. Proceedings of the American Society of Agronomy . ertilizer was added at the first stage the strawcontained percent nitrogen as compared with percent asan average for the entire high moisture series which is strange. In low soil moisture the grain showed an average of percentnitrogen, while the high moisture series averaged only same differences are noticeable in the straw. The results ofanalyses made of crops harvested at the different stages of growthhave not yet been obtained. (See Figs. 32 and 33.) Table XXXIII.—Showing Effect of Fertilizer Treatment and
. Proceedings of the American Society of Agronomy . ertilizer was added at the first stage the strawcontained percent nitrogen as compared with percent asan average for the entire high moisture series which is strange. In low soil moisture the grain showed an average of percentnitrogen, while the high moisture series averaged only same differences are noticeable in the straw. The results ofanalyses made of crops harvested at the different stages of growthhave not yet been obtained. (See Figs. 32 and 33.) Table XXXIII.—Showing Effect of Fertilizer Treatment and SoilMoisture Upon Root Development. Treatment. Weight in Grams, of Air Dry Roots. Percent W. Percent W. 14-5 23-7 246 PROCEEDINGS OF THE AMERICAN SOCIETY OF AGRONOMY. When the plants were harvested the soil in each pot was placed upona sieve of rather fine mesh and carefully washed from around the rootsby means of a gentle stream of water. This was done so that none. Fig. 32.—Percent nitrogen in grain (wheat) when grown under varying condi-tiohs of soil moisture and fertilization. of the roots was lost. The roots were then thoroughly air dried andweighed. Table XXXIII shows that the moisture content of the soil influencedthe root development more than did the fertilizers or the time of theirapplications. However, the high nitrogen fertilizer when applied to
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