THE DRY FARMING CONGRESS. 



165 



merits with the collaboration of the Bureau of Chemistry of the Depart- 

 ment, and in co-operation with State Experiment Stations, for the pur- 

 pose of obtaining information on this subject. 



Seed Breeding. 



"The experiments consist in growing winter wheat (from the same 

 original seed) in each of three typical and dissimilar localities, Kansas, 

 Texas and California; and also spring wheat in South Dakota, Kansas 

 and California. Seed of the crop from each locality are sent to the 

 other two and there grown along side of the continuously-grown seed. 

 We thus have three plots at each stati'on, all from the same original seed; 

 one plot grown continuously at that point, and the other two plots com- 

 ing from the other points of the triangle. We have styled them, there- 

 fore, 'triangular' experiments. By this method of interchanging seed we 

 are enabled to determine the influence of environment and of the seed 

 on the crop. 



Wheat Development. 



"Two varieties of wheat were used in our experiments: (a) Kuban- 

 ka, a durum wheat and a spring variety, grown in South Dakota, Kan- 

 sas and California; (b) Crimean, a common wheat and a winter vari- 

 ety, grown in Texas, Kansas and California. 



The chemical work in these experiments was done by LeClerc and 

 Leavitt of the Bureau of Chemistry. The analytical data in this paper 

 are taken from their report to the office of Grain Investigations. 

 Kubanka Durum. 



"The original Kubanka seed used for the South Dakota, Kansas and 

 California triangle was grown in South Dakota in 1905, and sent to Kan- 

 sas and California for the 1906 seeding, a sample likewise being grown 

 in South Dakota in 1906. The crop thus obtained at each station formed 

 the real isitarting point of the triangular experimen't. The South Dakota 

 seed of 1906 was then sown in South Dakota in the spring of 1907 and 

 further, a sample was sent to Kansas and one to California for the 1907 

 seeding. Likewise, the 1906 Kansas crop was sent to South Dakota and 

 to California for 1907 seeding, and seed was also sown in Kansas in 1907 

 The same was true in California. 

 Crimean Wheat. 



"In exactly the same way a sample of Crimean was grown in Texas, 

 Kansas and California, the original seed being grown in Kansas in 1905. 

 Samples of each crop were collected and analyzed, the weight per bushel, 

 the character and flinty or starchy condition of the grain and the pro- 

 tein content being determined. It will not be necessary to dwell on 

 many of these results, the greatest variations are the per cent of pro- 

 tein, weight per bushel, and the per cent of starchy grains. The other 

 constituents varied appreciably, to be sure, but they will not be espec- 

 ially noted. The most important constituent of wheat being protein, the 

 variation of that constituent will be discussed first. 



