R. Jay Goos and Brian Johnson, Department of Soil Science, NDSU, Fargo, ND 58105
e-mail: rj.goos@ndsu.nodak.edu
Field studies were set out at five locations in 2003, to compare the chlorosis resistance of about 170 soybean entries to iron chlorosis. The sites were located near Amenia, Arthur, Ayr, and Galesburg, ND. Two sites were lost to hail, but one was replanted. The sites ranged in pH from 7.8 to 8.0, salinity (EC) from 0.6 to 1.8 mmho/cm, and % CaCO3 ranging from 7 to 12 %. Thirty seeds were planted in short (5Õ) rows on 30-inch centers. The experimental design was a randomized complete block with four replications.
Three ratings were made, at the 2-3 trifoliolate stage, the 5-6 trifoliolate stage, and two weeks after the 5-6 trifoliolate stage. The scale was a 1-5 scale, with 1=representing no chlorosis and 5= the most severe chlorosis. The third rating was not taken at the replanted site, because of the need to finish the study in time to prepare this report for the NDSC Field Days, and the third rating was not taken at another site, as recovery from chlorosis was uneven across the plot.
Nine ÒstandardÓ varieties are entered, to help in the interpretation of the results. The varieties, listed in expected order from the most resistant to most susceptible, were Iowa State ISU A11> Seeds 2000 2070RR > Traill > Council = Asgrow 0801 > Peterson PFS 0202RR = Glacier > Mycogen 5072 = Stine 0480 = NuTech 0505RR. The variety ISU A11 represents the highest level of chlorosis resistance available in current breeding lines. An early selection of A11 (ÒA11-earlyÓ) was also tested. All standards were entered twice, to show the degree of variation in our ratings. Some entries were breeding lines, and the data are not reported here.
The summary of the chlorosis scores, averaged across site and the three ratings, are shown in Table 1. Each chlorosis rating in Table 1 represents the average of 36 observations. It was a challenging year, with excessive moisture early, and no rainfall later. Our standards separated themselves as expected with a few exceptions. Council performed a little better than expected, PFS 0202RR performed a little better than expected, and Stine 0480 performed a little better than expected, but generally, the standards separated themselves as expected.
If a field produces moderate or temporary chlorosis, we generally recommend that varieties have a chlorosis resistance as good or better than Council or Asgrow 0801 for these soils. On fields with severe chlorosis problems, only varieties with the highest levels of resistance should be planted. Any yield advantage of a less-resistant variety is lost if the crop turns yellow, even if there is recovery later in the growing season.
This report can also be found on our web site:
www.soilsci.ndsu.nodak.edu/yellowsoybeans/
This research was sponsored by the North Dakota Soybean Council.
Table 1. Average chlorosis scores at four sites in North Dakota, 2003. 1=no chlorosis, 5=most severe chlorosis.
|
Company |
Variety name |
Average |
|
"Standard" |
ISU A11 |
1.4 |
|
"Standard" |
ISU A11 |
1.6 |
|
Gold Co Seed |
6009 RR |
1.8 |
|
Brushvale |
BS 0315 |
1.8 |
|
"Standard" |
S2000 2070 RR |
1.8 |
|
"Standard" |
S2000 2070 RR |
1.8 |
|
"Standard" |
A11-Early |
1.8 |
|
"Standard" |
A11-Early |
1.8 |
|
DeKalb |
DKB 009-51 |
2.0 |
|
Garst |
0601 RR |
2.0 |
|
Brushvale |
BS 2108 |
2.0 |
|
UAP Dyna-Gro |
DG 38D05 |
2.0 |
|
Wensman |
W 2054 RR |
2.0 |
|
Pioneer |
90 M90 (RR) |
2.1 |
|
Stine |
S 0536-4 |
2.1 |
|
NuTech |
NT 0555+ RR |
2.1 |
|
Hyland |
HX 329 |
2.1 |
|
Pioneer |
PHI 03-16 (RR) |
2.1 |
|
AgSource |
90093 RR |
2.1 |
|
Kaystar |
K-0520 RR |
2.2 |
|
Bio Gene |
BG 050 RR |
2.2 |
|
Prairie Brand |
PB-0643 RR |
2.2 |
|
AgSource |
9051 RR |
2.2 |
|
NuTech |
NT 0403A RR |
2.2 |
|
Prairie Brand |
PB-0232 RR |
2.2 |
|
"Standard" |
Council |
2.2 |
|
"Standard" |
Traill |
2.2 |
|
Northstar |
NS 0217 RR |
2.2 |
|
"Standard" |
Council |
2.2 |
|
Peterson Farm Seeds |
PFS 0406 RR |
2.2 |
|
Pioneer |
90B51 RR |
2.2 |
|
Proseed |
RR 30-51 |
2.2 |
|
Stine |
S 0136-4 |
2.2 |
|
U of MN |
MN 0201 |
2.2 |
|
Northstar |
NS 0056 RR |
2.2 |
|
U of MN |
M97-304097 |
2.2 |
|
Wensman |
W 2051 RR |
2.2 |
|
Peterson Farm Seeds |
PFS 04007 RR |
2.3 |
|
Mycogen |
X53052 RR |
2.3 |
|
NuTech |
NT 0121 RR |
2.3 |
|
Peterson Farm Seeds |
PFS 0407 RR |
2.3 |
|
Company |
Variety name |
Average |
|
Quality Seed Genetics |
0888 RR |
2.3 |
|
AgSource |
9023 RR |
2.3 |
|
Garst |
0095 RR |
2.3 |
|
Top Farm |
6072 RR SB |
2.3 |
|
U of MN |
M97-304112 |
2.3 |
|
Gold Country Seed |
2502 RR |
2.3 |
|
Mustang |
M-054 RR |
2.3 |
|
Wensman |
W 20091 RR |
2.3 |
|
Quality Seed Genetics |
0081 RR |
2.3 |
|
Asgrow |
AG 0301 |
2.4 |
|
Legend Seeds |
LS 0911 RR |
2.4 |
|
Thunder |
605 RR |
2.4 |
|
U of MN |
MN 0304 |
2.4 |
|
Gold Country Seed |
3403 RR |
2.4 |
|
Hyland |
HX 327 |
2.4 |
|
"Standard" |
Traill |
2.4 |
|
Hyland |
HX 268 |
2.4 |
|
UAP Dyna-Gro |
DG 30D09 |
2.4 |
|
"Standard" |
Asgrow 0801 RR |
2.4 |
|
Bio Gene |
BG 0203 RR |
2.4 |
|
Kaystar |
K-0710 RR |
2.4 |
|
Mycogen |
Atlas Brand 5B008 RR |
2.4 |
|
Peterson Farm Seeds |
PFS 04009 RR |
2.4 |
|
U of MN |
M97-304052 |
2.4 |
|
Bio Gene |
BG 091 RR |
2.5 |
|
Dairyland |
DSR-007/RR |
2.5 |
|
Kaystar |
K-0091 RR |
2.5 |
|
Proseed |
RR 2011 |
2.5 |
|
Hyland |
HX 326 |
2.5 |
|
Prairie Brand |
PB-0072 RR |
2.5 |
|
Stine |
S 0086-4 |
2.5 |
|
Dyna Gro |
DG 34G02 |
2.5 |
|
Stine |
S 0076-4 |
2.5 |
|
Top Farm |
6102 RR |
2.5 |
|
Wensman |
W 20073 RR |
2.5 |
|
Pioneer |
PHI 03-18 (RR) |
2.5 |
|
Prairie Brand |
PB-0094 RR |
2.5 |
|
UAP Dyna-Gro |
DG 32Y09 |
2.5 |
|
AgSource |
9092 RR |
2.5 |
|
Sabre |
133 RR CN |
