2024 Phytophthora Tolerance Test Results

Ontario Phytophthora Tolerance Test 2024: Woodslee, Ontario

This Report Contains Published Registered Varieties Only.

Planting Date: June 13, 2024

Stand Count Dates:

HUZ	Date
2200 & 2400	August 29, 2024
2600	September 16, 2024
2800	September 16, 2024
3100 & 3400	September 27, 2024

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.

2024 Phytophthora Tolerance Test MG00E & MG00 (2200/2400)

Entry	Name		Final Stand/50 Plants	% Stand	% Loss
2	ABACA		34	67	33
3	Amino R2X		38	77	23
4	Atiron		37	73	27
5	Aurelina		36	71	29
6	B0073EE		30	60	40
7	Bellistar		19	38	62
8	Bourke R2X		35	71	29
9	Bronco R2X		25	50	50
12	Donaldo R2X		39	78	22
13	Elmo E3		36	71	29
14	Enduro E3		38	75	25
15	Fresco R2X		26	52	48
16	Hana		32	64	36
17	Hart R2X		38	76	24
18	Jador		27	54	46
19	JAGO		34	69	31
20	Koa		34	67	33
21	Kudo R2X		24	47	53
26	Liska		24	49	51
27	Luxor		36	73	27
28	Maya		42	83	17
29	Merino R2X		32	63	37
30	Mozart		30	60	40
31	Nala		32	64	36
37	P002A42E		29	59	41
38	P005A59E		29	58	42
39	Panorama		34	67	33
43	PR24X2500		35	69	31
44	PR24XF2450		27	54	46
45	Prostar		24	47	53
47	Rico R2X		25	50	50
48	S0009-J5X		22	45	55
49	S001-D8X		28	56	44
50	S003-R5X		36	72	28
51	S007-A2XS		26	52	48
52	S007-Z1X		30	60	40
53	S02-M4XF		36	71	29
54	S03-V5E3		31	63	37
55	S04-J6X		38	77	23
56	Salto R2		35	70	30
58	SC24-2550XF		36	72	28
59	SI 00924XFN		31	62	38
60	SVX0124XT		29	58	42
61	SVX23T00S47		35	70	30
64	Triquet R2X		31	61	39
65	Utica		32	63	37
66	Young R2X		30	59	41
67	Conrad	check – high field tolerance, rps	30	60	40
68	Haro(1-7)1	check – minimal field tolerance, rps	6	11	89
69	OX20-8	check – no field tolerance, Rps 1a	0	1	99
70	Sloan	check – low field tolerance, rps	10	20	80
71	Williams	check – moderate field tolerance, rps	32	64	36
		Mean of entries	30
		Coefficient of variation (%)	28

2024 Phytophthora Tolerance Test MG0 (2600)

Entry	Name		Final Stand	% Stand	% Loss
1	AAC Kovik		32	64	36
2	AAC Shinju		31	62	38
3	Abiza		27	53	47
4	Acora		24	49	51
5	Acuna		23	47	53
6	Alameda		36	73	27
7	Algebra		25	50	50
8	Altitude R2		28	56	44
10	Angelica		29	57	43
11	Apollina		22	45	55
12	Atacama		27	55	45
13	Atanga		33	66	34
14	Atena		37	73	27
15	Axis E3		32	64	36
16	Aya		37	75	25
17	B036CE		32	64	36
18	B043EE		25	49	51
19	B074HE		27	53	47
20	Beliveau R2X		34	67	33
21	Canstar		26	53	47
27	CP0324X		25	51	49
30	Dunham		28	55	45
31	Dyno R2X		28	55	45
34	Enyo E3		38	75	25
36	Ezra		30	60	40
37	Finch		33	65	35
38	Genesis		31	62	38
39	Harvey E3		31	62	38
40	Havane		35	69	31
41	Hola		34	68	32
42	Kagawa		31	62	38
43	Kyoto		15	30	70
47	Marula		24	49	51
48	Mason XF		34	67	33
49	Matilda		23	45	55
50	Miko R2		24	48	52
51	Mya		34	67	33
52	NA0800		32	65	35
53	Nano R2X		34	68	32
54	Navan		35	71	29
60	OAC Champion		23	47	53
61	OAC Evolution		27	55	45
62	OAC Kamran		25	51	49
63	OAC Strive		37	74	26
64	OAC Wallace		26	51	49
65	Odessa		30	60	40
66	Orr R2X		27	54	46
80	P04A98E		31	62	38
81	P06A38E		34	68	32
83	P08A44E		28	55	45
84	Pico R2X		34	69	31
86	PR24XF2750		29	57	43
87	PS 0423EN		30	59	41
88	PS 0521 XRN		29	58	42
89	PS 0779 XRN		32	64	36
90	PS 0944 XRN		31	62	38
91	Ramage XF		31	63	37
92	Ridley XF		37	73	27
93	S01-D5		30	60	40
94	S04-K9		33	66	34
95	S06-A3XF		33	65	35
96	S07-K5X		32	64	36
97	S07-M8		24	48	52
98	S09-B5XF		35	70	30
99	S09-H7E3		30	61	39
100	S10-R2		28	56	44
101	S11-A4E3		33	66	34
102	S11-U2XF		38	75	25
103	S12-M5X		35	69	31
104	Savage R2X		36	72	28
105	SC24-2650XF		33	66	34
106	SC24-2675XF		37	74	26
107	SC24-2700E3		21	42	58
108	Seabrook R2X		36	73	27
116	SFL 06-44 IP		36	71	29
117	SI 0323E3N		31	62	38
118	SI 0620XTN		26	53	47
119	SI 0720E3N		36	72	28
120	SI 0921XTN		30	60	40
127	Verdo		36	72	28
128	Wilma		35	71	29
129	Conrad	check – high field tolerance, rps	30	59	41
130	Haro(1-7)1	check – minimal field tolerance, rps	6	12	88
131	OX20-8	check – no field tolerance, Rps 1a	0	0	100
132	Sloan	check – low field tolerance, rps	13	26	74
133	Williams	check – moderate field tolerance, rps	24	49	51
		Mean of entries	29
		Coefficient of variation (%)	23

