It is the ONLY diamond producing state.
Iowa
Indiana
The top state in the U.S. for producing rice is the state of Arkansas. The second largest producer of this crop is California.
Minnesota
TEXAS
Texas is the top natural gas producing state, at least in the year 2007
The top beef cattle producing state is Texas.
Minnesota, North Carolina and Arkansas.
The top cattle producing states (in order) are the following:TexasNebraskaKansasOklahomaCaliforniaMissouriS. DakotaIowaWisconsinColoradoMinnesotaS.DakotaIllinoisOhioMichiganIndiana
The top five oil producing states in the United States are Texas, North Dakota, New Mexico, Oklahoma, and Alaska. Texas is the largest oil producing state, producing more oil than any other state in the country.
Since Illinois is the second-highest corn producing state in the United States, any state except Iowa (which is the top corn-producing state of the US) would qualify as an answer to this question, from Nebraska (third-highest corn-producing state) to Utah (38th-highest corn producing state).