The only way to know what the nutrient load of your soil is would be to contact your Lousianna State University USDA Cooperative Extension Service local office and inquire about having a good, reliable soil test done. Many nutrient deficiencies in plants mimic other nutrient deficiencies and simply looking at a plant is not way to determine that.

Here is a link that might be useful: LSU CES

I don't know how sound my advice is, but I've often used half finished compost. I always dig a trench and pile it underneath then cover it back over.

I've never had a nitrogen deficiency or burnt my plants but I know some people frown on it anyway. I figure the bacteria and worms will do what they do best.

In fact, if you have a volunteer pumpkin seed sprouting nicely in that compost pile, I'd say it's a good sign that your half finished compost won't be bad for your plants.

I had some fabulous tomato plants come up in my compost pile last year. I use half done compost sometimes, or actually mine is about 3/4 done when I use it. Considering the (pardon me) fake purchased soil you are using now, I am sure it would help. I would think it quite definite that you have some deficiencies in that soil mix, that is where a soil test could help.

However, I admit that I never have soil tests done myself. I always add so many things into my beds I figure it is good enough, and my plants grow pretty well. My newest bed contains: cardboad, over 20 types of old produce (mostly fruit, some vegies), wood shavings (from cutting firewood), horse manure, leaves shredded and not of various species, a sprinkle of wood ashes, and crushed egg shells. Some of those layers repeat, the main ingredients are old produce, leaves, and manure (from last year.) In a while I will attempt to stir it a bit and cover it just a smidge with 'topsoil' and compost and then plant. I am excited about all my new space, it is about 25 feet long and 4.5 feet wide and 16 inches tall.

Marcia