Raised bed soil quality
I've been using raised beds for several years to grow veggies in the summer. I used to fertilize every spring with a 2-2-2 organic chicken manure but over time the soil got too "hot" and if affected my yield. The past 2 years I mixed in plain peat moss to tame it down a bit, but then this past summer most of my tomatoes and quite a few bell peppers suffered from blossom rot. I understand that lime should help the rot, but I'm also wondering if I should be adding nutrients of some kind now so that they can fully leach into the soil before planting time arrives?
Multnomah County Oregon
Thanks for your question. Although you're already probably past this stage, here is an OSU Extension article on the topic of raised bed gardens generally: https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/fs270_1.pdf
As to soils (and I appreciate this is long), here is an article explaining soil texture, acidity and soil amendments, whether in raised bed gardens or native soil: http://cru.cahe.wsu.edu/CEPublications/EM063E/EM063E.pdf
Although blossom end rot has a soil acidity component to it, many gardeners experience this problem more due to inconsistent watering than calcium uptake. Here is another article that explains the phenomenon: http://extension.missouri.edu/phelps/documents/Horticulture_News/BlossomEndRot.pdf
S, you are correct that applying chicken manure that has not been adequately seasoned (from 6 to 12 months) adds too much nitrogen to the soil, and can cause soil acidity. The addition of fully aged organic material will provide a balanced, time release of nutrients to your garden. I suggest you get your soil tested by a testing lab before applying anything more. A & L Western Agricultural Labs has a modest fee for the testing and recommendations, and you can find their information here: http://extension.missouri.edu/phelps/documents/Horticulture_News/BlossomEndRot.pdf
I hope this is helpful. Good luck!