No. Spread it and leave it. The worms will take care of it. If you
are in the southern hemisphere, add a good mulch over the top since it
will bake over the coming summer and you don't want that to happen.
A lot of times stables use pesticides to keep the flies down, and that
may end up in the manure. Medications taken by the horses may be
present in manure as well. Some people care about this, others don't.
If the manure is composted that will help break that stuff down.
If you live in the northern hemisphere (meaning cold temperatures are
approaching), and the manure is not composted and you are determined
to use it, till it in after spreading it. You want the nitrogen in the
manure to be in the soil, not running off of the frozen ground over
the winter/spring with the rain and snow.
There is a lot on the web about this.
Herbicides also mentioned here:
All these chemicals have finite lifetimes but they vary. I certainly
would not put fresh manure in my vegetable garden. Now I'd worry about
the garden for the rest of my property.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.