Don't leave your dog in the woods. It's not humane. This shouldn't even have to be said. Just don't do it. Your risking more jail time. The dog can be tied back to you, especially if the rescue chips them or forwards your info to your city/county for dog licensing.
Plus the dog is going to be barking and crying like crazy at nothing all the while being terrified and alone. It can attract predators and hikers who will hear the dog crying none stop. If a person was to walk up near the dog, it's not going to defend your crop. Its going to be happy, wagging it's tail, while hoping it will be fed and given a new home. You can hear a dog crying for miles. Plus it can also get ticks, fleas, heart worm, and so many other illnesses. It's also very likely to attack your weed plants. If it eats to much it can get really sick, dehydrate, or even have a seizure. Dogs aren't people. We can handle being high. Dogs can't.
Even if you visit it for an hour a day, every day, that's really nothing. The dog won't build a strong enough bond with you and won't make a good pet. And it's even more dangerous if you have kids. You don't want a dog that one day bites your kids simply because it wasn't taught proper bite inhibition, socialization, and good puppy manners.
Most trainers and vets don't really like owners keeping their dogs in their backyards 24/7. These dogs are far more likely to develop behavior problems and fear aggression.