God's active involvement in the world is often revealed through dramatic shifts in the natural environment. When human morality fails, the physical reality of the earth can change in response, stripping away agricultural blessings as a direct consequence of human actions.
A lush, fruitful region is typically characterized by abundant crops sustained by nearby rivers and flowing springs [אבן עזרא]. However, divine intervention can completely reverse this prosperity. The rich soil is transformed into a barren, salty wasteland. The local water sources dry up or become too salty for drinking and farming [ביאור שטיינזלץ]. Consequently, the ground loses its ability to be planted, sprout grass, or yield any fruit [רש״י, רד״ק, אבן עזרא ומצודת דוד].
This severe agricultural decline is illustrated by an account of early sages who once visited an area known for producing enormous peaches. When one of the sages returned just a year later, the land's vitality had diminished so drastically that the once-massive fruits had shrunk to a size that could easily fit into the palm of a hand [תורה תמימה].
Such a sudden and extreme shift in nature does not happen without reason. It is a direct response to the wickedness of the people living there. The devastation of a once-fertile landscape serves as a public demonstration of God's watchful eye over those who choose to defy His will [אלשיך]. Ultimately, the ruined earth stands as a measure of strict justice and a clear punishment for the corrupt behavior of its inhabitants [אבן עזרא, מצודת דוד וביאור שטיינזלץ].