trend for precision soil testing % zone or grid samples tested compared to total samples
DESCRIPTION
Trend for Precision Soil Testing % Zone or Grid Samples Tested compared to Total Samples. AGVISE Laboratories % Zone or Grid Samples Tested Compared to Conventional Whole Field Composite Samples in 2012. AGVISE Laboratories %Zone or Grid Samples – Northwood laboratory 1997 - 2012. - PowerPoint PPT PresentationTRANSCRIPT
Trend for Precision Soil Testing% Zone or Grid Samples Tested compared to
Total Samples
0%10%20%30%40%50%60%70%80%90%
100%
2008 2009 2010 2011 2012
% Z
on
e o
r G
rid
Sam
ple
s
Overall
MN
SD
ND
MT
MB
AGVISE Laboratories%Zone or Grid Samples Tested Compared to
Conventional Whole Field Composite Samples in 2012
77%
33%
57%
25%
45%
60%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
MN ND SD MT MB Overall
AGVISE Laboratories%Zone or Grid Samples – Northwood laboratory
1997 - 2012
22%18%
14% 15%11%
8%11%
15%11%
15% 16%
26%28%
31%33%
39%
0%
10%
20%
30%
40%
50%
60%
70%
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
% Grid or Zone Samples Tested Compared To Conventional Whole Field Composite Samples Tested
43
4447
5050
51
33 47
48
44
43
50
41 4264
Average Soil Nitrate following Wheat in 2012
Fall 2012 Samples
(lb/a 0-24” samples)
MB
ND
SDMN42
39
3865
44 48
43
6757
16%
39%
23%
11%
5%
6%
0% 10% 20% 30% 40% 50% 60%
0-20
21-40
41-60
61-80
81-100
>100
Nit
rate
Cat
ego
ry
To
tal
Nit
rate
0-2
4" l
b/a
% of Fields Testing in Each Category
Soil Nitrate Variability Between Fields Following “WHEAT” in 2012
Average Soil Nitrate Following “WHEAT” 1986-2012
26 Years of history!
0
20
40
60
80
100
120
86 88 90 92 94 96 98 00 02 04 06 08 10 11 2012
64 59
107
96
81
68
4238
504648
6056
445453
61
Nitr
ate-
N (
0-24
”)
4335
46
60
3541
293240
45
Average Soil Nitrate Following Wheat For Region (1986-2012)
Deep “N” (24-48” lb/a)
0
10
20
30
40
50
60
70
86 88 90 92 94 96 98 00 02 04 06 08 10 12
51
43 41
4953
6359
4446
35
29
36343229 3129
Ni tr
ate-
N (
24-4
8” lb
/a)
1818
27201819
131415 14
24%
46%
17%
6%
3%
4%
0% 10% 20% 30% 40% 50% 60%
0-20
21-40
41-60
61-80
81-100
>100
Nit
rate
Cat
ego
ry
To
tal
Nit
rate
0-2
4" l
b/a
% of Fields Testing in Each Category
Soil Nitrate Variability Between Fields Following “Barley” in 2012
Average Soil Nitrate Following “BARLEY 1986-2012
0
10
20
30
40
50
60
70
80
90
100
86 88 90 92 94 96 98 00 02 04 06 08 10 12
5253
95
84
70
56
3529
39 373947
53
404548 50
Nitr
ate-
N (
0 -24
” lb
/ a)
41
30
43 45
35 352927
3438
31%
36%
18%
7%
4%
5%
0% 20% 40% 60%
0-20
21-40
41-60
61-80
81-100
>100
Nit
rate
Cat
ego
ry
To
tal
Nit
rate
0-2
4" l
b/a
% of Fields Testing in Each Category
