Last year when I ran out of other organic material to add to my soil, I stumbled onto a great fertilizer for corn (and probably other plants as well).
I had gone to a friend's farm where they had a barnyard full of composted combined droppings of goats, pigs, horses, cows and various poultry, and I took home a load of it, thinking it would be a wonderful addition to the soil where my sweet corn would be planted, but I ran out of the stuff when there were still two rows left to plant. It was getting dark, the seed had been soaking for too long to wait until the next day, and I didn't have time to run to the store for a bag of compost and still get the seed in the ground before dark.
So, not wanting to plant the corn without some kind of fertilizer, I had to come up with a solution on the spot. I ran into the house and grabbed two cat litter boxes that were filled with "Feline Pine" which is basically pine sawdust made into pellets that dissolve when made wet. The cats generally do not poop in the Feline Pine boxes, preferring instead to use the clay or corn litter for that function, however if they do use the Feline Pine for poo, it's a simple matter to remove the lumps and empty the damp sawdust into 5-gallon buckets.
This "cat dust" is what I mixed into the soil in the last two rows, thinking it would likely prevent the corn from even sprouting but feeling reckless and a bit desperate, I took the chance.
A few weeks later the difference in the two areas of corn was astounding!! The cat-dust rows were much taller, much deeper green, and much healthier-looking than the rest of the corn! This continued being the case all the way to harvest time. The cat-dusted corn produced more abundant, much larger, much more juicy-sweet ears than the rest of the plants, which looked stunted by comparison.
Thus I started saving Feline Pine "used" dust in a plastic bin last summer and it's now in the corn patch that was planted in the last two weeks. But this time I added more stuff to the mix; in a wheelbarrow I blended cat dust with composted cow manure, old composted sawdust from a lumber mill, some human urine, sand, ag-lime and kelp meal to make what I think will prove to be an outstanding fertilizer. The corn is now coming up, and I'm anxiously waiting to see how it does... I put beans and squash between the corn too.