Sifra: It implies that the La'av of Orlah will not come into effect until they cross the Yarden and arrive in Eretz Yisrael - and not from the time that they arrive in Eiver ha'Yarden.

Yerushalmi Orlah, 1:2 #1: It implies that what Nochrim planted in Eretz Cana'an before Yisrael entered the land is not subject to the Dinim of Orlah. ¹

Yerushalmi Orlah, 1:2 #1: It implies that, once they enter Eretz Yisrael, the trees that they plant will be subject to Orlah - even before they have conquered the land and distributed it. ²

Oznayim la'Torah: Yisrael planted figs, grapes and pomegranates in the desert, which grew the same day that they were planted. ³ - For that to have any Halachic significance ⁴ it is obvious that the Din of Orlah did not apply to them. Therefore the Torah found it necessary to write "ve'Chi Savo'u el ha'Aretz - even though until then they were Patur.

Refer to 19:23:151:1.

Oznayim la'Torah: Because in those cases, Hashem is demanding something in his capacity as Master of the land, as opposed to here, where He is issuing a prohibition, and where consequenly, the statement "Ani Hashem Elokeichem" (in Pasuk 25) is more appropriate.

Rashi, Ramban and Rashbam: It means that 'one should enclose ¹ the fruit on the tree.' ²

Targum Onkelos and Targum Yonasan - It means that one should distance oneself from Orlah-fruit.

Oznayim la'Torah (citing the Taz in Yoreh De'ah, 234:19): To draw a distinction between the two Dinim, inasmuch as Safek Orlah is Asur by the former but Mutar by the latter. ¹

Rashi: From the time of planting ¹ - as is evident from the Pasuk itself.

Rashi: It implies that the fruit that is detached during the first three years remains forbidden even after three years have elapsed. ¹

Ramban #1 and Moshav Zekenim: In order to honor Hashem by bringing the first-fruit ¹ - of the fourth ² year to Hashem (to eat it in Yerushalayim) before eating of it oneself, as the Pasuk goes on to explain.

Ramban #2 (citing the Rambam in Moreh Nevuchim): Because the sorcerers of that time would pick the fruit prematurely and bring it as a sacrifice to their gods. Therefore to counter that practice, we pick the fruit when it is plentiful, and sacrifice it to Hashem.

Oznayim la'Torah: It is a sort of Kaparah on the sin of Adam ha'Rishon, who could not even wait until nightfall to make Kidush over a cup of wine from the Eitz ha'Da'as ³ - but drank the cup of wine that Chavah gave him during the day. ⁴

B'rachos, 36b: "Eitz Ma'achal" implies tree whose bark and fruit have the same taste in the Din of Orlah, with reference to a pepper-tree ¹ - to teach us that Eretz Yisrael lacks nothing, ² not even pepper-trees. ³

Yerushalmi, Orlah, 1:1: To confine Orlah to trees that are planted for food, but not if they are planted for building or for firewood. ⁴

Brachos, 36b: It incorporates in the Din of Orlah the pits, the peel and the flowerry substance that are found on various species of fruit and that are secondary to it - because they protect the fruit.

B'rachos, 36b: It incorporates in the Din of Orlah grapes that the wind detached prematurely and half-ripe grapes.

Chulin, 121a: It confines Malkos for Orlah to the juice of grapes and olives ¹ - to preclude the juice of all other fruit. ²

Sifra: It comes to exempt from the Din of Orlah the leaves, the branches (or sprouts), juice from the vine and the sap of budding berries.

Rosh Hashanah, 9b: We learn via a Gezeirah Shavah "Shanah" "Shanah" from the Passuk in Eikev "me'Reishis Shanah" that the Rosh Hashanah for planting ¹ is the first of Tishri. ²

Sifra: To teach us that the fruit of Orlah does not become permitted after the three years have terminated. ¹

Pesachim, 22b: To include a communal tree in the Din of Orlah. ¹ T

Pesachim, 22b: To teach us that Orlah is Asur be'Hana'ah. ¹

Moshav Zekenim #1: It follows "ve'Nislach Lo" - in Pasuk 22, to hint that 'Someone who dwells in Eretz Yisrael dwells without sin'. ¹

Kidushin 38b: Refer to 19:23:2:1.

Refer to 19:23:0.1:1-3.

Rosh and Moshav Zekenim #1: It implies that it is a Mitzvah to plant fruit trees, ¹ even if one is old and might not live to eat from the fruit. ²

Moshav Zekenim #2 (citing the Yerushalmi Orlah 1:1) and Seifer ha'Mitzvos: It implies that what a Nochri planted ³ is not subject to Orlah. ⁴

Rosh Hashanah, 9b: It includes Mavrich (grafting) and Markiv (transplanting a branch that is still atached to the tree into the ground) in the La'av of Orlah. ⁵

Sifra and Sotah, 43b: It precludes Mavrich (grafting) and Markiv (transplanting a branch that is still atached to the tree into the ground) from the La'av of Orlah.

Yerushalmi Orlah, 1:2: It incorporates in the Din of Orlah wherever the tree is planted - even inside the house. ⁶

Tosefta Orlah, Perek 1: It precludes a tree that grew by itself, from the Din of Orlah. ⁷