When hunting over a scrape thats on the edge of a wood line and rite next to a food source which time is the deer most likley visiting the scrape morning or evening.

Most likely at night, but during the rut they can show up any time of the day. It probably depends on how many does are in the area.

I hunted near a scrap ( 30 yards off to my left ) well within view and I saw more deer ( bucks and does ) checking it in the early morning hours.
But in the late eveing hours only bucks came around which is a good thing in my book.

Studies have shown that the majority of scrape checking by deer is done at night .

i hunted one @ nite saw 4 deer never got a shot though

In my experience, the more out in the open a scrape is, the tendency is for nightime visits only. If you can find one in the middle of a briar patch or other type of heavy cover, you stand a better chance of catching a buck tending in during the daytime.

During the rut basically anytime during the day...

Also after a rain...bucks feel that they have to refresh it. Read numerous articles on this and last year shot a 7 point in WV 45 minutes after it finished raining.

Just based on my experiance with trail cams on scrapes, there was quite a bit more buck activity in the nite time hours. but still some usage in the daytime hours also.
Dan

AM during rut.. ffrrequently...make sure its a fresh scrape...scent it up a bit..then wait