2.5 |
|
NuTech |
NT 0089 RR |
2.6 |
|
Gold Co Seed |
1300 RR |
2.6 |
|
Northstar |
NS 0018 RR |
2.6 |
|
Ziller |
BT 7090R |
2.6 |
|
Prairie Brand |
PB-1063 RR |
2.6 |
|
Company |
Variety name |
Average |
|
UAP Dyna-Gro |
DG 39P03 |
2.6 |
|
Mustang |
M-094 RR |
2.6 |
|
Proseed |
RR 2080 |
2.6 |
|
Garst |
1490 N |
2.6 |
|
Wensman |
W 2034 RR |
2.6 |
|
Seeds 2000 |
0071 RR |
2.6 |
|
Proseed |
RR 2007 |
2.7 |
|
Ziller |
BT 7084R |
2.7 |
|
"Standard" |
Asgrow 0801 RR |
2.7 |
|
"Standard" |
PFS 0202 RR |
2.7 |
|
Bio Gene |
BG 0050 RR |
2.7 |
|
Seeds 2000 |
0051 RR |
2.7 |
|
"Standard" |
PFS 0202 RR |
2.7 |
|
NDSU |
Walsh |
2.7 |
|
Quality Seed Genetics |
0939 RR |
2.7 |
|
Ziller |
Exp. 62339R |
2.7 |
|
NDSU |
Jim |
2.7 |
|
Garst |
XR 13N33 |
2.7 |
|
Kaystar |
K-0965 RR |
2.7 |
|
NuTech |
NT 0323 RR |
2.8 |
|
Dairyland |
DSR-050/RR |
2.8 |
|
Qual Seed Gen. |
1313 RR/SW |
2.8 |
|
Thunder |
2409 RR |
2.8 |
|
NK Brand |
S06-L6 |
2.8 |
|
Garst |
XR 15Y04 |
2.8 |
|
Gold Country Seed |
725 RR |
2.8 |
|
NK Brand |
CL 431203 |
2.8 |
|
Sabre |
EX 05 |
2.8 |
|
Seeds 2000 |
2021 RR |
2.8 |
|
Ziller |
BT 7133NR |
2.8 |
|
AgSource |
9053 RR |
2.8 |
|
Dairyland |
DST-0604/RR |
2.9 |
|
Northstar |
NS 0808 RR |
2.9 |
|
Garst |
XR 03Y43 |
2.9 |
|
Mycogen |
X53080 RR |
2.9 |
|
U of MN |
MN 0071 |
2.9 |
|
"Standard" |
Glacier |
2.9 |
|
Legend Seeds |
LS 0092 RR |
2.9 |
|
Garst |
XY 12Y20 |
2.9 |
|
NK Brand |
X 302 R |
2.9 |
|
Legend Seeds |
LS 0082 RR |
3.0 |
|
NK Brand |
X 309 R |
3.0 |
|
Hyland |
HX 331 |
3.0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Company |
Variety name |
Average |
|
Seeds 2000 |
2100 RR |
3.0 |
|
Ziller |
Exp. 42310R |
3.0 |
|
DeKalb |
DKB 07-52 |
3.0 |
|
Prograin |
PR 0117 |
3.0 |
|
"Standard" |
Stine 0480 |
3.0 |
|
"Standard" |
Glacier |
3.1 |
|
Brushvale |
BS 0303 |
3.1 |
|
Brushvale |
BS 135-10 |
3.1 |
|
Bio Gene |
BG 0080 RR |
3.1 |
|
Seeds 2000 |
2050 RR |
3.1 |
|
Pioneer |
PHI 03-14 (RR) |
3.1 |
|
Prograin |
Venus |
3.1 |
|
Dairyland |
DSR-040/RR |
3.1 |
|
Legend Seeds |
LS 0091 RR |
3.2 |
|
Peterson Farm Seeds |
PFS 0403 RR |
3.2 |
|
"Standard" |
Mycogen 5072 |
3.2 |
|
Mycogen |
X53022 RR |
3.2 |
|
Thunder |
2406 RR |
3.2 |
|
Prograin |
PR 32102 RR |
3.2 |
|
Brushvale |
BS 0305 |
3.3 |
|
NDSU |
Barnes |
3.3 |
|
Quality Seed Genetics |
0221 RR |
3.3 |
|
"Standard" |
Stine 0480 |
3.3 |
|
Thunder |
24004 RR |
3.3 |
|
Dairyland |
DSR-009/RR |
3.3 |
|
Hyland |
HX 330 |
3.3 |
|
Prograin |
PR 3404 RR |
3.3 |
|
NDSU |
Proto |
3.4 |
|
NDSU |
Sargent |
3.4 |
|
"Standard" |
Mycogen 5072 |
3.4 |
|
Asgrow |
AG 0101 |
3.4 |
|
NK Brand |
MT 107519 |
3.6 |
|
"Standard" |
NuTech 0505 RR |
3.6 |
|
Asgrow |
AG 0601 |
3.7 |
|
Prograin |
PR 0203 RR |
3.7 |
|
Top Farm |
6042 RR |
3.7 |
|
"Standard" |
NuTech 0505 RR |
3.8 |
|
Prograin |
PR 249.137 natto |
4.2 |
|
Mycogen |
X53061 RR |
4.3 |