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 2004, to compare the chlorosis resistance of about 170 soybean entries to iron chlorosis. The sites were located near Argusville, Arthur, Colfax, Galesburg, and Leonard, ND. The sites ranged in pH from 7.6 to 8.3, salinity (EC) from 0.3 to 1.2 mmho/cm, and % CaCO3 ranging from 1.4 to 6.3 %. Forty seeds were planted in short (5Õ) rows on 30-inch centers. The experimental design was a randomized complete block with four replications.
Visual ratings were made on a 1-5 scale, with 1=representing no chlorosis and 5= the most severe chlorosis. Ratings were intended for the 2-3 trifoliolate stage, then 2, and 4 weeks afterwards. Fewer ratings were possible in 2004 than in prior years, due to abnormal overall growth at the 2-3 trifoliolate stage due to cold weather (most sites), uneven recovery across the plot (Argusville), herbicide drift (Arthur), and such severe chlorosis that most varieties failed after the 4th trifoliolate stage (Galesburg).
Ten 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. 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 28 observations, compared to 36 observations in 2003. It was a challenging year, but the standards separated themselves as expected.
If a field produces isolated or temporary chlorosis, we generally recommend that varieties have a chlorosis resistance in the range of Council or Asgrow 0801 or better. On fields with significant chlorosis problems, where yellowing persists for more than a week or so, and growth is obviously affected by chlorosis, only varieties with the highest levels of resistance should be planted, consistent with other considerations, such as maturity.
www.soilsci.ndsu.nodak.edu/yellowsoybeans/
This research was sponsored by the North Dakota Soybean Council.
Table 1. Average chlorosis scores from five locations, North Dakota, 2004.
|
Company |
Variety |
Average chlorosis |
|
|
|
score |
|
*Standard |
A-1-1 |
1.4 |
|
*Standard |
A-1-1 |
1.5 |
|
*Standard |
S2000 2070 RR |
1.8 |
|
*Standard |
S2000 2070 RR |
1.9 |
|
Legend Seeds |
LS 0709RR |
2.0 |
|
Legend Seeds |
LS 0601RR |
2.0 |
|
Sabre |
058 RR |
2.1 |
|
Garst |
0601 RR |
2.1 |
|
Gold Country |
3205 RR |
2.1 |
|
Pioneer |
90M90 |
2.1 |
|
Wensman |
W 2054 RR |
2.1 |
|
*Standard |
Traill |
2.1 |
|
Mallard |
RR 0611 |
2.1 |
|
*Standard |
Traill |
2.2 |
|
Prograin |
S97 187.31 |
2.2 |
|
Wensman |
W2144 RR |
2.2 |
|
Gold Country |
GCS 2503 RR |
2.2 |
|
Garst |
XR 12Y26 |
2.2 |
|
Monsanto |
Exp 302A RR |
2.2 |
|
Pioneer |
90M60 |
2.2 |
|
Kaystar |
K-0520 RR |
2.2 |
|
Prairie Brand |
PB 0234 RR |
2.2 |
|
Peterson Farm Seed |
PFS 0502 RR |
2.2 |
|
Mallard |
RR 0212 |
2.2 |
|
Hyland |
RR Regal |
2.2 |
|
Dyna Gro |
31F02 |
2.2 |
|
*Standard |
Council |
2.2 |
|
Dairyland |
DSR-007/RR |
2.3 |
|
Stine |
S 0536-4 |
2.3 |
|
Stine |
S 0606-4 |
2.3 |
|
Croplan |
RT 0669 |
2.3 |
|
*Standard |
Council |
2.3 |
|
Prairie Brand |
PB 00943 RR |
2.3 |
|
Mycogen |
5B 052 RR |
2.3 |
|
NuTech |
NT-0888 RR |
2.3 |
|
Monsanto |
AG 00802 |
2.3 |
|
Ziller Seed |
Exp 44310 R |
2.3 |
|
Prairie Brand |
PB 0554 RR |
2.3 |
|
Garst |
1703 RR |
2.3 |
|
NuTech |
NT-0525 RR |
2.3 |
|
Sabre |
038 RR |
2.4 |
|
Hyland |
RR Royal |
2.4 |
|
Mustang |
M-025 RR |
2.4 |
|
Ziller Seed |
Exp 44207R |
2.4 |
|
U-MN |
MN M97-121030 |
2.4 |
|
Kaystar |
K-0250 RR |
2.4 |
|
Dyna Gro |
DG 32F12 |
2.4 |
|
Wensman |
W 2074 RR |
2.4 |
|
Seeds 2000 |
2060RR |
2.4 |
|
NuTech |
NT-1141 RR |
2.4 |
|
Croplan |
RT 0269 |
2.4 |
|
Stine |
S 0906-4 |
2.4 |
|
Prairie Brand |
PB 0754 RR |
2.4 |
|
Gold Country |
GCS 2506 RR |
2.4 |
|
North Star |
NS 0610 RR |
2.4 |
|
Ziller Seed |
BT 7090R |
2.4 |
|
Prograin |
S 99031 W.04 |
2.4 |
|
Gold Country |
923 RR |
2.4 |
|
Proseed |
RR 20-07 |
2.4 |
|
Monsanto |
AG 0301 |
2.4 |
|
Stine |
S 0206-4 |
2.4 |
|
Dairyland |
DSR-C900/RR |
2.4 |
|
Prograin |
S99 006-53 |
2.4 |
|
Croplan |
RT 0073 |
2.4 |
|
Legend Seeds |
LS 0224RR |
2.4 |
|
TopFarm |
6102 |
2.4 |
|
Mallard |
RR 1314 |
2.4 |
|
Kaystar |
K-1140 RR |
2.5 |
|
Ziller Seed |
Exp 33513 R |
2.5 |
|
Proseed |
RR 20-80 |
2.5 |
|
North Star |
NS 0037 RR |
2.5 |
|
North Star |
NS 0110 RR |
2.5 |
|
NuTech |
NT-0121 RR |
2.5 |
|
Mycogen |
5B 022 RR |
2.5 |
|
Bio Gene |
BG 0203 RR |
2.5 |
|
Garst |
XR 18C21 |
2.5 |
|
Prairie Brand |
PB 0614 RR |
2.5 |
|
U-MN |
MN M98-101137 |
2.5 |
|
Mycogen |
5B 077 RR |
2.5 |
|
Gold Country |
GCS 825 RR |
2.5 |
|
NDSU |
LaMoure |
2.5 |
|
Peterson Farm Seed |
PFS 05006 RR |
2.5 |
|
Croplan |
RT 0907 |
2.5 |
|
Proseed |
RR 30-51 |
2.5 |
|
Dyna Gro |
SX 04200 |
2.5 |
|
Seeds 2000 |
0051RR |
2.5 |
|
Seeds 2000 |
0071RR |
2.5 |
|
NuTech |
NT-0626 RR |
2.5 |
|
Roughrider Genetics |
RG 200 RR |
2.5 |
|
Bio Gene |
BG 0050 RR |
2.5 |
|
Prograin |
S97 187.11 |
2.5 |
|
Monsanto |
AG 1102 |
2.5 |
|
Mustang |
E-0651 RR |
2.5 |
|
North Star |
NS 0509 RR |
2.5 |
|
Golden Harvest |
X-40608RR |
2.5 |
|
Legend Seeds |
LS 0093RR |
2.5 |
|
Mustang |
M-055 RR |
2.5 |
|
Peterson Farm Seed |
0511 RR |
2.5 |
|
Gold Country |
GCS 7505 RR |
2.6 |
|
Golden Harvest |
X-41060RR |
2.6 |
|
Peterson Farm Seed |
PFS 05061 RR |
2.6 |
|
Peterson Farm Seed |
PFS 05062 RR |
2.6 |
|
Croplan |
RT 0396 |
2.6 |
|
Dyna Gro |
SX 04211 |
2.6 |
|
Prograin |
