Table 23. 2020 MG-4L Liberty Link Disease Tests

Table 23. Yields and disease ratings of 12 Maturity Group IV Late (4.6-4.9) Liberty Link soybean varieties in 3 County Standard Tests and in small plot trials at one Research and Education Center and two on-farm locations in Tennessee during 2020

Summary from County Tests			Summary from Small Plot Research
		Avg.	Research & Education Center at Milan (RECM)				On-farm Location in Jackson (JAX1)					On-farm Location-Behind Wheat (JAX2)
		Yield	RECM – YLD		Frogeye	Target	JAX – YLD		Frogeye	Target	SDS	JAX2 – YLD		Frogeye	Other Diseases
MS	Variety	(bu/ac)	*Treated	Non-treated	leaf spot	Spot	*Treated	Non-treated	leaf spot	Spot		*Treated	Non-treated	leaf spot
A	Dyna-Gro S49EN79	63.2	45.2	42.3	LOW	LOW	42.4	41.8	LOW	MOD	LOW	37.7	34.2	LOW	CLB
AB	Local Seed ZS4694E3S	61.3	51.8	46.3	MOD	LOW	53.2	50.7	LOW	MOD	LOW	46.7	39.5	LOW
AB	GoSoy 463E20S	60.8	49.3	42.7	MOD	LOW	–	–	–	–	–	–	–	–
AB	GoSoy 481E19	60.8	52.1	44.2	LOW	LOW	48.0	44.9	LOW	LOW	HIGH	45.0	32.9	LOW	CLB
AB	USG 7471ET	60.5	45.8	44.7	LOW	LOW	52.9	46.8	LOW	MOD	LOW	52.8	39.0	LOW	CLB
AB	Stine 48EB20	60.4	48.2	45.8	LOW	LOW	51.1	42.9	LOW	LOW	–	39.5	31.3	LOW
AB	USG 7480ET	58.9	51.1	45.8	LOW	LOW	52.6	46.6	LOW	LOW	MOD	–	–	–	CLB
AB	GoSoy 491E19S	58.7	49.2	40.2	LOW	LOW	46.4	43.9	LOW	MOD	HIGH	43.5	35.2	LOW	CLB
AB	NK S48-E3S	58.4	48.5	43.1	LOW	LOW	54.2	52.0	MOD	LOW	HIGH	39.6	34.4	MOD	CLB
AB	NK S46-E3S	57.3	47.9	42.3	MOD	LOW	45.3	44.2	LOW	MOD	–	–	–	–	CLB
AB	GoSoy 473E20	55.9	50.5	46.1	LOW	LOW	48.2	45.9	LOW	LOW	LOW	41.7	34.6	LOW
B	Stine 46EB23	52.5	50.6	43.2	LOW	LOW	50.5	52.4	LOW	LOW	–	–	–	–	CLB
	Average	59.1	49.2	43.9			49.5	46.6				43.3	35.1

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.   *Treated plots sprayed with Quadris TOP SBX @ 7 oz./Acre + 0.25% Induce @ R3 growth stage. RECM varieties planted June 3, sprayed Aug 12, and harvested Nov 3. JAX1 varieties planted June 2, sprayed Aug 10, and harvested Oct 22. JAX2 varieties planted after wheat June 26, sprayed aug 25, and harvested Nov 6.   LOW, MOD, and HIGH is a relative ranking of disease severity at each location. Other diseases noted: CLB=Cercospora leaf blight;  ‘ – ‘ indicate variety was not tested at that location or data was not collected Disease ratings at RECM: Frogeye leaf spot ranged from 0 – 5% with an average of 2%; Target spot ranged from 0 – 0.8% with an average of 0.1%. Disease ratings at JAX1: Frogeye leaf spot ranged from 0 – 4% with an average of 0.6%; Target spot ranged from 0 – 6% with an average of 2.7%; Sudden Death Syndrome (SDS) index ranged from 1 – 23 with an average of 10 disease index. Disease ratings at JAX2 (after wheat): Frogeye leaf spot ranged from 0 – 5% with an average of 2%; Target spot was not observed; there was soybean rust present but it was not rated.   Disease ratings & yield data compiled by Dr. Heather Kelly & Alyson Horner from replicated plots at the Research and Education Center at Milan, the West Tennessee Research and Education Center, and on-farm location in Jackson. County data provided by Ryan Blair, Ext. Area Specialist, and the extension agents.