Editing Winter wheat (section)

==United States==
[[File:Wheat fields in the United States 2.webp|thumb|270px|Wheat fields in the United States
{{legend|#99661A|Winter wheat}}
{{legend|#D2AD67|Spring wheat}}
]]
Winter wheat was brought to [[Kansas]] by German-[[Russian Mennonite]]s in the 19th century.<ref>{{cite book|author=Federal Writers' Project of the Work Projects Administration for the State of Kansas|title=Kansas: A Guide To The Sunflower State|year=1939|publisher=The Viking Press|location=New York|page=57|language=EN|url=https://archive.org/details/kansasguidetosun00federich/page/56/mode/2up|isbn=0403021677}}</ref> Bernhard Warkentin and [[Mark A. Carleton]] played a major part in the spread of winter wheat as a commercial crop. Warkentin organized mills in central Kansas and imported seed from [[Ukraine]] to meet growing demand. Carleton worked for the [[United States Department of Agriculture]] (USDA) as a crop explorer. He went to [[Russia]] to find other wheat varieties and worked with [[Kansas State University]] researchers to develop new ones. Winter wheat production quickly spread throughout the [[Great Plains]], and was, as it still is, usually grown using the techniques of [[dryland farming]].{{Citation needed|date=June 2021}}