June i6, 1923 
Factors Affecting Nitrogen Content of Wheat 
947 
second week the results for nitrogen were in favor of wheat grown on 
plot II with plot I wheat showing nearly as much nitrogen. At the 
third, fourth, and maturity periods the highest nitrogen content was 
found in plot I wheat. Wheat from plots II, III, and IV did not change 
appreciably after the drop in nitrogen from the first to the second week. 
With the exception of the wheat grown on nonirrigated land, it should 
be noted that the varying amounts of water applied had not appreciably 
affected the nitrogen content of the mature grain. 
A subsequent trial was made with two varieties of wheat for the pur¬ 
pose of studying the influence of varying amounts of water when dis¬ 
tributed over a longer period of growth than in the previous experiment. 
The average weights of kernels in the Sonora and Hybrid 143 wheats are 
recorded in Table VIII. 
Table VIII.— Weight of kernels as influenced by applying varying amounts of water 
over a wide period and then cultivating after water application 
Variety. 
Distance. 
Plot I, 
rainfall 
only. 
Plot II, 
12 inches 
of water. 
Plot III, 
16 inches 
of water. 
Plot IV, 
20 inches 
of water. 
Inches. 
Gm. 
Gm. 
Gm. 
Gm. 
6 
0. 0506 
0. 0503 
0. 0503 
0. 0506 
9 
.0499 
.0516 
.0507 
.0520 
Sonora... 
< 12 
.0507 
•0515 
.0507 
• 0517 
15 
•0505 
.0514 
.0520 
•0505 
18 
•0515 
.0524 
*0523 
•0503 
f ^ 
•0332 
•0331 
•0344 
• 033S 
9 
.0329 
.0326 
•°33S 
.0327 
Hybrid 143. 
12 
•0332 
•0334 
•0336 
•0344 
15 
.0327 
.0330 
•0349 
,0346 
18 
•0343 
.0346 
•0350 
•0350 
Apparently, the variation in amount of water used or the distance of 
the rows has not had any effect on the Sonora wheat, since the weights of 
the kernels are fairly uniform, regardless of conditions of the experiments. 
Hybrid No. 142 wheat increased slightly in weight in the 15 and 18 inch 
rows, where 20 inches of water were applied. 
EFEKCT OE WATER ON TRANSLOCATION OF NITROGEN 
For the purpose of learning whether or not the placing of the wheat 
plant in water would affect the nitrogen content of the wheat, uniform 
wheat plants were selected and brought to the laboratory. One-half of 
the wheat heads and the grain were removed from three-fourths of the 
samples, and each plant and the grain removed were given corresponding 
numbers. The heads in the other one-fourth of the samples were not 
touched. The plants were divided into two lots, one-half of which were 
placed upright in beakers of water and the other one-half were left 
standing near but were not placed in water. Following the termination 
of the experiment, determinations of the weight and the nitrogen content 
of the grain in both samples were made. The results are recorded in 
Table IX. 
