University of Missouri Extension

Mississippi County

Root Knot Nematode Varieties

Root Knot Nematode Resistant RR Soybeans

Some Group IV-V Soybean Varieties That Show Resistance

To Root Knot Nematode Based on Data from Screening Trials by

The University of Missouri – Delta Center and the University of Arkansas

Variety	Maturity	Reaction			Seed Source
	Group IV	RKN*	SCN***	FELS***
AG 4403**	44	MR-MS	R3 MR14	S	Monsanto Corp. Mathews, MO
Armor GP 474 (Variety not listed on website)	47	MR	R3 MR14	MR	Cullum Seed Co. Fisher, AR
Armor 44-R4 (Variety not listed on website)	44	MR	R3 MR14	MR	Cullum Seed Co. Fisher, AR
DK4461 RR	44	MR (AR)	R3 MR14	S	Delta King Seed McCrory, AR
DP 4331 RR	43	MR (AR)	R3 MR14	S	Delta & Pine Land Scott, MS
HBK 4924	49	MS	R3 MR14	MR	Hornbeck Seed Dewitt, AR
GH 4534 RR/N	45	MR	R3 MR14	S	Golden Harvest Pekin, IL
MPV 4905n RR	49	MR	R3 MR14	MS	Midwest Premium Genetics Concordia,MO
Progeny 4401 RR	44	MR	R3 MR14	S	Erwin Keith Seed Wynne, AR
USG 7440N/RR	44	MR	R3 MR14	S	UniSouth Genetics Nashville, TN
P94M80	48	MR	R3 MR14	MR	Pioneer Hibred Johnston, IA
P94M90	49	MR	R3 MR14	MR	Pioneer Hibred Johnston, IA
Richmond 649RD	49	MR	R3 MR14	?	Merschman Seed West Point, IL
USG 7473N/ RR	47	R	HR 2,5,6,9	MS-MR	UniSouth Genetics Nashville, TN
Group V
Armor 53-K3	52	MR	R3 MR14	R	Cullum Seed Fisher, AR
Crows C5118R	51	MR	R3 MR14	MR	Crows Seed Milford, IL
DK 5161 RR	51	MS	R3,MR14	MR	Delta King Seed McCrory, AR
DK 52-K6	52	MR	R3, 14	MR	Delta King Seed McCrory, AR
DK 5368 RR	53	MR	R3, 14	MR	Delta King Seed McCrory, AR
DK 5366 RR	53	MR	S	MS-MR	Delta King Seed McCrory, AR
DP 5634	56	MR-MS	R3, 6, 14	MR	Delta Pine Seed Scott, MS
HBK 5324	53	MR	R3, MR14	MR	Hornbeck Seed Dewitt, AR
HBK 5226	52	R	MR3	MR	Hornbeck Seed Dewitt, AR
NKS 57-A4	57	R	MR3, 9, 14	?	Syngenta Seeds Minneapolis, MN
NKS 57-P1	57	R	MR3, 9, MR1, 14	?	Syngenta Seeds Minneapolis, MN
Progeny 5250 RR	52	MR	R3 MR14	MR	Erwin Keith Seed Wynne, AR
Progeny 5115 RR	51	MR	R3 MR14	R	Erwin Keith Seed Wynne, AR
P95M30	53	MR	R3 MR14	R	Pioneer Hibred Johnston, IA
P95M50	55	MR	MR3	MR	Pioneer Hibred Johnston, IA
P95M60	56	MR	R1,2,3,5,14	MR	Pioneer Hibred Johnston, IA
P95M80	58	MR	R3	MS	Pioneer Hibred Johnston, IA
Trisoy 5060n	50	MR	MR3, 14	?	Trisler Seed Farm Fairmount, IL
Terral 55R15	55	R	MR1, 3	R	Terral Seed Lake Providence, LA
Terral 56R12	56	MR	R3	MS	Terral Seed Lake Providence, LA
USG 7562RR	56	MR	R3 MR14	MR	UniSouth Genetics Nashville, TN

***Note: Frogeye ratings based on screening results from the University of Arkansas and the University of Missouri. SCN ratings were from various seed company literature or in conversations with research personnel.

*Some lines were screened only in Arkansas or Missouri as noted (AR or MO) to root knot nematode.

**Asgrow 4403 is not considered root knot nematode resistant by Monsanto Company, however, some resistance to root knot nematode has been shown in both Missouri and Arkansas tests.


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		University of Missouri Extension Mississippi County mississippico@missouri.edu Updated 05/24/04