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North Dakota State University
Nitrogen Evaluation Trial-Sugar Beet
Effect of NZONE MAX® on Sugarbeet Yield and Soil Nitrogen Availability during
2014 Growing Season
Amitava Chaterjee, Norm Cattanach, Soil Science, North Dakota State University,
Fargo, ND
AgXplore fertilizer nitrogen management product, ‘NZONE MAX’, has demand to save
nitrogen loss and increase nitrogen use efficiency. This is the third year of the trial.
This year, field experiment was again established on a Colvin silty clay loam
location near Ada, MN in 2014. Planting was arranged in a randomized complete
block design with four replications. Individual treatment plots measured 11 feet wide
and 30 feet long. Even though conditions were cool and wet this spring and early
summer. Germination, plant stands and plant growth was good.
Sugarbeet variety Crystal 985 Roundup Ready (rhizomainia disease resistant),
was planted on May 20/2014 with a John Deere MaxEmerge II planter. Sugarbeet was
placed 1.25 inches deep with 5-inch in-row spacing. A 22-inch row spacing was used.
Roundup herbicide was applied twice for weed control, plots were not cultivated.
Quadris was applied at the four to six leaf stage and again three weeks later to help
control rhizoctonia root rot. Two fungicide applications, Supertin/Topsin and Headline
were applied for Cercospora leafspot control.
Soil nitrogen levels were adjusted with fertilizer to approximately 130 lbs/acre of
available residual soil test plus added fertilizer N. Initial soil test value of the
experimental site is presented below in table 1. All plots were supplemented with
potassium fertilizer according ND sugarbeet recommendation. Treatments and rates
included in the experiment were (1) Untreated Check (2) 100% recommended N (3)
NZONE MAX + 75% recommended N (4) NZONE MAX + 100% recommended N (90
lb N/a) (5) NZONE MAX + 130% recommended N (6) 75% recommended N + 25% N
with NZONE MAX @ V3. The trials were planted into wheat residue and a moist, firm
soil seedbed. In-spite of excessive amounts of rainfall in June and early July, minimal
amounts of moisture received in mid-July, August and September, good sugarbeet
yield and quality were still obtained. Four of the six rows of in-furrow treatment plots
were treated and then two of the middle four rows of each plot were harvested on
September 24/2014. Yield determinations were made and quality analysis performed
at American Crystal Sugar Quality Tare Lab, East Grand Forks, MN.
Table 1. Residual soil nitrogen, phosphorus, and potassium. Soil samples were collected
1st May, 2015
Soil Depth
(inches)
0-6
6-24
24-48
NO3-N
(lb/ac)
6
18
20
Olsen-P
(ppm)
10
K
(ppm)
50
Table 2. Monthly weather data during 2014 growing season are reported from NDSU
NDAWN station for field location, Ada, MN
Month
Max
Air
Temp
(°F)
Year
Ada
Min
Air
Temp
(°F)
Avg
Avg
Bare
Air
Soil
Temp
Temp
(°F)
(°F)
Avg
Turf
Soil
Temp
(°F)
Avg
Wind
Spd
(mph)
Max
Wind
Spd
(mph)
Avg
Solar
Rad
(Lys)
Avg
PET
Penma
n
(inch)
Total
PET
Penma
n
(inch)
Total
Rain
fall
(inch)
Avg
Dew
Point
(°F)
Avg
Wind
Chill
(°F)
2014
5
66
43
55
55
52
10.0
25.2
411
0.21
6.41
2.15
43
53
2014
6
75
56
65
67
66
9.2
24.7
426
0.20
5.91
7.12
57
65
2014
7
78
54
66
75
71
7.6
21.6
531
0.23
7.03
1.77
58
67
2014
8
78
56
67
74
69
5.8
16.7
391
0.16
4.90
1.74
61
67
2014
9
71E
47E
59
62
59
8.7E
22.6E
330E
0.15
4.63
1.67E
50E
57E
2014
10
57
35
46
48
47
9.8
24.2
219
0.12
3.66
0.51
71E
48E
60
64
61
8.5E
22.5E
385E
0.18
Averages:
Totals:
35
42
51E
59E
32.54 14.95E
Max:
78E
56E
67
75
71
10.0E 25.2E
531E
0.23
7.03
7.12E
61E
67E
Min:
57E
35E
46
48
47
5.8E
16.7E
219E
0.12
3.66
0.51E
35E
42E
Std. Dev.:
8E
8E
8
11
10
1.6E
3.1E
104E
0.04
1.25
10E
10E
Table 3. Sugarbeet yield and quality in response to NZONE MAX application during
2014 growing season.
Treatments
1. Control
2. 100% N
3. NZONE MAX + 75% N
4. NZONE MAX + 100% N
5. NZONE MAX+130% N
6.75%N + 25% N with
NZONE MAX at V3
LSD (p=0.05)
Significance
Sugar %
Slm%
Tons/ac
RSA
16.89 ± 0.29 c
17.06 ± 0.25 abc
16.98 ± 0.14 bc
17.21 ± 0.16 ab
16.88 ± 0.15 c
0.88
0.94
0.93
0.91
0.93
19.69 ± 0.41 b
24.19 ± 2.40 a
22.82 ± 2.52 ab
24.22 ± 2.76 a
26.16 ± 1.73 a
6301 ± 222 b
7802 ± 806 a
7328 ± 858 ab
7893 ± 875 a
8345 ± 574 a
17.31 ± .33 a
0.91
26.07 ± 4.24 a
8540 ± 1317 a
0.32
Sign
0.09
NS
3.88
Sign
1253
Sign
RST
320 ± 6 bc
322 ± 3 abc
321 ± 2 bc
326 ± 4 ab
319 ± 2 c
328 ± 6 a
6.41
Sign
NZONE MAX with 130%N (Trt 5) had the highest yield but increasing nitrogen rate
significantly reduced yield. Treatment 6 (75%N + 25% N with NZONE MAX at V3) had
higher yield and sugar content than 100%N indicating split application with NZONE
MAX had better management option than pre-plant N application but differences are
not significant besides control treatment.
Table 4. Soil inorganic nitrogen (NH4+NO3) concentration in response to different
treatments (N= 4). Soil samples were collected on 1st and 30th July, 2014.
Treatments
1. Control
2. 100% N
3. NZONE MAX + 75% N
4. NZONE MAX + 100% N
5. NZONE MAX+130% N
6.75%N + 25% N with NZONE MAX at V3
LSD (p=0.05)
Significance
July1_0-12”
6.36±1.98C
13.1±2.01A
7.60±1.78BC
9.32±3.63B
13.86±7.64A
12.98±2.59A
July 1_12-24”
3.24±1.10
4.67±3.52
4.02±1.59
3.31±0.58
2.96±0.90
3.92±1.32
July30_0-12”
4.50±0.42
7.19±1.52
4.89±1.03
6.15±3.92
7.75±4.48
6.37±3.50
July 30_12-24”
1.49±.24BC
2.42±1.18A
1.93±.75AB
1.23±.50C
2.37±.75AB
1.87±1.07ABC
2.75
Significant
NS
NS
0.69
Significant
We did not find significant difference in inorganic soil N content within 0-12” depth but
within 12-24’ depth, treatment 4, NZONE MAX+100%N, had significantly lower N content
than treatment 5, 3, and 2; this may be due to higher N uptake or loss or just spatial
difference.
*Results conducted and submitted by:
Dr. Amit Chatterjee, North Dakota State University