Forge 36.1.2
pamhc2crops-1.16.3-1.0.1

With Right Click harvesting enabled, you can't use fertilizers such as industrial foregoing fertilizer on crops that aren't fully grown.
Bonemeal works fine

Reproduce:
Enable Right Click harvesting in config
plant a crop, I used potatoes, use industrial foregoing fertilizer on crop, nothing happens. Expected crop to grow same as using bonemeal

I think its line 52 of CropHarvest.Java: if hand is not empty then cancel the event ?

Instead of generating the drops yourself, In my mod I use worldIn.destroyBlock. I'm new to modding so don't know if this is correct. But it plays the sound, particles and makes the drops

Instead of checking for just bonemeal maybe check if the item is in Forge:fertilizer tag then return?

I was going to report an issue that seems tangentially — if not exactly — related to this one. See here for more information.