The Tri-State Disease Tour
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osted by Alabama Cooperative Extension, University of Florida/Institute of Food and Agriculture Sciences Extension and the University of Georgia Cooperative Extension, the tri-state peanut disease tour was a chance to see the latest technology available to protect peanuts from both foliar and soilborne pathogens. Attendees learned about plot trials and about the year’s top disease problems in growers’ fields. The UF portion of the tour was presented virtually. At that time, peanuts had been planted in the small-plot trials about 100 days ago. The plots were in STATEMENT OF OWNERSHIP MANAGEMENT AND CIRCULATION 1. Publication Title: Peanut Grower 2. Publication Number: 1042-9379 3. Filing Date: October 2021 4. Issue Frequency: Jan – July and Nov 5. Number of Issues: 8x/year 6. Annual Subscription Price: Free to qualified subscribers 7&8. Mailing Address of Known Office/Headquarters: 875 W. Poplar Ave., Ste. 23, Box 305, Collierville, TN 38017 Contact Person: David Boyd (901-626-1730) 9. Publisher: Lia Guthrie, 7100 Black Bart Trail, Redwood Valley, CA 95470 Editor: Amanda Huber, 875 W. Poplar Ave., Ste. 23, Box 305, Collierville, TN 38017 10. Owners: Cornelia Guthrie, 7100 Black Bart Trail, Redwood Valley, CA 95470; Dr. David Scott Guthrie, Sr., 7100 Black Bart Trail, Redwood Valley, CA 95470; Morris Ike Lamensdorf, 17 S. Third St., Rolling Fork, MS 39159; Mary Jane Lamensdorf, 17 S. Third St., Rolling Fork, MS 39159 11. Known Bondholders, Mortgagees and Other Security Holders Owning/Holding 1% or More of Total Amount of Bonds, Mortgages or Other Securities: None 12. Tax Status: Has Not Changed During Preceding 12 Months 14. Issue Date for Circulation Data Below: July 2021 15.a. Total Number of Copies (net press run): (Average No. Copies each Issue During Preceding 12 Months – 9,476) (No. Copies of Single Issue Published Nearest to Filing Date – 9,649) 15.b.(1) Outside County Paid/Requested Mail Subscriptions: (Average No. Copies Each Issue During Preceding 12 Months – 5,326) (No. Copies of Single Issue Nearest to Filing Date – 5,105) 15.c. Total Paid and/or Requested Circulation: (Average No. Copies Each Issue During Preceding 12 Months – 5,326) (No. Copies of Single Issue Nearest to Filing Date – 5,105) 15.d.(1) Outside County Nonrequested Copies: (Average No. Copies Each Issue During Preceding 12 Months – 3,993) (No. Copies of Single Issue Published Nearest to Filing Date – 4,204) 15.d.(4) Nonrequested Copies Distributed Outside the Mail: (Average No. Copies Each Issue During Preceding 12 Months - 15) (No. Copies of Single Issue Published Nearest to Filing Date - 125) 15.e. Total Nonrequested Distribution: (Average No. Copies Each Issue During Preceding 12 Months – 4,008) (No Copies of Single Issue Published Nearest to Filing Date – 4,329) 15.f. Total Distribution: (Average No. Copies Each Issue During Preceding 12 Months - 9,334) (No Copies of Single Issue Published Nearest to Filing Date – 9,434) 15.g. Copies Not Distributed: (Average No. Copies Each Issue During Preceding 12 Months - 142) (No. Copies of Single Issue Published Nearest to Filing Date - 215) 15.h. Total: (Average No. copies Each Issue During Preceding 12 Months – 9,476) (No. Copies of Single Issue Published Nearest to Filing Date – 9,649) 15.i. Percent Paid and/or Requested Circulation: (Average No. Copies Each Issue During Preceding 12 Months – 57.1%) (No. Copies of Single Issue Published Nearest to Filing Date – 54.1%) 18. I certify that all information furnished above is true and complete. Lia Guthrie, Publisher
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THE PEANUT GROWER • NOVEMBER 2021
30-inch rows and were 30 feet long. UF Extension disease specialist Nick Dufault says they have been doing trials for six years at the North Florida Research and Education Center in Live Oak. “For most of that time, we had the trial in the same field. This year, we moved it to a field that was in corn for the past three years. We are just now starting to see peanut disease. “Typically, we would have significant leaf spot pressure at 50 to 70 days after planting. It would ramp up to where we had nearly complete defoliation and just sticks by the end of the season,” he says. It was a visual representation of how important rotation is in disease management, Dufault says. Additionally, he says they have found that using Peanut Rx as a guide is a good way to keep disease pressure to a minimum compared to chlorothalonil only. Key points from research and Extension on soilborne disease and nematodes are: Tools to fight white mold. The best way to prevent white mold is to be on a good crop rotation and have a solid fungicide spray program. Be mindful when scouting fields that white mold can show few above-ground signs. It is important to dig up plants to fully assess what is going on with the crop during the season. Rhizoctonia. It was a wet season in many areas, with cooler temperatures that brought more Rhizoctonia pressure. This fungus can severely affect the limb crop in peanuts and result in reduced yields. Seed treatments, crop rotation and good fungicide spray programs can help with less-than-ideal planting and growing conditions to limit Rhizoctonia pressure. Root-knot and lesion nematodes. Consider sending soil samples to
PHOTO COURTESY OF MIKE RIFFLE, VALENT U.S.A.
Rotation, Peanut Rx and fungicides are a good way to start planning for disease in 2022.
Extension staff digs peanuts for field demonstrations at the tri-state disease tour.
a diagnostic lab at least every few years to evaluate nematode pressure across your acres. Effective diagnosis of nematodes takes more than a visual inspection. Ideally, sample the top 8 inches of soil with a probe, and label each sample. Early fall is the best time to sample for nematodes. Hunt Sanders, field market development specialist at Valent U.S.A., attended the tour as well. “These pressures aren’t unique to 2021. I expect we’ll continue to see white mold, Rhizoctonia and nematodes as part of planting conversations in 2022,” he says. “Looking ahead with fungicide plans is a solid step. There are a lot of resources out there when it comes to planning, including Peanut Rx, which accounts for variety, timing, tillage, rotation, disease pressure and more. “For disease management, I continue to recommend Excalia fungicide for fields facing white mold, Rhizoctonia, Sclerotinia blight and leaf spot.” For more information about preventing disease using Peanut Rx tool, go to peanutrx.org and for more on Excalia, go to Valent.com/Excalia. PG PEANUTGROWER.COM
