June i6, 1923 
Factors Affecting Nitrogen Content of Wheat 
951 
SUMMARY 
(1) Increasing the distance between the rows seemed to increase the 
nitrogen content of wheat grown in the nursery under nonirrigated con¬ 
ditions at Pullman. 
(2) Hybrid 143 showed a higher percentage of nitrogen when spring- 
sown than when fall-sown. 
(3) Increasing the distance betv/een the rows did not seem to affect 
the nitrogen content of wheat under irrigated conditions at Grandview. 
(4) The percentage of nitrogen in the kernel decreased as the grain 
matured. 
(5) The nitrogen in the plant moved toward the kernel as the grain 
approached maturity. 
(6) Irrigation did not affect the nitrogen content of wheat. 
(7) Placing the wheat plant in water moved nitrogen into the kernel. 
(8) Wheat kernels showed little increase in weight after the moisture 
declined to 40 per cent. 
(9) Phosphorus entered the grain simultaneously with nitrogen except 
in the early stages of development. 
LITERATURE CITED 
(1) Ames, J. W. 
1910. THE COMPOSITION OP WHEAT. INFLUENCE OF VARIOUS FACTORS ON THE 
PHOSPHORUS, potassium, AND NITROGEN CONTENT OF THE WHEAT 
PLANT. Ohio Agr. Exp. Sta. Bui. 221, 37 p., i col. fold, diagr. 
(2) Brenchley, W. E., and Hall, A. D. 
1909. THE DEVELOPMENT OP THE GRAIN OF WHEAT. In JOUT. Agr. Sci., V. 3, pt. 
2, p. I95-217, 20 fig., pi. 15. 
(3) Brewer, William H. 
1883. Report on the cereal production of the united states, /w U. 3 - 
Dept. Int. Census Off. Rpt. on the Productions of Agr. ... loth Census, 
June I, 1880, [Final Rpt., v. 3], p. 371-553 (1-173) inch 98 tables, 16 
col. maps. 
(4) Davidson, Jehiel, and Le Clerc, J. A. 
1917-18. THE EFFECT OF SODIUM NITRATE APPLIED AT DIFFERENT STAGES OP 
GROWTH ON THE YIELD, COMPOSITION AND QUALITY OF WHEAT. In 
Jour. Amer. Soc. Agron., v. 9, no. 4, p. 145-154, 1917; v. 10, no. 5, 
p. 193-198, 1918. 
(5) Deh^rain, P.-P., and Dupont, C. 
1902. SUR l’origine de l’amidon du grain de bl]^. In Ann. Agron., t. 28, 
no. 10, p. 522-527. 
(6) Jensen, J. L. 
1899. SAMMENHAENGEN MELLEM KLIMA OG KORNARTERNES KAERNESTj 2 iRRELSE. 
In Tidsskr. Landbr. Planteavl., Bd. 5, p. 138-147. Abstract in Exp. 
Sta. Rec., v. 12, no. 8, p. 737-738. 1901. 
(7) Lawes, j. B., and Gilbert, J. H. 
1858. ON SOME POINTS IN THE COMPOSITION OF WHEAT-GRAIN, ITS PRODUCTS 
IN the MILL, AND BREAD. In Jour. Chem. Soc. [London], v. 10, p. 1-55. 
Reprinted 1893. 
1884, ON THE COMPOSITION OF THE ASH OF WHEAT-GRAIN, AND WHEAT-STRAW, 
GROWN AT ROTHAMSTED, IN DIFFERENT SEASONS, AND BY DIFFERENT 
MANURES. In Jour. Chem. Soc. [London], v. 45, p. 305-407, 31 tables 
(in text and on pi.). 
(9) Le Clerc, J. A. 
1907. the effect of climatic CONDITIONS ON THE COMPOSITION OF DURUM 
WHEAT. In U. S. Dept. Agr. Yearbook, 1906, p. 199-212, pi. io~ii 
(col.). 
(10) - and Leavitt, Sherman. 
1910. tri-local experiments on the influence of environment on the 
COMPOSITION OF WHEAT. U. S. Dept. Agr. Bur. Chem. Bui. 128, 18 p. 
