Too much store bought manure put in vegetable garden
Your question is a good one but difficult to answer. Typically water and time are needed to break down and leach nutrients and salt from soil. Without knowing how much manure was applied and it's nutrient analysis, I am not sure how to fix the situation. It could be that too much was not applied. However, if possible I would recommend that you relocate the garden site this year to be safe. MOST LIKELY, the site with over applied manure will be safe for planting next year.
Give me a call at 859-623-4072 to talk more specifically about this.