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Suppression of soybean diseases through the use of cover crops Darin Eastburn University of Illinois.

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Presentation on theme: "Suppression of soybean diseases through the use of cover crops Darin Eastburn University of Illinois."— Presentation transcript:

1 Suppression of soybean diseases through the use of cover crops Darin Eastburn University of Illinois

2 Collaborators Loretta Ortiz-Ribbing – U. of Wisconsin, River Falls Jason Bond – Southern Illinois University Joel Gruver – Western Illinois University Steve Ayres – Aryes Farms Brad Hunt – Hunt Farms Michael Plumber – Plumber Farms

3 Champaign- Urbana Macomb Carbondale

4 Cover Crops On-station (40 x 200 plots) Cereal rye White mustard Rape Canola Winter fallow On-farm (60 x 1000 plots) Cereal rye Rape Winter fallow

5 Rye

6 Rye

7 Soybeans in standing rye

8 Rape and Canola

9

10 Mustard Winterkilled

11 Mustard Winterkilled, replaced by weeds

12 Sample and data collection Cover crop biomass Soil samples Fall and spring SCN levels, DNA analysis, bioassay Soybean stand counts Soybean disease ratings Early season (V3), foliar and root Late season (R6), foliar and split stem Soybean yields

13 Q-PCR ASSAYS – UIUC, Fall (pre cover crop) PlotsBSR(pg/g)CT(pg/g)CR(pg/g)Fv(pg/g)Pso(Geq/g)SCN(pg/g) Rye No Ctr Rape , No Ctr Mustard , No Ctr Canola , No Ctr Fallow , No Ctr Rye No Ctr Rape , No Ctr Mustard ,977.3No Ctr Canola No Ctr Fallow , ,568,030.No Ctr Rye , No Ctr Rape , No Ctr Mustard , No Ctr Canola , No Ctr Fallow , No Ctr Rye No Ctr Rape , No Ctr Mustard , No Ctr Canola No Ctr Fallow , No Ctr

14 Q-PCR ASSAYS – Ayres Farm, Fall (pre cover crop) PlotsBSR(pg/g)CT(pg/g)CR(pg/g)Fv(pg/g)Pso(Geq/g)SCN(pg/g) Rye ,203.4No Ctr Rape No Ctr Fallow No Ctr Rye 22, , No Ctr Rape , No Ctr Fallow 21, , No Ctr Rye 35, ,877.8No Ctr Rape 33, No Ctr Fallow 31, ,413.1No Ctr Rye 41, No Ctr Rape ,848.No Ctr Fallow 41, , No Ctr

15 Brown Stem Rot severity at Ayres Farm

16 Soybean Stand Counts - UIUC

17 Fallow Plots - UIUC

18 ControlRhizoctonia

19 Rye Plots - UIUC

20 ControlRhizoctonia

21 SDS Ratings – UIUC


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