Market Class: Green Pea
Year Release to Select Seed Growers: 2012
Sub-licensed Outside of SK: No
International Distribution Rights: Canterra Seeds Ltd./Meridian Seeds
Breeder: Dr. Tom Warkentin, Crop Development Centre, University of Saskatchewan, Saskatoon, SK
Plant Breeders Rights: No
Description
CDC Limerick is a high protein, green cotyledon, semi-leafless field pea variety. Its intense green color and resistance to bleaching is a strong asset for this variety. CDC Limerick ranked as the highest protein pea versus both yellow and green pea varieties in the 2019 co-op and regional trials in Saskatchewan (Table 1). In two years of testing in the field pea co-op registration trial in 2009–2010, CDC Limerick yielded 99% of the mean of the green pea check varieties CDC Striker and Cooper (Table 2). In 10 years of testing in the Saskatchewan co-op and regional trials, CDC Limerick yielded 95% of CDC Amarillo in the south and 90% in the north (Table 1). CDC Limerick does not have PBR protection.
Strengths
- Good bleaching resistance
- Intense green cotyledon color
- Medium vine length
- High protein concentration
- Good lodging resistance, similar to CDC Amarillo
- Good resistance to seed coat breakage
- Powdery mildew resistance
Neutral
- Good yield
- Medium maturity
- Round seed shape
- Medium seed weight
- Moderate cooking time
- Fair resistance to Mycosphaerella blight and Fusarium wilt
Table 1: Agronomic Performance for CDC Limerick from Co-op and Regional Trials in Saskatchewan
| VARIETY | YEAR REGISTERED | YEARS TESTED | YIELD % AMARILLO | MATURITY | LODGING (1-9)** | VINE LENGTH (CM) | RESISTANCE TO: | SEED WEIGHT (G/1000) | PROTEIN VS. CDC AMARILLO | ||||||
| 1, 2, & SOUTH 3* | NORTH3 & 4* | MYCOSPHAERELLA BLIGHT*** | POWDERLY MILDEW | FUSARIUM WILT | SEED COAT BREAKAGE | SEED COATDIMPLING**** | BLEACHING | ||||||||
| CDC AMARILLO (CHECK) | 2012 | 10 | 100 | 100 | MEDIUM | 3.5 | 85 | 4.5 | R | MR | FAIR | FAIR | n/a | 230 | 23.0 |
| BLUEMAN | 2018 | 3 | 91 | 88 | MEDIUM | 4.5 | 85 | 4.5 | R | I | n/a | GOOD | FAIR | 220 | +0.3 |
| AAC COMFORT | 2016 | 4 | 90 | 99 | MEDIUM | 4.5 | 85 | 4.5 | R | I | GOOD | GOOD | GOOD | 250 | -0.4 |
| COOPER | 2004 | 8 | 89 | 80 | MEDIUM | 4.0 | 80 | 5.0 | R | I | FAIR | GOOD | FAIR | 270 | +0.9 |
| CDC FOREST | 2017 | 6 | 100 | 101 | MEDIUM | 4.0 | 85 | 4.5 | R | I | GOOD | GOOD | GOOD | 230 | -0.2 |
| CDC GREENWATER | 2014 | 9 | 99 | 92 | MEDIUM | 3.5 | 90 | 4.0 | R | MR | FAIR | FAIR | GOOD | 230 | -1.1 |
| CDC LIMERICK | 2012 | 10 | 95 | 90 | MEDIUM | 3.5 | 85 | 4.0 | R | I | GOOD | GOOD | GOOD | 210 | +2.8 |
| CDC PATRICK | 2008 | 10 | 87 | 86 | MEDIUM | 4.5 | 80 | 4.5 | R | MR | GOOD | GOOD | GOOD | 190 | -1.0 |
| CDC PLUTO | 2010 | 8 | 92 | 84 | MEDIUM | 5.5 | 80 | 4.5 | R | I | GOOD | GOOD | GOOD | 160 | -0.2 |
