In this bulletin are reported the results secured by Iowa farmers in comparing some of the pure-line pedigreed varieties of oats, which have been developed at the Iowa Agricultural Experiment Station, with the commercial varieties grown in various sections of the state. The farmers carrying on this cooperative experimental work to find the best oat varieties for the different soils and sections of Iowa are well distributed over the state.

Comparison of oat varieties at the Iowa station began about the time that field investigations were first established and the new, pure-line, pedigreed varieties which the farmers have been testing are the result of many years of variety comparison and selection. Old varieties were dropped from the tests as their lack of merit became established and new ones were substituted. The results of the first tests were reported in 1889. Later reports were made in 1881, 1908, 1912, and 19181.



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