S 99030 W.49 |
2.6 |
|
Golden Harvest |
H-1350RR |
2.6 |
|
Croplan |
RT 0874 |
2.6 |
|
Mallard |
RR 1111 |
2.6 |
|
*Standard |
AG 0801 |
2.6 |
|
Monsanto |
AG 1001 |
2.6 |
|
Prograin |
S 99047.11 |
2.6 |
|
Wensman |
W 20077 RR |
2.6 |
|
Bio Gene |
BG 0092 RR |
2.6 |
|
Wensman |
W 2121 RR |
2.6 |
|
Bio Gene |
BG 0080 RR |
2.6 |
|
Brushvale Seeds |
BHO 310 |
2.6 |
|
Prograin |
S 99028W.30 |
2.6 |
|
U-MN |
MN M97-104145 |
2.6 |
|
Wensman |
W 20091 RR |
2.6 |
|
North Star |
NS 0056 RR |
2.6 |
|
North Star |
NS 0099 RR |
2.6 |
|
Pioneer |
90M20 |
2.6 |
|
Sabre |
133 RR Cn |
2.6 |
|
*Standard |
AG 0801 |
2.6 |
|
Dyna Gro |
DG 36R01 |
2.6 |
|
Peterson Farm Seed |
0512 RR |
2.6 |
|
Mycogen |
X 54151 NRR |
2.7 |
|
*Standard |
PFS 0202 RR |
2.7 |
|
Dairyland |
DST-02-000/RR |
2.7 |
|
Brushvale Seeds |
BHO 311 |
2.7 |
|
NK Brand |
X 411 R |
2.7 |
|
Garst |
XR 05P40 |
2.7 |
|
Sabre |
215 RR |
2.7 |
|
Hyland |
RR Ramsey |
2.7 |
|
Monsanto |
AG 0602 |
2.7 |
|
Prograin |
S 99031 W.27 |
2.7 |
|
Seeds 2000 |
2090RR |
2.7 |
|
TopFarm |
36084 |
2.7 |
|
*Standard |
Glacier |
2.7 |
|
Seeds 2000 |
2130RR |
2.7 |
|
NK Brand |
S04-Z9 |
2.7 |
|
*Standard |
Glacier |
2.7 |
|
Proseed |
RR 30-04 |
2.8 |
|
*Standard |
PFS 0202 RR |
2.8 |
|
Dyna Gro |
DG 30F05 |
2.8 |
|
Hyland |
RR Reliant |
2.8 |
|
NK Brand |
S06-L6 |
2.8 |
|
Kaystar |
K-0710 RR |
2.8 |
|
Dairyland |
DSR-075/RR |
2.8 |
|
NK Brand |
X 402 R |
2.8 |
|
Hyland |
RR Randall |
2.9 |
|
Golden Harvest |
H-1091RR |
2.9 |
|
Mallard |
RR X0111 |
2.9 |
|
Mallard |
RR 0514 |
2.9 |
|
Garst |
0765 RR |
2.9 |
|
Golden Harvest |
H-0544RR |
2.9 |
|
Dairyland |
DST-0604/RR |
2.9 |
|
Prairie Brand |
PB 0834 RR |
2.9 |
|
Bio Gene |
BG 0090 RR |
2.9 |
|
Gold Country |
1406 RR |
2.9 |
|
Pioneer |
91M10 |
3.0 |
|
Mycogen |
5B 062 RR |
3.0 |
|
TopFarm |
6002 |
3.0 |
|
TopFarm |
6020 |
3.0 |
|
Brushvale Seeds |
BHO 307 |
3.0 |
|
Pioneer |
91M51 |
3.0 |
|
NK Brand |
X 309 R |
3.0 |
|
Dairyland |
DSR-050/RR |
3.1 |
|
TopFarm |
6052 |
3.1 |
|
Peterson Farm Seed |
PFS 0508 RR |
3.1 |
|
Ziller Seed |
Exp 74309R |
3.1 |
|
Golden Harvest |
X-40877 RR |
3.1 |
|
U-MN |
MN 1006 CN |
3.1 |
|
Garst |
XR 09P09 |
3.1 |
|
*Standard |
Stine 0480 |
3.1 |
|
Hyland |
RR Rugged |
3.1 |
|
Mallard |
RR 0914 |
3.2 |
|
*Standard |
Stine 0480 |
3.2 |
|
Brushvale Seeds |
BHO 317 |
3.2 |
|
Pioneer |
EXP 001 |
3.2 |
|
Roughrider Genetics |
RG 405 RR |
3.3 |
|
Brushvale Seeds |
BS 694 |
3.3 |
|
Mycogen |
5B 098 RR |
3.4 |
|
*Standard |
Mycogen 5072 |
3.5 |
|
*Standard |
Mycogen 5072 |
3.5 |
|
*Standard |
NT 0505 RR |
3.8 |
|
*Standard |
NT 0505 RR |
4.0 |
|
Peterson Farm Seed |
22 Natto |
4.1 |