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It sounds like you have nitrogen burn. This can happen from adding cattle manure to your beds. You could try leaching the soil with lots & lots of water. Try adding peat moss as well. I never use cattle (steer) manure to anything. I use horse manure or llama manure as it isn't so high in nitrogen & won't burn your plants. If you need to purchase manure I know I"ve only seen the steer (fortunately for me my parents & inlaws supply me with horse & llama) only apply it in the fall, work it well into the bed and let it rest for the winter months & it will be safer when spring rolls around.
Good Luck
Earthlady

While the smell of goat dung may repel insects, I cannot say how effective it is for repelling fleas, chiggers, or mosquitoes.

If it was composted (let to site for a bit), it should be fine. The composting process kills bacteria. For the most part, it is highly unlikely that the manure would have the dangerous sort of e. coli. Vegetarian animals, like cows, are far less likely to have it.

The issues you hear in the news come about because of issues like human waste (non vegetarian) making its way into fields or a very rare bit of bad e. coli from a cow making its way into the massive manure vats or machinery used by big business farms. A small bit can then be spread across huge amounts of food, causing widespread problems.

In the home garden, this is unlikely to happen. Good composting and small scale will make it highly unlikely that it will ever cause you any problem.

Short answer is, that you should be fine.

Really, any organic fertlizer can be added, like fish emulsion or kelp. It really depends on what additional nutrients you want to add to your soil.

Add bone meal. This will add phosphorus, which the plants need to produce flowers. These articles will help too:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm