The Rambam rules that just as there is no law of ma'aser sheni in Syria, there is also no law of neta rvi'i in Syria (Halacha 1).
Question 2
What must one add when redeeming fourth-year fruit for oneself?
Like with ma'aser sheni, one redeeming neta rvi'i for oneself adds a fifth to the value of the fruits (Halacha 2).
Question 3
What did the sages establish about fourth-year grapes within one day from Jerusalem?
The sages established that grapes within one day from Jerusalem should be brought there to beautify the markets of Jerusalem with fruits, as those who made wine in purity did not sell grapes in the market (Halacha 5).
Question 4
How many days before Rosh Hashanah must the tree be planted for that year to count?
It takes 30 days to be considered a year, plus 14 days for absorption — a total of 44 days before Rosh Hashanah (Halacha 9).
Question 5
What is the status of grape seeds and skins regarding orlah and fourth-year fruit?
Grape seeds and skins are prohibited in orlah because orlah is forbidden for benefit, and they are permitted in neta rvi'i, which is merely a prohibition of eating and they are not considered food (Halacha 13).