HayKingHV
Biological hay preservative for mould control and high-quality feed designed to work with high volume applicators
Available pack sizes: 1000 L tote.
Available at leading rural retailers, or call 1800 359 559 or contact your sales rep to purchase.
How it works
HayKingHV is a biological hay preservative that works by inhibiting the growth of yeasts and fungi that use up feed energy, heat bales and produce mycotoxins that affect animal health.
Applying HayKingHV at baling suppresses these spoilage microbes, ensuring that the metabolic energy of the forage is maintained at a higher level in the hay. This higher energy hay feeds more animals per tonne of hay, as well as improving storage and palatability.
BioStart HayKingHV is a combination of fermentation extracts that inhibit hay decomposition, ensuring bales store better, remain cooler and results in better feed. Unlike traditional inoculants which rely on introducing live bacteria HayKingHV does not contain live microbes.
Open totes can also be reused the following days or after a break, reducing waste and there is no mixing required.
Benefits of HayKingHV
- Can be used with a range of high-volume applicators
- Makes premium lucerne, oaten, wheat and barley hay and pea straw
- Allows a wider harvest/baling window
- Enables baling at higher moisture levels
- Lowers bale temperature
- Higher nutritional value hay
- More palatable hay
- Easy to apply
- Stores at room temperature
- Non-corrosive to machinery.
Applicators
Our sales team can advise on the wide range of applicators that work with HayKingHV.
Please note: HayKingHV is not compatible with Ascot applicators, which are for low volume rates.
![]() |
Testimonial: Craig Hage, Agricultural Contractor, South Australia Craig Hage likes Biostart’s HayKing because, “There is no stuffing around mixing batches and can be tipped straight into the tank on the baler.” Read more |
![]() |
Testimonial: The Horton Family, Lucerne and Oaten Hay Silage, NSW The Hortons started using SilageKing after a client’s canola crop failed in 2018 and they haven’t looked back, they have been using SilageKing ever since. Read more |
![]() |
Ross Flexman Testimonial – Rural Contractor Magazine, August/September 2023 Edition A HayKing and SilageKing customer started his contracting business two years ago and already has more than 100 customers. Read more |
![]() |
Feed more cows per bale of hay The latest trials of Biostart HayKing reveal how it improves both the preservation and quality of baled hay. Read more |
Directions for use:
Accurately measure the moisture content of high moisture hay before baling using either a moisture meter or carry out a microwave test. Do not use HayKing if moisture levels exceed 24%.
Moisture content | Application rate |
---|---|
Less than 21% | 1 L/tonne |
21–24% | 1.4 L/tonne |
Technical sheet
Download the technical sheet here.
Material Safety Data Sheet
Download the material safety data sheet.
Label information
Download the HayKingHV product label.
Handling precautions
When mixing or applying, avoid contact with skin and eyes. Wear protective clothing, gloves and goggles. Flush applicator thoroughly with water after use. Do not eat or drink while using. Wash hands and face before meals and after work. Wash protective clothing after use.
Storage instructions
HayKing contains fermentation extracts. Store out of direct sunlight and below 30ºC, otherwise, product efficacy may be affected.
Empty container disposal
Triple rinse and return to an approved recycling centre.
Label information
Download the HayKingHV product label.
Technical sheet
Download the technical sheet here.
Empty container disposal
Triple rinse and return to an approved recycling centre.