It is not in the American interest to let Iraqis go hungry. The news of imminent crop failure is not only an ill omen for Iraq. It is, to some extent, a further unintended consequence of Saddam Hussein's aggression and the gulf war.
The worst problem showing up, according to reports, is the winter wheat crop in the north. That is the Kurdish homeland where farmers fled their land before army onslaughts, where guerrillas roam by night and soldiers by day. The chief reason for bad conditions is likely the absence of the farmers. The biggest sufferers of the coming wheat famine would surely be those very Kurds, should they be persuaded by deals reached in Baghdad to return to their homes.
The official Iraqi explanation of poor crop yields is U.S. refusal to allow planes to fly for crop-dusting, which cannot be taken at face value. Iraq lacks the foreign exchange with which to buy the fertilizer with which to crop-dust. Previous spraying in the north included the poison gassing of Kurds -- by crop-dusting planes -- in 1988. The greater cause of crop failure is certainly the government attacks on the Kurdish people who were doing the farming. Barley and other crops in the fertile Euphrates Valley are also failing. Iraq's military draft and distortion of the economy for aggression surely had much to do with that.