If one accidently made a Ha’adama on a fruit and he has another fruit in front of him (which he was planning on eating) can he/does he have to make an Haetz to eat the 2nd fruit?
No, unless you thought the fruit you’re holding is haadama, in which case it won’t cover the other fruit. Sources: שהכל נכלל בברכת בפה״א. ולכאו׳ ל׳ תר״י ברכות…