1998 Soybean Variety Trials Reaction to Pests and Herbicides Table 74. Reaction of Maturity Group IV Early Soybeans to Pests and Herbicides. 1 Variety Brand Disease reaction2,3 Herbicide reaction7 Virus SMU/BPMV Phytophthora root rot4 Cyst nematode5 Frogeye leafspot4 Stem canker4,6 R2 R4 R7 R10 R3 R14 Rating Score AP 4880 Agripro R M -- -- R S S MS R 1.1 T A4341 Asgrow R -- -- -- -- S S MR R 1.1 T A4604 Asgrow R -- -- -- -- -- -- S R-S(R) 1.5 T DK4860 Delta King R -- -- -- S S MS S R-S (S) 3.3 -- X9240RR Delta King MR -- R -- -- -- -- S R-S (S) 3.3 T DP3478 Deltapine R -- -- -- R S S S R 1.0 T HBK 4600 Hornbeck MR -- R -- -- MR R S R-VS(VS) 4.3 T HBK 4755 Hornbeck R M M -- S -- -- S R 1.3 T HY 4540 HyPerformer R M -- -- S R R S R-S (S) 3.7 T S46-44 NK R -- -- -- S MR R S R 1.1 T TS4792 Terra R -- -- -- -- -- -- MS R 1.0 T TV4479 Terral R -- -- -- -- R R MS R-S (M) 3.1 T TV4664 Terral R R -- -- -- MR MR S R-S (R) 1.7 T Stressland Public R R -- -- S S S I R 1.1 -- TN4-86 Public I -- -- S S R R S R 1.1 T TN4-94 Public MR -- -- -- -- MR MR S R-S (R) 1.9 T 1All are released varieties. 2R = Resistant, M = Mixture (Resistant and Susceptible type reaction may be segregating or seed mixture); MR = Moderately Resistant; MS = Moderately Susceptible; S = Susceptible; VS = Very Susceptible; I = Intermediate (variation in response has been observed); and T = Tolerant. 3The hydroponic technique used in this trial measures major gene resistance. Some varieties that are rated susceptible may have a high degree of field tolerance to Phytophthora root rot. Some varieties in this test are known not to have a major gene for Phytophthora resistance, but were rated resistant. This is believed to be an expression field tolerance, (due to the use of a low inoculum potential). 4Ratings as made by plant pathologists at Mississippi State University. 5Nematode reactions as reported by R. D. Riggs, Plant Pathologist, University of Arkansas. 6"Score" gives an average rating of 40 plants stuck with a toothpick of stem canker inoculum. "Rating" is a scale or level of tolerance based on the score of the plants toothpicked: VS = 4.6 - 5.0; S = 2.0 - 4.5; MS = 1.5 - 1.9; MR = 1.2 - 1.4; R = 1.0 - 1.1. Some lines or varieties exhibited a range of reactions to stem canker. These findings are expressed as ranges in the table (i.e., R-VS). In these ranges, letters in parentheses highlight a variety s predominant reaction. For example, (R) -VS means the variety ranged from resistant to very susceptible in its response; however, the predominant response was resistant. Varieties or lines that exhibited such a range were mixes or were still segregating. 7Reaction to hydroponic screening to metribuzin; T=tolerant, S=susceptible. Table 75. Reaction of Maturity Group IV Late Soybeans to Pests and Herbicides. Variety Brand Disease reaction1,2 Herbicide reaction6 Virus SMU/BPMV Phytophthora root rot3 Cyst nematode4 Frogeye leafspot3 Stem canker3,5 R2 R4 R7 R10 R3 R14 Rating Score A4922 Asgrow R -- -- -- -- R R MS R-S (R) 2.6 T DP3478 Deltapine -- -- -- -- R S S S R 1.0 T DPX 8S49 (E)7 Deltapine MR -- R -- -- -- -- MR R 1.2 T Dixie 478 Dixie R -- -- -- -- S S MS R 2.1 -- DG3495 Dyna-Gro I -- -- -- R S S S R 1.2 T FFR 495 Elite R -- 4 -- -- -- -- MR R 1.0 T Genesis 9482 Genesis -- -- -- -- -- -- -- -- R-S (R) -- T HBK 49 Hornbeck MR -- -- R -- S S I R 1.0 T HBK 4890 Hornbeck R M -- -- -- -- -- MR R 1.2 T HBK 5149 Hornbeck R R R -- -- -- -- I R 1.1 T HBK X9749 (E) 7 Hornbeck R -- -- -- -- MR