I would treat it like poultry manure....probably too strong for direct root contact with seedlings or transplants.....better composted, trenched or pitted well beyond the reach of new roots, but accessible as plants established, or tilled in or turned under a few weeks before planting.....
Bat Guano should be hot composted, there are a huge number of pathogens in Bat Guano.
It is so potent as a fertilizer that one teaspoon is usually the highest dose recommended for incorporating around plants.
I would add it to a large amount of composting materials so that the danger of root burn is reduced once the compost is finished.
I have composted Bat Guano only once (I had access to fresh from my bat houses at the time) I added it to layers of green and brown materials at a rate of about one cup per 4 bushels of the other materials.
The finished compost was simply awesome, the plants I used it on grew strong, healthy and out produced all the crops sections I used my regular compost on.
It also really helped the fruittrees (peach and fig) that I spread a 1' layer around.
Think of this manure as a super manure, it is akin to a mix of chicken and sheep manures for "hotness" it is like the brylcream of manures (a little dab will do you).
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