Adam Clarke on 2 Kings 3:25

On every good piece of land - On all cultivated ground, and especially fields that were sown.

Only in Kir-haraseth - This was the royal city of the Moabites, and, as we learn from Scripture, exceedingly strong; (see Isa 16:7, Isa 16:11); so that it is probable the confederate armies could not easily reduce it. The slingers, we are informed, went about the wall, and smote all the men that appeared on it, while no doubt the besieging army was employed in sapping the foundations.