My advice would be to read a few more threads in this forum...lots has been said already about converting to organic.

I would stay away from the MG organic fertilizer. Why not start with a bag of compost used as a mulch. Depending what you are growing, using fish and seaweed will help more than just fish alone.

Ron

The only way to know what the soil might need is with a good, reliable soil test.
What is the soils pH?
How well does the soil drain?
How much organic matter is in the soil?
What kind of life do you find in the soil?
If the soil has a pH between 6.2 and 6.8 and has a good balanced nutrient level then puting any fertilizer down is a waste of your money, time, and effort. If you add some fertilizer that is not needed you can create problems you don't want.

Hows your drainage?

Also how often did he fertilize the past couple years?

You are probably going to have to leach the heck out of it.

soil is ok, i don't think they fertilized it too much, but with all the rain we've had recently it may have already been leached.
I, too, was thinking of going fish emulsion and kelp too. I'll have to get the kelp online...
btw, I'm planting okra, corn, beans, potatoes, zucchini at this spot.
my other garden (organic 4 yrs now) will have various herbs, tomatoes, tomatillos, lettuce, celery, etc. in it.