Soil Nitrate Variability Between Fields Following “Sunflower” in 2012
Average Soil Nitrate Following “SUNFLOWER” 1986- 2012
0
20
40
60
80
100
120
86 88 90 92 94 96 98 00 02 04 06 08 10 12
46 50
82
101
70
55
43404347 44474944
5048 50
Nitr
ate-
N (
0 -24
” lb
/ a)
48
3234
50
303325 22
27
39
19%
46%
21%
8%
4%
3%
0% 20% 40% 60%
0-20
21-40
41-60
61-80
81-100
>100
% of Fields Testing in Each Category
Nit
rate
Ca
teg
ory
T
ota
l Nit
rate
0-2
4"
lb/a
Soil Nitrate Variability Between Fields Following “Dry Beans” 2012
Average Soil Nitrate Following “DRY BEANS” 1986-2012
0
20
40
60
80
100
120
86 88 90 92 94 96 98 00 02 04 06 08 10 12
5358
78
102100
6561
51
65
525761
72
49
70
5355
Nitr
ate-
N (
0 -24
” lb
/ a)
58
4646
66
444134353839
69%
23%
5%
2%
0%
0%
0% 20% 40% 60% 80%
0-20
21-40
41-60
61-80
81-100
>100
Nit
rate
Cat
ego
ry
To
tal
Nit
rate
0-2
4" l
b/a
% of Fields Testing in Each Category
Soil Nitrate Variability Between Fields Following “Sugarbeet” in 2012
Average Soil Nitrate Following “SUGARBEET” 1986- 2012
0
10
20
30
40
50
60
86 88 90 92 94 96 98 00 02 04 06 08 10 12
2521
484753
30
22
161918
2520
2520
232522
Nitr
ate-
N (
0-24
” lb
/a)
2116
2121 2217
1315 1720
8%
43%
30%
11%
4%
4%
0% 10% 20% 30% 40%
0-20
21-40
41-60
61-80
81-100
>100
Nit
rate
Cat
ego
ry
To
tal
Nit
rate
0-2
4" l
b/a
% of Fields Testing in Each Category
Soil Nitrate Variability Between Fields Following “Fallow” in 2012
Average Soil Nitrate Following “FALLOW” 1986-2012
0
20
40
60
80
100
120
140
160
86 88 90 92 94 96 98 00 02 04 06 08 10 12
102
119
143149
128
98
80
485860
67697984 81
9385
Nitr
ate-
N (
0 -24
” lb
/ a)
7975666259
5060
4655
46
64%
27%
5%
2%
1%
1%
0% 20% 40% 60%
0-20
21-40
41-60
61-80
81-100
>100
Nit
rate
Cat
ego
ry
To
tal
Nit
rate
0-2
4" l
b/a
% of Fields Testing in Each Category
Soil Nitrate Variability Between Fields Following “Soybeans” in 2012
Average Soil Nitrate Following “Soybeans” 1995- 2012
0
10
20
30
40
50
60
95 97 99 01 03 05 07 09 11 2012
29 30 3330 28
31 30
Nitr
ate-
N (
0-24
” lb
/a)
3235
2927
35
2621 24 23
2723
52
4654
6857
54
67
44
7764
63 113
Average Soil Nitrate following Corn in 2012
Fall 2012 samples
(lb/a 0-24” samples)MB
ND
SDMN56
83
63
62
89
50
85114
17%
30%
22%
14%
8%
11%
0% 10% 20% 30% 40%
0-20
21-40
41-60
61-80
81-100
>100
Nit
rate
Cat
ego
ry
To
tal
Nit
rate
0-2
4" l
b/a
% of Fields Testing in Each Category
Soil Nitrate Variability Between Fields Following “Corn” in 2012
56%
55%66%
47%68%57%
78% 77%
69%
72%
34% 14%
20% 58%50%
27%60%
% Soil Samples with Phosphorus less than 10 ppm
Fall 2012 samples
(0-6” samples)MB
ND
SDMN
38%
(Olsen P test)35%
67%
32%
36%
36%
50%46%60%
57%47%71%
36%
21%
14%3%
3%
