Too much of fertilizers, (or nutrients, as we usually hear of them here), will harm or kill a plant. If you were to over fertilize just before harvest, there are two groups of people who think either the bud will taste like crap, or the other thinks it doesn't change a thing. Both groups have convincing reasoning.
I've never seen any studies on this in regards to a taste difference in a lab environment grow of two identical groups.
If anyone has, I'd love to read it. I've heard so many "Well, I did it both ways once" stories, that it's about 50-50 if it does anything.
Oh yeah, and if anyone hears of a study being done, I volunteer to be a taste tester. I can work about 18 hours a day...bbbzzzzzzzzzzzzzzzzzzz