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Ontario Phytophthora Tolerance Test 2023: Woodslee, Ontario

This Report Contains Published Registered Varieties Only


Planting Date: June 19, 2023

Stand Count Dates:

HUZ Date
2200 & 2400 August 31, 2023
2600 September 2, 2021
2800 September 2, 2021
3100 & 3400 October 10, 2023

Plot Size: Single row, 50 seeds/row

Replications: 4, randomized blocks

Phytophthora root rot testing is carried out on clay soils infested with common races of Phytophthora at Woodslee. Phytophthora Root Rot (PRR) ratings were changed starting in 2019. Previous methodology used counting plants shortly after emergence (3-4 weeks after planting) and a subsequent counting 4 weeks later. The loss was estimated based on the difference between count 2 and count 1, taken as a percentage. The limitation in this counting method is that it does not take into account pre-emergence mortality due to PRR nor does it take into account late season mortality. Starting in 2019 we began expressing the PRR ratings based on final stand in a High phytophthora pressure environment. This final stand was only rated once for all maturity groups and this was again changed to rate the plants near the R6 growth stage which was done in 2020 in order to capture late season PRR damage.


2023 Phytophthora Tolerance Test MG00E & MG00 (2200/2400)

Entry Name   Final Stand % Stand % Loss
2 ABACA 34.25 68.5 31.5
3 Amino R2X 33.00 66.0 34.0
4 Atiron 33.00 66.0 34.0
5 B0073EE 38.50 77.0 23.0
6 Bourke R2X 36.50 73.0 27.0
7 Bronco R2X 34.25 68.5 31.5
10 Donaldo R2X 32.25 64.5 35.5
11 Elmo E3 34.25 68.5 31.5
13 Fresco R2X 7.00 14.0 86.0
14 Hana 27.75 55.5 44.5
15 Hart R2X 36.75 73.5 26.5
16 JAGO 37.75 75.5 24.5
17 Koa 29.25 58.5 41.5
18 Kudo R2X 27.75 55.5 44.5
19 Liska 32.25 64.5 35.5
20 Maya 34.00 68.0 32.0
21 Merino R2X 30.25 60.5 39.5
22 Mozart 26.25 52.5 47.5
32 P002A42E 25.00 50.0 50.0
33 P005A59E 31.25 62.5 37.5
34 Nala 27.50 55.0 45.0
41 PR229001Z 24.00 48.0 52.0
42 PR23X2650 28.25 56.5 43.5
43 PRO 03X74 31.00 62.0 38.0
44 PS 0072 XR 39.50 79.0 21.0
45 PS 0098 XR 38.50 77.0 23.0
46 Rico R2X 38.00 76.0 24.0
47 Salto R2 35.25 70.5 29.5
48 Siberia 21.00 42.0 58.0
50 Enduro E3 43.00 86.0 14.0
53 SI 00723XFN 34.25 68.5 31.5
56 Triquet R2X 24.25 48.5 51.5
57 Utica 32.75 65.5 34.5
58 Verso R2X 32.50 65.0 35.0
59 Young R2X 32.50 65.0 35.0
60 P007A68E treated seed*
61 Sloan check - low field tolerance, rps 10.50 21.0 79.0
62 Conrad check - high field tolerance, rps 28.75 57.5 42.5
63 Williams check - moderate field tolerance, rps 29.75 59.5 40.5
64 OX20-8 check - no field tolerance, Rps 1a 0.75 1.5 98.5
65 Haro(1-7)1 check - minimal field tolerance, rps 11.50 23.0 77.0
Mean of Entries 31.74
CV 31.80

