Hot answers tagged orla-revai
You asked: Have there been any (scientific) studies that prove the benefits of Orlah? Well, as you will see from the answer to your second question, it's not about benefits. You can see from articles like this one that most fruit trees don't bear (real) fruit for the first 3 - 4 years. You then asked: What is the reasoning behind Orlah ...
Shulchan Arukh YD 294:9 (based on Kiddushin 39a) rules that doubtful (safek) Orlah in the Diaspora is permitted; only certain (vadai) Orlah is prohibited. Even if you know the fruit came from a orchard with Orlah trees, if you don't know which tree it came from then it is permitted. So any fruit you find in the grocery which was not imported from Israel and ...
Since the majority of produce on the market is not Orlah, we can assume that any given fruit etc. it is permissible, using the halachic principle of rov. (Regarding Reva'i, I'm pretty sure it doesn't apply in the diaspora. The mishna in Kiddushin only mentions Orlah.) (I'll try to add an explicit source later).
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