The land you are entering to take over is not like the land of Egypt, from which you have come, where you planted your seed and irrigated (wateredst, KJV) it by foot as in a vegetable garden. Deut.11:10

Agriculture in Egypt depended on irrigation.

Irrigation by foot may refer to the ancient method of raising water from the Nile or from canals that were cut through Egypt, which was by means of waterwheels turned by foot or by turning the water into small channels by foot. Palestine, by contrast, is watered by rain.