2024 Phytophthora Tolerance Test MG1 (2800)

Entry	Name		Final Stand	% Stand	% Loss
2	Alinova		33	67	33
3	B103EE		33	66	34
4	B119KE		25	50	50
5	B158DE		35	70	30
6	B163EE		9	18	82
7	B173EE		30	60	40
8	B182ME		36	73	27
9	Baltazar		35	70	30
10	Compass E3		27	53	47
12	EXP 1224 EN		25	49	51
14	Forto		33	66	34
16	HDC Blake		33	66	34
17	Inwood		34	69	31
18	Keith XF		37	73	27
19	Kraft E3		36	73	27
20	Mercado XF		31	63	37
21	Milito		37	74	26
22	NA1800		29	57	43
24	OAC 18-63C-SCN		19	38	62
26	OAC Aberdeen		36	72	28
27	OAC Malory		36	72	28
28	OAC Union		39	78	22
30	P11A10		29	59	41
32	P14A12E		15	29	71
34	P17A87E		37	74	26
35	P18A73E		34	68	32
36	P19A37E		37	73	27
38	PR24E2875		20	41	59
39	PS 1022 EN		35	70	30
40	PS 1344 XFN		38	77	23
41	PS 1721 EN		37	74	26
42	Rask E3		35	69	31
43	Rowan		20	39	61
44	S10-W8XF		32	65	35
45	S12-J7		35	69	31
46	S13-Y4XF		28	55	45
47	S14-C7XF		38	76	24
48	S14-H3		22	44	56
49	S15-G9E3S		28	55	45
50	S16-B8		30	61	39
51	S16-K2X		27	54	46
52	S20-W9		36	72	28
61	SI 1222E3N		31	61	39
62	SI 1422XTN		33	65	35
63	SI 1820XTN		29	58	42
64	SI 1823E3N		35	70	30
65	Skyline		36	72	28
66	Summit E3		34	68	32
80	Taku		37	74	26
81	Zeta		27	54	46
82	Conrad	check – high field tolerance, rps	29	58	42
83	Haro(1-7)1	check – minimal field tolerance, rps	7	14	86
84	OX20-8	check – no field tolerance, Rps 1a	0	1	99
85	Sloan	check – low field tolerance, rps	11	22	78
86	Williams	check – moderate field tolerance, rps	27	54	46
		Mean of entries	30
		Coefficient of variation (%)	27

2024 Phytophthora Tolerance Test MG2E & MG2L (3100/3400)

Entry	Name		Final Stand	% Stand	% Loss
2	AAC 26-15		35	70	30
3	AAC Big Ben		36	73	27
4	AAC McRae		25	51	49
5	AAC Wigle		26	53	47
6	B213EE		23	46	54
7	B243EE		30	60	40
8	B253LE		31	61	39
9	B283EE		32	63	37
13	Equator E3		18	35	65
16	Express R2X		39	77	23
17	NA2000		30	61	39
18	NA2700		32	65	35
19	OAC Bruton		33	65	35
20	OAC Marvel		28	55	45
21	OAC Stirling		27	53	47
23	P20A48E		32	64	36
24	P21A53E		30	61	39
25	P22A67E		34	69	31
26	P24A07E		34	68	32
27	P25A16E		38	75	25
28	P28A65E		27	54	46
29	P29A19E		32	63	37
30	P30A75E		33	66	34
31	P33A62E		40	80	20
32	PS 1923XFN		35	70	30
33	PS 2120 EN		29	58	42
34	PS 2322 XFN		39	78	22
35	PS 2521 XFN		34	69	31
36	PS 2923EN		36	72	28
37	S18-F1E3S		32	64	36
38	S20-L8X		28	56	44
39	S22-A2E3		34	67	33
40	S25-K4XF		34	68	32
41	S26-E3		41	82	18
42	S29-N5E3		26	52	48
43	S29-R5X		30	60	40
44	S32-J5XF		28	57	43
54	SC24-3125XF		35	70	30
56	SG 2311		37	74	26
57	Siena		38	75	25
69	Tillson		36	72	28
70	Conrad	check – high field tolerance, rps	24	47	53
71	Haro(1-7)1	check – minimal field tolerance, rps	11	23	77
72	OX20-8	check – no field tolerance, Rps 1a	0	0	100
73	Sloan	check – low field tolerance, rps	14	28	72
74	Williams	check – moderate field tolerance, rps	28	55	45
		Mean of entries	30
		Coefficient of variation (%)	26