| AAC RADIUS | 2014 | 6 | 77 | 77 | MEDIUM | 5.0 | 85 | 4.5 | R | I | VERY GOOD | GOOD | GOOD | 230 | +0.5 |
| CDC RAEZER | 2011 | 10 | 81 | 80 | EARLY | 3.5 | 85 | 5.0 | R | MR | GOOD | GOOD | GOOD | 220 | -0.3 |
| AAC ROYCE | 2014 | 5 | 92 | 84 | MEDIUM | 5.0 | 70 | 5.0 | R | I | FAIR | FAIR | GOOD | 260 | +0.4 |
| CDC SAGE | 2005 | 5 | 73 | 71 | MEDIUM | 4.0 | 80 | 5.0 | R | MR | GOOD | FAIR | GOOD | 220 | n/a |
| CDC SPRUCE | 2016 | 7 | 94 | 99 | MEDIUM | 4.0 | 85 | 4.5 | R | I | FAIR | FAIR | GOOD | 240 | +0.1 |
| CDC STRIKER | 2002 | 10 | 81 | 80 | MEDIUM | 3.5 | 80 | 4.5 | S | MR | VERY GOOD | GOOD | GOOD | 240 | +2.0 |
Source: Varieties of Grain Crops 2019 (SaskSeed Guide)
*Area 1: Brown soil zone; Area 2: Dark brown; Area 3: Black; Area 4: Dark grey
**Lodging score: 1 = Upright; 9 = Completely lodged
***Mycosphaerella blight score: 1 = No disease, 9 = Completely blighted
****Seed coat dimpling: Very Good = 0-5%; Good = 6-20%; Fair = 21-50%
Table 2: Agronomic Performance of CDC Limerick Compared to the Checks (Pea Co-op Test A, 2009 – 2010)
| VARIETY | YIELD (KG/HA) | YIELD (% MEAN OF CHECKS) | DAYS TO MATURITY | LODGING* | SEED WEIGHT (MG) | SEED SHAPE** | BLEACH*** | GREEN COLOUR INTENSITY**** | SEED COAT BREAKAGE (%) | CRUDE PROTEIN (%) | COOKING TIME (MIN)***** |
|---|---|---|---|---|---|---|---|---|---|---|---|
| CDC STRIKER (CHECK) | 4966 | 97 | 104 | 3.5 | 244 | 1.9 | 3.0 | 3.5 | 5 | 24.9 | 33.9 |
| COOPER (CHECK) | 5265 | 103 | 106 | 3.9 | 269 | 3.2 | 3.3 | 3.9 | 16 | 23.8 | 36.6 |
| CDC LIMERICK | 5256 | 99 | 106 | 3.0 | 207 | 2.1 | 2.6 | 2.8 | 2 | 26.0 | 36.5 |
| CV | 9 | ||||||||||
| LSD 05 | 301 | 0.9 | 0.6 | 6.9 | 0.3 | 0.2 | 0.2 | 5.2 | 0.6 | 26.4 | |
| # Locations | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 8 | 12 | 2 |
Source: CDC Pulse Breeding Group, U of S
*Lodging score: 1 = Upright; 9 = Completely lodged
**Seed shape: 1 = Round; 5 = Cubic
***Bleaching score: 1 = No bleaching, 5 = Completely bleached
****Green colour intensity: 1 = Very intense; 5 = Pale
*****Cooking time = Mattson cooking time (min)
Table 3: Disease Resistance Data of CDC Limerick Compared to the Checks (Pea Co-op Test A, 2009 – 2010)
| VARIETY | MYCO (MB)* | MYCO (SK)** | AUDPC – MB*** | FUSARIUM WILT (%) | POWDERY MILDEW**** |
|---|---|---|---|---|---|
| CDC STRIKER (CHECK) | 5.7 | 5.7 | 16.2 | 4.8 | 5 |
| COOPER (CHECK) | 5.4 | 5.4 | 15.3 | 15.9 | 0 |
| CDC LIMERICK | 5.0 | 5.5 | 15.2 | 9.4 | 0 |
| LSD 05 | 0.45 | 1.74 | 2.7 | 6.6 | 1.9 |
| # Locations | 2 | 2 | 2 | 2 | 2 |
Source: CDC Pulse Breeding Group, U of S
*Myco (MB) = mycosphaerella blight assessed at Morden, MB (1 = No disease, 9 = Completely blighted)
**Myco (SK) = mycosphaerella blight assessed at Saskatoon, SK.
***AUDPC = mycosphaerella blight area under the disease progress curve assessed at Morden
****Powdery mildew: 0 = No disease, 9 = Completely mildewed
