- Situation 3: Irrigation was used when soil moisture dropped to 1%. a. If irrigation begins when soil moisture reaches 49%, what application of nitrogen will result in the lowest percentage of protein in wheat grain? b. If irrigation begins when soil moisture reaches 34%, what application of nitrogen will result in the same protein content of wheat grain as begin- ning irrigation when soil moisture reaches 1%? c. If you irrigate when soil moisture reaches 34%, how much nitrogen should you apply to achieve a 13% protein content in wheat grain? d. Does Figure 1.45 indicate that, for nitrogen levels at 45 pounds per acre or higher, increased protein content in wheat grain is associated with higher or lower soil moisture? 14 1% 13 34% 12 49% * 11+ 10+ 6. 20 40 60 80 100 120 140 Nitrogen FIGURE 1.45 Protein content versus availability of nitrogen % Protein

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- Situation 3: Irrigation was used when soil
moisture dropped to 1%.
a. If irrigation begins when soil moisture reaches
49%, what application of nitrogen will result in
the lowest percentage of protein in wheat grain?
b. If irrigation begins when soil moisture reaches
34%, what application of nitrogen will result in
the same protein content of wheat grain as begin-
ning irrigation when soil moisture reaches 1%?
c. If you irrigate when soil moisture reaches 34%,
how much nitrogen should you apply to achieve a
13% protein content in wheat grain?
d. Does Figure 1.45 indicate that, for nitrogen
levels at 45 pounds per acre or higher, increased
protein content in wheat grain is associated with
higher or lower soil moisture?
14
1%
13+
34%
12
49%
11+
10-
6,
40
60
80
100 120 140
Nitrogen
FIGURE 1.45 Protein content versus
availability of nitrogen
% Protein
20
Transcribed Image Text:- Situation 3: Irrigation was used when soil moisture dropped to 1%. a. If irrigation begins when soil moisture reaches 49%, what application of nitrogen will result in the lowest percentage of protein in wheat grain? b. If irrigation begins when soil moisture reaches 34%, what application of nitrogen will result in the same protein content of wheat grain as begin- ning irrigation when soil moisture reaches 1%? c. If you irrigate when soil moisture reaches 34%, how much nitrogen should you apply to achieve a 13% protein content in wheat grain? d. Does Figure 1.45 indicate that, for nitrogen levels at 45 pounds per acre or higher, increased protein content in wheat grain is associated with higher or lower soil moisture? 14 1% 13+ 34% 12 49% 11+ 10- 6, 40 60 80 100 120 140 Nitrogen FIGURE 1.45 Protein content versus availability of nitrogen % Protein 20
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