Delivered boron via spray in my case they get it faster and it takes less. Pears had blossom blast and i needed fast boron to stop it from progressing. Completely wiped it out but not instantly as they say it just progresses no further. It takes awhile to see full recovery but i felt i was right within 2 hours of spraying. https://agriculture.borax.com/blog/july-2017/need-a-quick-acting-boron-supplement-spray-it!