Yeah commonly shown as N-P-K on most fertilizer bags. Though nitrogen fertilizer could mean nitrogen rich fertilizer. Which is good for most leafy plants, or plants in their vegetative stage. But if it's just nitrogen then this author really knows nothing of planting.

it could also be psychological. Goblins arent too smart(atleast in most lore). Though they can still think and have some form of sentience. Just think about it. You see something that's supposedly dead moving around? Your most likely gonna trip balls lol. I bet if 7 friends walked outside and saw 4 supposedly dead corpses walking around most people would nope tf out 🙃

for a normal human it's a dagger. for s tiny goblin the size of a toddler it'd like a short sword lol 😆