Probably need more information and others will follow with more ideas and tactics but...
Is this public or private property? Do other people hunt this field or near it? Are other people within earshot calling turkeys as well?
How big is the field? What is the terrain like? Is there some kind of food plot or naturally occurring food source for the turkeys? Is there brush or cover on your side of the field? Is there brush and cover all the way around the field? Do the turkeys stay on the other side of the field the entire day? Do you have any photos of the filed or perhaps some kind of drawn map (nothing that will give away your spot)? Do you have access to the whole field? Where do the turkeys roost? What time do they show up on the other side of the field or is that where they first fly down to?
What style or method are you hunting with? Calling with no decoys? Calling with decoys? Spot and stalk? Run and gun? Different members on here hunt with different styles and can give you different ideas and tips on their preferred style of hunting. I know I've asked you a ton of questions but without more info, people would be giving you generalized ideas or thoughts that might not apply to your specific situation at all. Hopefully this generates a lot of help for you.