Adding soil conditioner to strawberry bed

I'm adding some strawberry plants to this raised bed. The bed has old compost in thats been in there for ages, can a add and mix some Gro-Sure Peat Free Farmyard Manure then plant now. I know people say fresh manure can burn plants but will that be the same with this product.
The bed

The manure

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You could get away with fresh manure if you left the bed over winter. If you need to plant now, use that product or just some BFB