*entry had treated seed and was not included



2023 Phytophthora Tolerance Test MG0 (2600)

Entry Name   Final Stand % Stand % Loss
1 Stine 05EG62 35.50 71.0 29.0
2 Stine 06EG29 38.00 76.0 24.0
3 AAC Kovik 33.00 66.0 34.0
4 AAC Shinju 32.50 65.0 35.0
6 Acardia 34.25 68.5 31.5
7 Acora 35.75 71.5 28.5
8 Acuna 32.00 64.0 36.0
9 Altitude R2 16.25 32.5 67.5
11 Angelica 34.75 69.5 30.5
12 Apollina 37.00 74.0 26.0
13 Asahi 29.75 59.5 40.5
14 Asana 30.25 60.5 39.5
15 Atacama 32.50 65.0 35.0
16 Atena 37.75 75.5 24.5
17 Aurelina 27.50 55.0 45.0
18 Axis E3 MV* MV*
19 Aya 32.25 64.5 35.5
20 B036CE 37.00 74.0 26.0
21 B043EE 31.25 62.5 37.5
22 B074HE 42.75 85.5 14.5
23 Beliveau R2X 34.50 69.0 31.0
24 Canstar 43.00 86.0 14.0
34 Dyno R2X 41.50 83.0 17.0
35 Elico E3 37.75 75.5 24.5
36 Emilio E3 29.25 58.5 41.5
37 Enyo E3 44.75 89.5 10.5
38 PS 0423EN 38.50 77.0 23.0
39 Ezra 35.50 71.0 29.0
40 Genesis 26.75 53.5 46.5
41 Haltifo 33.75 67.5 32.5
42 Harvey E3 36.50 73.0 27.0
43 Havane 30.00 60.0 40.0
45 Hola 29.50 59.0 41.0
46 Kagawa 37.50 75.0 25.0
47 Kristian 40.75 81.5 18.5
48 Kyoto 26.25 52.5 47.5
49 Malart 42.00 84.0 16.0
50 Marula 35.75 71.5 28.5
51 MONDO 41.00 82.0 18.0
52 Mya 32.25 64.5 35.5
54 Nano R2X 34.00 68.0 32.0
55 Navan 35.75 71.5 28.5
63 OAC Acclaim 34.25 68.5 31.5
64 OAC Bruno 27.25 54.5 45.5
65 OAC Carson 31.50 63.0 37.0
66 OAC Champion 25.75 51.5 48.5
67 OAC Elevation 12.25 24.5 75.5
68 OAC Evolution 33.50 67.0 33.0
69 OAC Kamran 32.75 65.5 34.5
70 OAC Strive 33.75 67.5 32.5
71 OAC Wallace 33.75 67.5 32.5
72 Orr R2X 40.25 80.5 19.5
96 P04A98E 30.25 60.5 39.5
98 P06A38E 29.50 59.0 41.0
101 P08A44E 37.25 74.5 25.5
102 Panorama 26.75 53.5 46.5
103 Park E3 34.00 68.0 32.0
104 Pico R2X 35.00 70.0 30.0
105 Katano 30.50 61.0 39.0
112 PS 0322 EN 36.75 73.5 26.5
113 PS 0420 XRN 23.25 46.5 53.5
114 PS 0521 XRN 39.50 79.0 21.0
115 PS 0779 XRN 34.25 68.5 31.5
116 PS 0944 XRN 38.75 77.5 22.5
117 Ramage XF 37.00 74.0 26.0
118 Reece R2X 28.75 57.5 42.5
119 RICHMOND 14.25 28.5 71.5
120 Samson E3 28.25 56.5 43.5
121 Savage R2X 35.75 71.5 28.5
122 Mason XF 20.25 40.5 59.5
123 Sharp E3 28.75 57.5 42.5
124 Ridley XF 31.00 62.0 38.0
125 Seabrook R2X 32.50 65.0 35.0
130 SI 0620XTN 34.25 68.5 31.5
131 SI 0720E3N 37.25 74.5 25.5
132 SI 0921XTN 27.25 54.5 45.5
136 SI 0323E3N 33.00 66.0 34.0
148 Vertigo R2 37.50 75.0 25.0
149 Sloan check - low field tolerance, rps 13.00 26.0 74.0
150 Conrad check - high field tolerance, rps 34.00 68.0 32.0
151 Williams check - moderate field tolerance, rps 29.25 58.5 41.5
152 OX20-8 check - no field tolerance, Rps 1a 0.50 1.0 99.0
153 Haro(1-7)1 check - minimal field tolerance, rps 7.50 15.0 85.0
Mean of Entries 32.35
CV 29.82

