I learned this from a friend (actually a business comeptitor at the time)  Do not slow down or stop what you are doing.

There are a couple exceptions.  One is if the person has something you are really interested in or want to discuss.  The other was customers.  In a farmer's situation that may be landowners or buyers of your products.

If I stopped to see Rick in his office or out in the field he never stopped and barely slowed down.  But if a good customer walked in he stopped what he was doing and was all ears.

Put the same philosphy to use in your operation.