Halakhah su Deuteronomio 22:9

To not plant forbidden mixtures in a vineyard: To not plant types of grain in a vineyard, and [also] not hemp or arum (loof). And this type of forbidden mixtures is called forbidden mixtures of the vineyard (kilayei hakerem). And about this is it stated (Deuteronomy 22:9), "Do not plant your vineyard a forbidden mixture." And they, may their memory be blessed, said (Sifrei on this verse), "[Why] do I need this, is it not stated (Leviticus 19:19), 'your field you shall not plant a forbidden mixture?' It teaches that anyone who keeps a forbidden mixture in his vineyard transgresses two negative commandments." And they, may their memory be blessed, explained (Kiddushin 39a) that forbidden mixtures of the vineyard are two types of grain seeds with grape seeds. And this is what Rabbi Yishaya said, "He [has not transgressed] until he plants wheat and barley and grape-seed in one fall of the hand," as this is what is implied to them by "forbidden mixtures in a vineyard," meaning to say that you need a forbidden mixture besides "your vineyard."

To not eat forbidden mixtures of the vineyard: That we are forbidden from eating forbidden mixtures of the vineyard only. And we have already explained in the previous commandment what forbidden mixtures of the vineyard are. And about this is it stated (Deuteronomy 22:9), "lest it be set aside (tikdash), the crop, the seed that you planted and the produce of the vineyard." - and they, may their memory be blessed, explained (Kiddushin 56b), "Lest it be incinerated by fire (tukad esh)," which is to say that it is not fitting that there be a purpose [from it], as it should all be forbidden in benefit. And the proof that there is a negative commandment in it, is that it is written in its prevention, "lest (pen)." And they, may their memory be blessed, said (Eruvin 96a) that in every place that it states, "guard yourself," "lest," and "do not" (heeshamer, pen ve-al), it is certainly a negative commandment.