Its all relative, but a small clearing or log road in a mature woods generally will not get enough sunlight to produce serious amounts of vegetation. Now if the clearing is bigger than 1/2 acre or the logging road is clear-cut 30 ft on either side - then thats another story. - Again I'm talking about mature woods (50-60 yrs old+).

Check out North-Jeff's picture on the New Clearing post - it show a nice road plot through a young woods: [link]http://forum.hunting.net/asppg/tm.asp?m=709111[/link]

In the picture below - the woods is 40 yrs old, and the road is not trimmed oneither side:



It will not sustain a "crop". - Oh we've planted Rye here - and it will grow in September/October once the leaves start to drop - but it stays thin - and during the summer - very little growth occurs with any planting in the summer on most of the 300 yd roadway - we just leave it bare now.