BHA’s Di-Bak H (Hexazinone)
Benefits of BHA technology
- Safe delivery of herbicides directly into tree stem through injecting capsule
- Capsules contain powdered herbicide which is released once injected
- No exposure of chemicals to the user
- Safe to use all year round and near waterways
- Easy delivery through hand-held applicator
- It is active against many broadleaf weeds and some woody weeds but has little activity against grasses.
- It is readily absorbed through roots and leaves and has been successfully applied as a stem injection or as cut and spray on larger susceptible trees.
- Considered highly active against eucapylpts while many pines are tolerant.
- Stem injections can be applied any time of year but are preferable during times of good sap flow.
- This herbicide is only translocated apoplastically (upwards).
- It is water soluble and does not readily bind to soil so can be a threat to ground water.
- It is degraded slowly by microbial action and is also resistant to photolysis or general soil chemical reactions.
- The half-life in soil is at least 90 days.
How does Hexazinone work?
- Hexazinone is a triazinone inhibitor of Photosystem II (Herbicide Group C) of photosynthesis.
- It interferes with electron transport from QA to QB leading to electrons being diverted to creation of toxic reactive molecules leading to death of chloroplasts.
- This starts a chain reaction leading to death of cells and tissue.
- It is systemic and moves readily through the xylem to the foliage.
The concentration of active Hexazinone in DI-Bak H means it can work directly on the weed stem or trunk in a targeted manner with maximum efficacy.
Di-Bak H is comprised of 750g/kg HEXAZINONE in a capsule dose (350mg per capsule).