Kilayim 6:2 - 6:3

מן המדרגה – from a high hill/mound that is made like a kind of embankment (i.e., terrace).

אם כשהוא עומד למטה בארץ – he is able to harvest the grapes that are suspending in the espalier, we view all the espalier as if it is the place of the base of the vines and their roots, and it prohibits four cubits in the field in every direction from the border of the espalier and outward, and specifically ab initio that it prohibits to sow, but it does not sanctify anything other than six handbreadths that this resembles of the remainder of lattice-work of laths which was destroyed in the middle further on in Chapter (7, Mishnah 3).

ואם לאו – that he is not able to harvest all of the grapes until he ascends the embankment/terrace or on a ladder, it is not prohibited to sow other than under the espalier alone, but outside of it, it is permitted, even within four cubits of the base of the vines of the espalier, for since they are standing on the embankment, and such is the Halakha.

אף הנוטע שורה אחת בארץ ושורה אחת במדרגה – from two rows that one needs for it to be considered a vineyard, for now we are not speaking of an espalier, but rather of two rows of vines, two opposite two with one having a tail extending. If the embankment is ten [handbreadths] high, the two rows do not combine to be a vineyard, but rather each and every row has the law of an individual vine. But the Halakha is not according to Rabbi Eliezer.

אפיפירות – wood or reeds that are woven longitudinally and latitudinally and they train upon them tendrils of vines and they cause them to lie on them when they are very long, and if the vine trained upon part of the web, it is forbidden to sow under the remnant and even though it does not have vine-shoots, if he sowed it, he did not sanctify it [the seeds underneath it].

ואם הלך החדש – if the vine grew and produced tendrils and filled up all of the lath.

אסור – the seed that was sown underneath the remnant [is forbidden – as they are sanctified] if he added two hundred after the new growth spread upon them.

וכן המדלה גפן על אילן סרק – its law is like that of the lath, because a person neglects it upon his own vine, and it is as if it is all vines, but a fruit-bearing tree that a person does not neglect upon his vine, that remainder where the vine is not trained over it, is considered on its own and is not like the vine and its remainder to bring seed there.