*entry had more than 50 seeds



2023 Phytophthora Tolerance Test MG1 (2800)

Entry Name   Final Stand % Stand % Loss
1 Stine 10EG20 35.50 71.0 29.0
2 Stine 12EB32 37.50 75.0 25.0
3 Alinova 36.75 73.5 26.5
4 B103EE 41.75 83.5 16.5
5 B119KE 37.25 74.5 25.5
6 B158DE 43.75 87.5 12.5
7 B163EE 26.25 52.5 47.5
8 B173EE 41.50 83.0 17.0
9 B182ME 40.75 81.5 18.5
10 Baltazar 44.50 89.0 11.0
11 Barton 40.75 81.5 18.5
13 Compass E3 MV** MV**
15 EXP1123XFN 36.50 73.0 27.0
16 Finch 39.75 79.5 20.5
17 Forto 39.50 79.0 21.0
18 Inwood 37.00 74.0 26.0
19 Keith XF 42.00 84.0 16.0
20 Matilda 31.00 62.0 38.0
21 Miko R2 32.75 65.5 34.5
31 OAC Aberdeen 39.00 78.0 22.0
32 OAC Malory 43.75 87.5 12.5
33 OAC Union 40.00 80.0 20.0
34 Odessa 33.75 67.5 32.5
35 P11A10 26.00 52.0 48.0
36 P12T94E 35.25 70.5 29.5
38 P14A12E 19.50 39.0 61.0
40 P17A87E 32.25 64.5 35.5
41 P18A73E 34.00 68.0 32.0
42 P19A37E 38.00 76.0 24.0
46 Mercado XF 37.50 75.0 25.0
48 PS 1022 EN 35.00 70.0 30.0
49 PS 1421 EN 34.75 69.5 30.5
50 PS 1520 XRN 36.25 72.5 27.5
51 PS 1721 EN 40.50 81.0 19.0
52 Rask E3 40.75 81.5 18.5
53 Rondo R2X 43.25 86.5 13.5
54 Savard E3 38.25 76.5 23.5
61 Elliott R2X 30.00 60.0 40.0
67 SI 1120E3N 37.50 75.0 25.0
68 SI 1222E3N 33.75 67.5 32.5
69 SI 1422XTN 26.00 52.0 48.0
70 SI 1820XTN 38.50 77.0 23.0
71 Skyline 37.25 74.5 25.5
72 Summit E3 42.00 84.0 16.0
78 SI 1323XFN 34.75 69.5 30.5
79 SI 1823E3N 32.75 65.5 34.5
82 Haldi 34.25 68.5 31.5
89 Taku 38.75 77.5 22.5
90 Wilma 42.50 85.0 15.0
91 Zeta 37.50 75.0 25.0
92 HDC Blake treated seed*
93 S14-H3 treated seed*
94 Sloan check - low field tolerance, rps 13.00 26.0 74.0
95 Conrad check - high field tolerance, rps 36.25 72.5 27.5
96 Williams check - moderate field tolerance, rps 31.50 63.0 37.0
97 OX20-8 check - no field tolerance, Rps 1a 1.50 3.0 97.0
98 Haro(1-7)1 check - minimal field tolerance, rps 14.50 29.0 71.0
Mean of Entries 36.48
CV 26.65

*entry had treated seed and was not included



2023 Phytophthora Tolerance Test MG2E & MG2L (3100/3400)

Entry Name   Final Stand % Stand % Loss
2 Stine 20EG02 43.50 87.0 13.0
3 Stine 25EG20 36.00 72.0 28.0
4 AAC 26-15 44.50 89.0 11.0
5 AAC Big Ben 44.50 89.0 11.0
6 AAC Wigle 36.25 72.5 27.5
8 B213EE 41.25 82.5 17.5
9 B243EE 41.00 82.0 18.0
10 B253LE 39.75 79.5 20.5
13 PS 1923XFN 36.50 73.0 27.0
14 Express R2X 38.75 77.5 22.5
15 Masters XF 34.75 69.5 30.5
19 OAC Bruton 38.25 76.5 23.5
20 OAC Kent 43.75 87.5 12.5
21 OAC Marvel 41.50 83.0 17.0
22 OAC Stirling 46.25 92.5 7.5
23 P20A48E 40.50 81.0 19.0
25 P22A67E 28.50 57.0 43.0
26 P24A07E 42.25 84.5 15.5
27 PS 2120 EN 42.25 84.5 15.5
28 PS 2322 XFN 41.25 82.5 17.5
29 PS 2521 XFN 45.75 91.5 8.5
30 Rowan 41.50 83.0 17.0
37 Kraft E3 43.50 87.0 13.0
38 Lawson R2X 40.75 81.5 18.5
39 SG 2311 42.25 84.5 15.5
40 SI 2121XTN 41.00 82.0 18.0
43 Tillson 40.00 80.0 20.0
44 Siena 38.50 77.0 23.0
47 Stine 29EF02 40.00 80.0 20.0
48 Stine 31EF02 37.50 75.0 25.0
50 Darby E3 44.25 88.5 11.5
51 PS 2923EN 43.25 86.5 13.5
54 P28A65E 35.75 71.5 28.5
55 P29A19E 40.00 80.0 20.0
56 P30A75E 39.50 79.0 21.0
57 P33A62E 35.00 70.0 30.0
58 PS 3022XFN 48.50 97.0 3.0
61 AAC McRae treated seed*
62 B283EE treated seed*
63 DF 155 treated seed*
64 HDC Blake treated seed*
65 Sloan check - low field tolerance, rps 16.75 33.5 66.5
66 Conrad check - high field tolerance, rps 35.25 70.5 29.5
67 Williams check - moderate field tolerance, rps 36.00 72.0 28.0
68 OX20-8 check - no field tolerance, Rps 1a 0.00 0.0 100.0
69 Haro(1-7)1 check - minimal field tolerance, rps 19.50 39.0 61.0
Mean of Entries 39.58
CV 21.57

*entry had treated seed and was not included