There are good reasons dumping honey tankers out in the open fields is illegal and if it isn't, it should be. You don't drink from your toilet for many of the same reasons. Can you imagine what a deer thinks when they first encounter a dump sight? It must be like 1000 people invaded there field and took a dump all at once.lmao. That'll make 'em wanna stay. [8|]
Now if you have a lot of wood ash, you do have to put it somewhere. Flower beds, food plots, compost pile, somewhere. Did you have the soil tested? Your food plots may not need anything, then again, ash might not be enough or you may have to add other things. The best advise is to get a soil sample and get it tested. The place I get my seed can match seed to my soil and light conditions, and can tell me what's needed in my soil. One of my area's conditions were good for a clover mix, another area only the Small Burnett grew well, different conditions, different plants. Much cheaper to plant what grows best with the least needed.
There is a lot of house hold products that you can use for gardens and plant life also. I can't remember the guys name but he uses things like chewing tobacco tea for bugs, dish soap, beer, what ever problem you have, he had a cheap household remedy. I'm sure there's all kinds of info on the web. As with most things, start from the ground up. Figure out what your soil type is, what you have to work with and go from there.
American by birth, hunter by choice.