Last early winter I worked in a fair amount of woodstove oak ash into my tomato beds and had the by far hugest crop ever, they grew several feet further out of the 4'x8' beds and onto the lawn as it became a jungle. Overall I lost about 10-15% of the fruit as I couldn't even find them until pulling up the plants in early December. So much fruit I took up drying them with great success, each drying flat would hold around four pounds times four drying flats times five sessions, mostly in the truck cab out in the hot sun so we are still enjoying the crop. The season before with no ash additive and with the same amount of plants (10), I barely got a few baskets full.