist.
• Resistant weeds can dominate the weed population if Group B herbicides are used repeatedly, and they will not be controlled by Kenpra Herbicide.
• Since the development of resistant weeds is difficult to detect prior to herbicide use, Kenso accepts no liability for losses resulting from the failure of Kenpra Herbicide to control resistant weeds.

Mixing:

• Kenpra is a dry flowable granule that disperses in water.
• Add the measured amount gradually to a part-filled spray tank while maintaining continuous bypass agitation.
• Add the surfactant near the end of the filling process to avoid excessive foaming.
• Remove the hose from the mixing tank immediately after filling to avoid siphoning back into the water source.
• If allowed to stand, ensure that the mixture is thoroughly agitated before re-commencing spraying.
• Use the mixture within one day.

Sprayer Cleanup:

• Before application of products other than Kenpra, clean the sprayer by draining the tank and flushing equipment with water for a minimum of 10 minutes.
• Fill the tank with clean water and add chlorine bleach (4% chlorine) at the rate of 300mL/100L of water. Flush through the boom and agitate for 15 minutes.
• Repeat the chlorine bleach step.
• Remove all nozzles and screens and clean thoroughly.
• Rinse the tank thoroughly with clean water and flush through hoses and booms to remove traces of chlorine bleach.
• Do not use chlorine bleach with ammonia.

Surfactant Addition:

• Kenpra must be applied with a non-ionic surfactant to ensure uptake.
• Use 200mL/100L of a 600g/L non-ionic surfactant or equivalent.
• For hand-gun or knapsack application, add surfactant at 20mL/10L of water.

Compatibility:

• Kenpra is compatible with various products, including Ken-Up Aquatic 360, Ken-Up 450 CT, Kenso Agcare Max Out 540, Ken-Up Dry 680 WG, Ken-Grass 375, dicamba/MCPA, bromoxynil/MCPA mixtures, and amine formulations of 2,4-D.
• Read and follow all label directions, restraints, plant-back periods, withholding periods, regional use restrictions, and safety directions for tank mix products.
• Tank mixing with paraquat or ametryn may result in reduced weed control.
• Organophosphate insecticides should not be tank-mixed or applied 7 days prior or 3 days after the application of Kenpra, as severe crop injury may result.