Translation:Shulchan Aruch/Choshen Mishpat/324

Paragraph 1- If one leases a field from another to plant barley, he may not plant wheat because wheat weakens the ground more than barley. If he leased to plant wheat, he may plant barley. If he leased to plant legumes, he may not plant grain. If he leased to plant grain, he may plant legumes. There are those who say the reverse: if he leased to plant grain he may not plant legumes, whereas if he leased to plant legumes he plant grain. In Babylon and other similar places he may not plant legumes because legumes weaken the ground there. ''There are those who say the reverse and that in Babylon he may plant whatever he wants. There are those who say this is only with respect to leasing. If one accepted a field, however, he may even deviate to something that weakens the ground. There are those who disagree and hold in the case of one who accepts he may not even deviate to something that does not weaken the ground.''