Table 9. 2019 MG-3 Roundup Ready Disease Tests

Table 9. Yields and disease ratings of 10 Maturity Group III Roundup Ready soybean varieties in 9 County Standard Tests and in small plot trials at one Research and Education Center and one on-farm location in Tennessee during 2019.

Summary from County Tests			Summary from Small Plot Research
		.	Research and Education Center at Milan (RECM)					On-farm Location in Jackson (JAX)
			RECM – YLD					JAX – YLD
MS	Variety	Avg Yield (bu/ac)	*Treated	Non-treated	Frogeye leaf spot	Target Spot	Other Diseases	*Treated	Non-treated	Frogeye leaf spot	Target Spot
A	Asgrow 37X9***	71.5	56.9	54.8	MOD	LOW		53.5	45.7	MOD	LOW
AB	Local Seed 3976	69.8	50.9	49.9	HIGH	LOW	SDS	59.1	55.8	HIGH	LOW
ABC	Croplan 3950	69.2	53.2	47.6	HIGH	LOW	SDS	54.2	48.3	HIGH	LOW
ABCD	NK S39-G2X	67.8	53.9	51.5	MOD	HIGH		52.3	44.2	MOD	MOD
ABCD	AgriGold G3722RX**	67.2	51.1	49.2	LOW	MOD		55.9	45.7	LOW	MOD
BCDE	Asgrow 39X7	65.4	52.9	50.2	MOD	HIGH		51.9	42.4	MOD	HIGH
CDE	AgriGold G3850RX	64.5	49.4	52.1	LOW	MOD		51.8	48.4	MOD	MOD
DE	Asgrow 36X6	64.5	50.6	49.1	MOD	HIGH		53.4	46.3	HIGH	HIGH
DE	Asgrow 38X8	63.8	57.6	51.0	LOW	HIGH		53.1	43.3	LOW	MOD
E	Warren Seed BG 3701 RR2X	61.6	43.4	47.4	LOW	MOD		53.1	45.9	LOW	MOD
	Average	66.5	52.0	50.3				53.8	46.6

YLD= Avg. Yield @ 13% moisture

MS= Varieties that have any MS letter in common are not statistically different in yield at the 5% level of probability.

Varieties denoted with an asterisks (**) or (***) etc. were in the top performing group for consecutive years.

*Treated plots sprayed with Quadris TOP SBX @ 7 oz./Acre + 0.25% Induce @ R3 growth stage.

RECM varieties planted May 28, sprayed Aug 8, and harvested Oct 2.

JAX varieteis planted May 21, sprayed July 24, and harvested Sept. 24.

LOW, MOD, and HIGH is a relative ranking of disease severity at each location. Other diseases noted: SDS=Sudden Death Syndrome;

‘ – ‘ indicate variety was not tested at that location

Disease ratings at RECM: Frogeye leaf spot ranged from 0 – 15% with an average of 6%; Target spot ranged from 0 – 21% with an average of 8%.

Disease ratings at JAX: Frogeye leaf spot ranged from 0 – 4% with an average of 2%; Target spot ranged from 0 – 14% with an average of 4%;

Disease ratings & yield data compiled by Dr. Heather Kelly from replicated plots at the Research and Education Center at Milan and on-farm location in Jackson.

County data provided by Ryan Blair, Ext. Area Specialist, and the extension agents.