Tulips, ESP the modern ones, do seem susceptible to virus, etc. but I think the best way is to plant for one year and then discard them or dig them up and store. The old varieties, usually the yellow and red, seem to thrive regardless. Or buy hyacinths instead.....great scent as a bonus. Super noodle, bagged manure can be very strong. In my naivety years ago I put loads into the soil in my small greenhouse for my tomatoes and then top dressed with 3" of manure. My tomatoes were quickly gassed after a few hours of hot sunshine. We all learn, don't we?