Malt Barley Following sugarbeet
J. Eckhoff1
This study evaluated performance of malt barley that followed sugarbeets under sprinkler and flood irrigation. The sugarbeets had six different applied N rates. Previous crops were sugarbeet in 2004, malt barley in 2003, and potatoes in 2002. Residual soil N to 4 feet for the 2004 sugarbeet crop was 28 lb/ac. Five rates of liquid 28-0-0 were applied on Sep 17, 2003. A check treatment with no applied N was included. Sugarbeets were planted to stand with the variety AC927 on Apr 22, 2004 and harvested Oct 1. No fertilizer was applied following sugarbeet harvest. Legacy barley was planted with a commercial planter on Apr 26, 2005. Barley plots in 2005 were the same as the sugarbeet plots in 2004. Sprinkle irrigated plots were irrigated on May 6 and Jun 20. Flood irrigated plots were irrigated on Jun 21. Barley was harvested on Aug 18.
Performance of sprinkler and flood irrigated malt barley that followed sugarbeets which had six rates of N
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Sprinkler 2005 |
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N available to sugarbeet crop* |
Height, cm |
Test wt, lb/bu |
% plump |
% regular |
% thin |
grain protein |
Yield, bu/ac |
|
|
28 |
84.2 |
45.6 |
93.3 |
6.5 |
0.2 |
10.55 |
85.1 |
a |
|
100 |
85.3 |
45.8 |
94.5 |
5.0 |
0.5 |
11.38 |
99.1 |
b |
|
125 |
84.8 |
46.3 |
93.8 |
5.5 |
0.7 |
11.65 |
103.0 |
b |
|
150 |
87.8 |
46.0 |
93.5 |
5.8 |
0.7 |
11.09 |
103.0 |
b |
|
175 |
88.0 |
46.2 |
95.0 |
4.7 |
0.3 |
11.41 |
102.7 |
b |
|
200 |
83.3 |
46.4 |
94.5 |
5.0 |
0.5 |
11.47 |
96.4 |
ab |
|
LSD 5% |
NS |
0.7 |
NS |
NS |
NS |
NS |
14.4 |
|
|
flood 2005 |
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N available to sugarbeet crop* |
Height, cm |
Test wt, lb/bu |
% plump |
% regular |
% thin |
grain protein |
Yield, bu/ac |
|
|
28 |
80.2 |
46.4 |
93.5 |
6.0 |
0.5 |
10.12 |
80.9 |
|
|
100 |
79.3 |
46.1 |
93.5 |
6.2 |
0.3 |
9.95 |
86.8 |
|
|
125 |
79.2 |
45.8 |
93.0 |
6.7 |
0.3 |
9.86 |
77.9 |
|
|
150 |
77.8 |
46.3 |
93.5 |
6.3 |
0.2 |
9.77 |
77.4 |
|
|
175 |
78.5 |
46.1 |
92.8 |
7.0 |
0.2 |
9.96 |
83.0 |
|
|
200 |
83.2 |
46.4 |
93.3 |
6.3 |
0.3 |
10.48 |
89.3 |
|
|
LSD 5% |
NS |
NS |
NS |
NS |
NS |
NS |
NS |
|
|
sprinkler 2004-05 |
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N available to sugarbeet crop* |
Height, cm |
Test wt, lb/bu |
% plump |
% regular |
% thin |
grain protein |
Yield, bu/ac |
|
|
** |
93.3 |
46.3 |
95.5 |
4.4 |
0.1 |
10.59 |
82.6 |
a |
|
100 |
91.7 |
46.6 |
95.8 |
3.9 |
0.3 |
11.58 |
86.4 |
a |
|
125 |
92.8 |
46.9 |
95.7 |
4.0 |
0.3 |
11.38 |
90.9 |
ab |
|
150 |
95.3 |
47.0 |
95.4 |
4.3 |
0.3 |
11.24 |
90.6 |
ab |
|
175 |
96.1 |
47.0 |
96.2 |
3.7 |
0.2 |
11.36 |
94.0 |
b |
|
200 |
94.8 |
47.1 |
96.0 |
3.7 |
0.3 |
11.40 |
91.8 |
b |
|
LSD 5% |
NS |
0.5 |
NS |
NS |
NS |
0.75 |
8.3 |
|
|
flood 2004-05 |
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N available to sugarbeet crop* |
Height, cm |
Test wt, lb/bu |
% plump |
% regular |
% thin |
grain protein |
Yield, bu/ac |
|
|
** |
93.8 |
46.8 |
94.8 |
5.0 |
0.3 |
10.58 |
72.3 |
a |
|
100 |
95.7 |
46.7 |
94.6 |
5.2 |
0.3 |
10.07 |
79.8 |
b |
|
125 |
97.2 |
46.7 |
94.2 |
5.6 |
0.3 |
10.42 |
78.7 |
ab |
|
150 |
95.0 |
46.8 |
94.9 |
5.0 |
0.1 |
10.19 |
76.7 |
ab |
|
175 |
96.6 |
46.8 |
94.1 |
5.8 |
0.2 |
10.47 |
80.1 |
b |
|
200 |
97.8 |
46.9 |
94.8 |
5.0 |
0.2 |
10.43 |
82.8 |
b |
|
LSD 5% |
NS |
NS |
NS |
NS |
NS |
NS |
7.3 |
|
* residual soil N to 4 feet + applied N for sugarbeet crop produced in year prior to malt barley
**28 lb/a in 2004, 45 lb/a in 2003
1Montana State University Eastern Agricultural Research Center, Sidney, MT