OOPSCC Soybean
Ontario Oil and Protein Seed Crop Committee

TABLE 7. RESISTANT VARIETY PERFORMANCE IN SCN INFESTED FIELDS


Average of 6 Tests (2007-2009) Average of 4 Tests (2008-2009)
Variety Days to Maturity Yield Index (%)   Days to Maturity Yield Index (%)
DH410 110 118 111 135
S18-R6 110 128 111 148
Sherwin 111 130   112 147
S23-T5 114 138   114 156
S17-A1* -- -- 115 135
OAC Marvel 114 137 115 158
30-07R* 115 138 116 147
PS 90 NRR* 117 128 116 136
31-52R* 118 140   119 155
S25-A5* 118 138   119 152
5N262RR* 120 118 120 127
S26-F9 121 135 122 154
32-04R* 121 134 122 149
32-52R* 124 153 125 163
Storm* 127 108   127 105
RC3125* -- --   129 151
aSusceptible Yield Index is: 100% 100%
Susceptible Yield (RR): 2.55 T/ha or 37.9 bu/ac 2.36 T/ha or 35.0 bu/ac
Susceptible Yield (Conv): 2.44 T/ha or 36.2 bu/ac 2.08 T/ha or 30.8 bu/ac
* Roundup Ready (RR) varieties, tested under a RR management system.
a Susceptible Yield Index is based on three high yielding susceptible varieties.
Resistance source is PI88788 for all varieties listed.

Yield indices are the result of test site locations with high to very high SCN infestations as follows:
2007-2009 – 4,000 to 8,000 eggs/100g of soil,
2008-2009 – 3,000 to 7,000 eggs/100g of soil.


2-Year Yield vs Maturity Graph


3-Year Yield vs Maturity Graph

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