What minimum separation is required before sowing crops next to a full vineyard of two rows of three or more vines?
A full vineyard requires four cubits of separation — the space needed to tend the vineyard. A single row or individual vine requires only six handbreadths, as ruled in Halachot 1–2.
Question 2
If two rows of vines have more than eight cubits between them, how are they legally treated?
When two rows have more than eight cubits between them, they are considered distinct from each other and not a single vineyard. Only six handbreadths are needed from each row, as stated in Halachah 2.
Question 3
Which arrangement of five vines creates a 'small vineyard' requiring four cubits of separation on all sides?
The 'small vineyard' (כרם קטן) is specifically two opposite two with one projecting like a tail, as in Halachah 7. Two opposite two with one in the middle does not form a vineyard and requires only six handbreadths.
Question 4
What is the minimum empty diameter required in the devastated center of a vineyard in order to sow crops there?
The central empty area must be at least sixteen cubits in diameter, allowing four cubits of buffer on each side from the surrounding vines with a remainder available for sowing, as ruled in Halachah 11.
Question 5
A single vine is surrounded by a fence that is ten handbreadths high and four handbreadths wide. What rule applies to the enclosed area?
As stated in Halachah 25, a qualifying fence (ten handbreadths high, four handbreadths wide) surrounding even one vine causes the entire enclosed area to be treated as a vineyard — so one should not sow there, though produce sown with a six-handbreadth separation is not hallowed.