2019 Soybean Maturity Group IV (M.G. 4.7–4.9) RR2X Variety Response to Iron Deficiency Chlorosis

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Publication Number: P3469

Brand	Variety	IDC Tolerance Score¹					Avg. IDC Tolerance Score
Don Mario	47X01	4	4	4	3	1	3
AGS	GS47X19	4	5	5	4	2	4
USG	7489XTS	4	6	6	4	3	4
Terral	REV 4927X	4	5	5	3	3	4
Dyna-Gro	S48XT56	3	5	5	4	2	4
MorSoy	MS 4846 RXT STS	5	6	6	4	2	4
Asgrow	AG48X9	4	5	5	4	2	4
NK	S47-Y9X	5	6	6	4	2	4
Great Heart	GT-4979X	5	6	6	4	2	4
Great Heart	GT-4802X	4	5	5	4	1	4
Local Seed	LSX4894X	4	5	5	4	2	4
Delta Grow	48X45	5	5	5	4	3	5
Delta Grow	49X15	5	6	6	5	4	5
AgriGold	G4815RX	5	6	6	4	3	5
LG Seeds	C4845RX	5	6	6	5	3	5
LG Seeds	LGS4899RX	5	6	6	4	3	5
AGS	GS49X19	6	7	7	5	3	5
USG	7470XTS	5	6	6	5	4	5
Pioneer	P48A60X	5	6	6	4	4	5
NK	S49-F5X	5	5	5	5	3	5
Dyna-Gro	S49XT70	6	6	6	5	3	5
Mission Seed	A4950X	5	6	6	4	2	5
Local Seed	LS4798X	5	6	6	4	3	5
Delta Grow	47X95 STS	6	6	6	5	3	5
Don Mario	49J3X	6	7	7	5	4	5
Progeny	P 4799 RXS	6	6	6	5	3	5
Progeny	P 4816 RX	5	6	6	5	3	5
Dyna-Gro	S47XT20	5	6	6	4	3	5
Credenz	CZ 4979X	6	6	6	5	4	5
Great Heart	GT-4764XS	5	6	6	5	2	5
Delta Grow	48X05	5	6	6	4	3	5
LG Seeds	LGS4931RX	6	7	7	6	5	6
USG	7496XTS	7	7	7	6	6	6
Local Seed	LS4889XS	6	7	7	6	4	6
Dyna-Gro	S49XT39	7	7	7	6	5	6
Asgrow	AG47X9	6	7	7	5	4	6
Asgrow	AG49X9	6	7	7	6	5	6
Progeny	P 4821 RX	6	7	7	6	5	6
Terral	REV 4940X	6	7	7	6	6	6
Great Heart	GT-4833XS	5	7	7	5	4	6
Progeny	P 4851 RX	7	8	8	7	6	7
Progeny	P 4999 RX	7	7	7	6	6	7
Credenz	CZ 4869X	7	7	7	7	6	7

¹Tolerance scores were assigned on a scale of 1 to 10 with 1 being completely tolerant and 10 being completely susceptible.

These data are intended to serve as an additional resource for variety selection specifically for soils with a history of problems associated with iron deficiency chlorosis. Consult other sources such as results from official variety trials and demonstration programs for detailed information regarding variety performance.

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The information given here is for educational purposes only. References to commercial products, trade names, or suppliers are made with the understanding that no endorsement is implied and that no discrimination against other products or suppliers is intended.

Publication 3469 (POD-06-20)

By Trent Irby, PhD, Associate Extension Professor, Plant and Soil Sciences; Alanna Scholtes, Extension Associate, Plant and Soil Sciences; Garrett Oswalt, Extension Associate, Plant and Soil Sciences; Charlie Stokes, PhD, Area Extension Agent IV, Monroe County; and Brad Burgess, Director, Variety Testing.

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Produced by Agricultural Communications.

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Extension Service of Mississippi State University, cooperating with U.S. Department of Agriculture. Published in furtherance of Acts of Congress, May 8 and June 30, 1914. GARY B. JACKSON, Director

Department: Plant and Soil Sciences

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