Yes, side dressing corn rows with a high nitrogen fertilizer is far more common than doing it with blood meal. You don't need the phosphorous to be that high so something like 13-0-10 would be fine. Just follow the label instructions for amounts of application.

Dave

I have some good carryover of N with my program. I make just one fertilizer application at planting time...very vigorous growth the whole season. I use some slow release organic at planting time that I till in when making the rows. My tiller leaves 2 perfect wheel tracks straddling the final seed row. I string regular fertilizer in them and chop in some a bit deeper. The corn is planted between these fertilizer strips which are about 7 inches apart.

It's not too late to fert. However, be aware that most of them are slow release, requiring a couple of applicatons of moisture to "free" the active ingredients. I water with soaker hoses and if corn, etc. looks like it needs a "shot," I just connect a "hose end sprayer" between the supply hose and the soaker hose. Fill that with miracle grow, etc. and "whatever" perks back up. Not the appropriate formula, but too old to chase specific formulas which usually are pricey as they don't sell a lot of them. JMHO

It's the nitrogen that you want for sidedress so a better buy would be urea. I've used it but it is best if applied before a rain or incorporated somehow. Commercial applicators used by many farmers use trucks to apply anhydrous ammonia spray when corn is knee high. Often the corn will look burned just after an application but it is the crop yield that makes it worthwhile.

I have used lawn fertilizer for side dressing because of its high N content and readily available.