Abstract
Seedling diseases of soybean (Glycine max) can be common under cool and moist soil conditions and may be caused by a complex of pathogens in North Dakota. Managing these diseases can be difficult due to wide host ranges of the pathogens and lack of resistant cultivars. Field trials were conducted to evaluate the effects of three different fungicide seed treatments and an untreated control on soybean at six locations in 2003 and eight locations in 2004 in North Dakota, for a total of 14 environments. The fungicides evaluated were fludioxonil + mefenoxam (Warden RTA), azoxystrobin + metalaxyl (SoyGard), and Bacillus pumilus GB34 (Yield Shield). Significant (P ≤ 0.05) environment-seed treatment interactions were observed, indicating that environment played a role in when benefits from seed treatments were observed. At least one of the fungicide seed treatments provided significant protection against plant stand and yield losses compared with the untreated control in 4 of the 12 environments where plant stand was measured and 4 of the 14 environments where yield was measured. Root lesions were reduced significantly by at least one of the fungicide seed treatments compared with the untreated control in 5 of the 11 environments where root lesions were evaluated. Yield and economic benefits with fungicide seed treatments were observed more often in environments that had low soil temperatures at planting (<15°C) and moist soil conditions. Based on this research, fungicide seed treatments may be a viable option for soybean growers in North Dakota when planting into cool and moist soil conditions.
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Claims 6
Claim · model-written summary
Seed-treatment benefits varied significantly by environment.
- Taxon
- soybean
Glycine maxe1 - Treatment
- seed treatmente0
- Outcome
- environment-seed treatment interactionse0
- Value
- P ≤ 0.05e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant (P ≤ 0.05) environment-seed treatment interactions were observed”
e1“soybean (Glycine max)”
Claim · model-written summary
At least one treatment significantly protected soybean stand in four of twelve environments.
- Taxon
- soybeanGlycine maxe1
- Treatment
- fungicide seed treatmentse0
- Outcome
- plant stande0
- Direction
- protectione0
- Value
- 4 of the 12 environmentse0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At least one of the fungicide seed treatments provided significant protection against plant stand and yield losses compared with the untreated control in 4 of the 12 environments where plant stand was measured and 4 of the 14 environments where yield was measured”
e1“soybean (Glycine max)”
Claim · model-written summary
At least one treatment significantly protected soybean yield in four of fourteen environments.
- Taxon
- soybeanGlycine maxe1
- Treatment
- fungicide seed treatmentse0
- Outcome
- yield lossese0
- Direction
- protectione0
- Value
- 4 of the 14 environmentse0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At least one of the fungicide seed treatments provided significant protection against plant stand and yield losses compared with the untreated control in 4 of the 12 environments where plant stand was measured and 4 of the 14 environments where yield was measured”
e1“soybean (Glycine max)”
Claim · model-written summary
At least one treatment significantly reduced soybean root lesions in five of eleven environments.
- Taxon
- soybeanGlycine maxe1
- Treatment
- fungicide seed treatmentse0
- Outcome
- Root lesionse0
- Direction
- reducede0
- Value
- 5 of the 11 environmentse0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root lesions were reduced significantly by at least one of the fungicide seed treatments compared with the untreated control in 5 of the 11 environments where root lesions were evaluated”
e1“soybean (Glycine max)”
Claim · model-written summary
Yield and economic benefits occurred more often under cold, moist planting conditions.
- Taxon
- soybeanGlycine maxe1
- Treatment
- fungicide seed treatmentse0
- Outcome
- Yield and economic benefitse0
- Direction
- more oftene0
- Setting
- low soil temperatures at planting (<15°C) and moist soil conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and economic benefits with fungicide seed treatments were observed more often in environments that had low soil temperatures at planting (<15°C) and moist soil conditions”
e1“soybean (Glycine max)”
Claim · model-written summary
The authors suggest fungicide seed treatment when soybean is planted in cool, moist soil in North Dakota.
- Taxon
- soybeanGlycine maxe0
- Outcome
- fungicide seed treatments may be a viable optione0
- Qualifier
- cool and moist soil conditionse0
- Setting
- North Dakotae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fungicide seed treatments may be a viable option for soybean growers in North Dakota when planting into cool and moist soil conditions”
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