MS R R 1.8 T 9482 Pioneer R M -- -- -- S MS I R-S (R) 1.6 T 9492 Pioneer R -- R -- -- -- -- I R-S (M) 2.8 T 9511 Pioneer R -- -- -- -- S S S R 1.0 T RVS 490 Riverside I M -- -- R S S I R 1.2 T TV4770 Terral MR -- -- -- -- R MR S R 1.1 T TV 4975 Terral R R -- -- -- S S MR R 1.0 -- KS 4895 Public R S -- -- S MS MS MR R 1.0 T Manokin Public MR -- -- -- R R S MR R 1.2 T 1R = Resistant, M = Mixture (Resistant and Susceptible type reaction may be segregating or seed mixture); MR = Moderately Resistant; MS = Moderately Susceptible; S = Susceptible; VS = Very Susceptible; I = Intermediate (variation in response has been observed); and T = Tolerant. 2The hydroponic technique used in this trial measures major gene resistance. Some varieties that are rated susceptible may have a high degree of field tolerance to Phytophthora root rot. Some varieties in this test are known not to have a major gene for Phytophthora resistance, but were rated resistant. This is believed to be an expression field tolerance, (due to the use of a low inoculum potential). 3Ratings as made by plant pathologists at Mississippi State University. 4Nematode reactions as reported by R. D. Riggs, Plant Pathologist, University of Arkansas. 5"Score" gives an average rating of 40 plants stuck with a toothpick of stem canker inoculum. "Rating" is a scale or level of tolerance based on the score of the plants toothpicked: MS = 1.5 - 1.9; MR = 1.2 - 1.4; R = 1.0 - 1.1. Some lines or varieties exhibited a range of reactions to stem canker. These findings are expressed as ranges in the table (i.e., R-VS). In these ranges, letters in parentheses highlight a variety's predominant reaction. For example, (R) -VS means the variety ranged from resistant to very susceptible in its response; however, the predominant response was resistant. Varieties or lines that exhibited such a range were mixes or were still segregating. 6Reaction to hydroponic screening to metribuzin; T=tolerant, S=susceptible. 7(E) = Experimental. Table 76. Reaction of Maturity Group V Early Soybeans to Pests and Herbicides. Variety Brand Disease reaction1,2 Herbicide reaction6 Virus SMU/BPMV Phytophthora root rot3 Cyst nematode4 Frogeye leafspot3 Stem canker3,5 R2 R4 R7 R10 R3 R14 Rating Score AP 527STS Agripro R -- -- -- -- MS MS R R 1.3 -- A5547 Asgrow R M -- -- R MR R MR R-S (R) 1.9 T A5704 Asgrow MR -- -- -- -- -- -- R R-S (R) 2.1 T 55 Buckshot MR -- -- S S MR MR I MR 1.5 T DG500A (E)7 DEKALB R -- -- -- -- -- -- S MS 4.0 T DG500B (E)7 DEKALB R -- -- -- -- -- -- MR R 1.3 T Delta King 5850 Delta King MR -- -- S R MR MR MR R-S (R) 1.7 T DK X9450RR Delta King MR -- -- -- -- -- -- MR R 1.1 T DP 3519S Deltapine R M -- -- M R MR R R-S (R) 1.8 T DP 5354 Deltapine R -- -- -- -- -- -- MR R-S (R) 1.7 T DPX 8S56 (E)7 Deltapine MR -- -- -- -- -- -- MS R 1.2 T Genesis 9511 Genesis R -- -- -- -- -- -- MR R-S (R) 1.8 -- H5050 Hartz MR -- -- -- -- MS MS MR R 1.1 T HY 574 HyPerformer MR R -- R R MR S MS R-S (R) 1.5 T S57-11 NK R R -- -- R R R I R 1.2 T X9851 (E)7 NK R -- -- -- -- -- -- MR R-S (R) 1.8 T X9855 (E)7 NK R -- -- -- -- -- -- R R-S (R) 1.8 T 9511 Pioneer -- -- -- -- -- S S S R 1.0 T 95B33 Pioneer MR -- R -- -- -- -- R R-S 1.9 -- RVS 77 Riverside MR -- -- -- -- S S I R 1.1 T RVS 520 Riverside MS -- R -- -- S MS R R 1.0 T RVS 529I Riverside MR M -- -- R S MS MS R 1.0 T RVS 549 Riverside MR R -- R R S S MS MS 1.7 T Robin-5 Riverside MR R -- -- R R S I R-S 2.5 T TV5495 Terral -- -- -- -- -- R S S R 1.0 T Delsoy 5500 Public R M -- --