generally crops are only seasonal...that being said alot of it is also in the open and/or near roads etc or are high(like corn) that hide deer well so the deer hit them at night most of the time..go drive around in the daylight and youll be lucky to see a deer around here in the field..hit them at night with a spotlight and they are loaded..once in a while they might hit it early morning and late evening..

foodplots on the other hand can provide food all year round which attract deer. some are also more desirable to deer then crops. food plots can also be put in areas deer feel safe. the guys on TV with huge field like plots get away with it because the deer dont see much pressure and feel safe enough to enter them in daylight. if i do plots next year im going to do a few small ones hidden and secluded so the deer feel safe to hit them in the daylight...