LAQIYA, Israel -- A rectangle of brown, dead stalks lies sadly among surrounding fields of newly sprouting wheat. At the edge of the ruined field, a sign with a skull and crossbones warns, Danger Poison. The field was among a number of plots ruined by Prime Minister Ariel Sharon's government, which last month sent out crop-dusters with herbicides to destroy 3,000 acres of wheat planted, without authorization, by Bedouin farmers in the arid Negev region of southern Israel. The destruction has brought to the surface a long-simmering feud between the small, impoverished Bedouin population and the government in Jerusalem. The...