. Proceedings of the American Society of Agronomy . Fig. 30.—Yield, in grams, of grain (wheat) under varying conditions of soilmoisture and fertilization. The high nitrogen fertilizer, when applied to the low moisture soilat the second stage of growth, has not produced as high a yield ofeither grain or straw as when applied at planting. However, whenthis same fertilizer was applied to the high moisture soil at the second 244 PROCEEDINGS OF THE AMERICAN SOCIETY OF AGRONOMY. stage, the yield of grain and straw was higher than when appHed atplanting. (See Figs. 30 and 31.). Fig. 31.—Yield, in gra
. Proceedings of the American Society of Agronomy . Fig. 30.—Yield, in grams, of grain (wheat) under varying conditions of soilmoisture and fertilization. The high nitrogen fertilizer, when applied to the low moisture soilat the second stage of growth, has not produced as high a yield ofeither grain or straw as when applied at planting. However, whenthis same fertilizer was applied to the high moisture soil at the second 244 PROCEEDINGS OF THE AMERICAN SOCIETY OF AGRONOMY. stage, the yield of grain and straw was higher than when appHed atplanting. (See Figs. 30 and 31.). Fig. 31.—Yield, in grams, of straw (wheat) produced under different condi-tions of soil moisture and fertilization. The crop growing in the soil with a low moisture content showed aslightly higher percentage of nitrogen in the grain where the completefertilizer was added at the time of planting than when added at a laterdate. Where the high nitrogen fertilizer was added to the low mois-ture soil there seemed to be a tendency for the percent nitrogen ingrain to increase with the later applications. The lowest percentageof nitrogen in grain was found where no fertilizer was added. MORGAN : AVAILABILITY OF PLANT NUTRIENTS. 245 Table XXXII.—Shozving the Influence of Soil Moisture and the VariousFertilizer Treatments Upon the Percent Nitrogen in Grain and Straw. 1 reatment. Percent Nitrogen. Percent W. Percent W. Grain. Straw. Grain. Straw. Comp. fert. ist stage Comp. fert. 2d stage Comp. fert. 3d stage No fert
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