Depends on the type and amount of lime. Pelletized lime doesn't really need to be worked in. It's made of very fine lime particles, so rain will work it in fine. If you're going to be applying over 1000lbs an acre, I would work it in. JMO.
How much are you putting down? Is it an established field?
If new field and putting down a couple of tons of ag I would work it in. If putting out a couple hundred pounds of pellet lime I would just throw it on top.
As Omicron said above ^ ^ ^, I've put down a couple hundred lbs. of pelletized lime at camp on top of snow. Snow melt took lime into the soil - no cultivation. It was an established old field that only got mowed for years - and had grayish, wire-y grass & weeds growing in it. Moss too. After pelletized lime-on-snow throw, clovers started popping up that same spring. Moss disappeared, too. FWIW.