6%7%
2% 2%
48%
36%
17% 30%
32%38%
11%6%
% Soil Samples with Potassium less than 150 ppm
Fall 2012 samples(0-6” samples)
MB
ND
SDMN
32%11%
48%
21%
5%
35%41%
31%23%4%1%
1%
78%
77%
19%
65%
56%72%
54%77%86%
83%
65%
78%
35% 24%
35%
32%
59%
53%
49%66%
% Soil Samples with Zinc less than 1.0 ppm
Fall 2012 samples(0-6” samples)
MB
ND
SDMN
34%
35%
26%
59%20%
36%
50%
49%74%
91%
22%
44%
65%
8%14%
18%49%40%
54% 22%
21%
9%
9% 12%
10%
5% 9%
7%
11%
15%12%
% Soil Samples with Sulfur less than 15 lb/a
Fall 2012 samples(0-6” samples)
MB
ND
SDMN
10%
46%
49%
69%27%
38%
32%
44%
29%
19%
20%
59%
67%
26%
22%33%
25%38%
60%
71% 43%
28%
21%
25% 17%
33%
8%
20%
29%29%
% Soil Samples with %OM less than 3.0%
Fall 2012 Samples(0-6” samples)
MB
ND
SDMN
9%
3%
9%
75%
26%
17%9%28%
28%
26%
55% 12%26%
13%
48%
38%56%
59%87%85%
89% 65%
84%
41%
20%
77%
70%
57%
44%
30% 47%
13% 78%55%
42%59%
% Soil Samples with Chloride less than 40 lb/a
Fall 2012 Samples(0-24” samples)
MB
ND
SDMN
51%
78%
85%
34%
57%
63%
12%17%
7%13%10%
2% 2%
1%
4%
20%
29%
26%
5%
0%2%
5%
16% 14%
26%24%
10%12%
% Soil Samples with Copper less than 0.5 ppm
Fall 2012 samples(0-6” samples)
MB
ND
SDMN
15% 7%
10%
5%
14%
45%
41%
4%
3%
7%5%
2%15%
15%
2%
39%
5%
1% 13%
4%1%
8%2%
% Soil Samples with Boron less than 0.4 ppm
Fall 2012 samples(0-6” samples)
MB
ND
SDMN
1%
9%47%
75%
17%
9%8%
8%12%9% 35% 27%
4%
0%
0%
65%
76%70%
38%35%39%
62% 51%
25%
54%
79%
96%
43%
36%
22%
23%
75% 72%
74%82%
42%71%
% Soil Samples with Soil pH greater than 7.3
Fall 2012 samples(0-6” samples)
MB
ND
SDMN
65%
27%34%
23%
15%
6%
67%
92%
84%
12%
26%10%
6%6%
7%
10%
29%
23%
44%
4%
9%2%
17% 40%
22%22%
14%10%
% Soil Samples with Carbonate greater than 5.0%
Fall 2012 samples(0-6” samples)
MB
ND
SDMN
36%
1%10%
24%
55%
13%
3%
1%
3%
9%
6%
27%
37%15%
10%1%4%
2% 8%
1%
4%
19%
19%
3%
11%
2%
21%
17% 12%
23%17%
8%10%
% Soil Samples with Salts greater than 1.0
Fall 2012 Samples(0-6” samples)
MB
ND
SDMN
11%
12%7%
6%
2%
0%
6%
17%
21%
North Dakota & NW Minnesota% Samples Testing with
Salts greater than 1.0
0%
5%
10%
15%
20%
25%
30%
35%
40%
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
1:1 salt method – expressed as mmhos/cm
582 Grand Forks
567 TRF
587 Minot
South Dakota - % Samples Testing with Salts greater than 1.0
0%
5%
10%
15%
20%
25%
30%
35%
40%
572 573 574 582 Grand Forks
1:1 salt method – expressed as mmhos/cm
572 – Watertown573 – Huron574 – Aberdeen583 – Grand Forks
The Salt Problem may be Worse than this?
• Composite samples – Avoid areas that don’t represent most of the
field• Saline areas• Sandy ridges
• Many salty fields don’t get tested
• Zone sampling– The salty zones often do not get tested or
fertilized