Soil test results indicated that I had too much fertilizer. I stopped fertilizing, still nothing grows. The soil test information provides valuable information in identifying your problem. You say too much fertilizer has been applied. That means there is an excess of fertilizer and natural soil salts in the soil.
Fertilizers can create salty conditions in the soil.
Beets and some other garden crops, such as beans, are sensitive to excess salt in the soil, especially while young. Tomatoes and some other garden crops may to be less sensitive. If you choose to stop using commercial fertilizer and change to manure, you can actually aggravate the problem even more rapidly. Unless the manure has been well composted and exposed to moisture so that the salts common in manure have been washed away, manure can rapidly increase the saltiness of the soil. Salts can be leached from the soil if the garden area is heavily irrigated several times and the soil allowed to drain well below the root zone of the crops.