Q.Tomatoes
How can I grow a robust dark green colored, but healthy fruit producing, tomato plant with the exception of a traditional “Miracle Grow” fertilizer? I grow Better Boys as a favorite. I have a soil tester. My plants do ok but have that “spindley” look. Looking for that deep dark green heavy base stalk plant. Have raised beds and amend the soil routinely.
Manure
I would recommend using a fish emulsion.
Below is a link about making your own, but it is readily available at any garden center.
I use it about once a week on my tomato plants. Follow the directions on the bottle for diluting the concentrate and applying to your tomatoes.
I also use epsom salt every couple of weeks. I have great success using these two simple, economical and natural fertilizers on all my vegetable plants.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/fish-emulsion-fertilizer.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/epsom-salt-gardening.htm