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Insights from IA and MO Grow More Experience Trials

December 6, 2020
Waterhemp growing in between the rows of soybeans in the untreated check at the Yarmouth, IA, Grow More Experience site.

Waterhemp growing in between the rows of soybeans in the untreated check at the Yarmouth, IA, Grow MoreTM Experience site.

Below are 3 insights from our IA and MO Grow More Experience site trials this year:

Trials Reveal the Impact of Products on Crop Safety

  • Saltro® fungicide seed treatment showcased its early-season crop safety versus the competitive standard. Greater crop safety allowed those soybeans to emerge and grow with more crop vigor, leading to better stands and quicker canopy development.
  • Midwest growers know that weather always plays a hand in early-season weed control. Spells with too much rain followed by weeks without rainfall put herbicide programs to the test. The Columbia, MO, Grow More Experience site conducted a trial that compared how preemergence herbicide programs stand up against volatile weather conditions. Heavy rain events after preemergence herbicide applications caused a significant difference in herbicide crop safety with stand loss and stunting occurring with many products.

2-Pass Herbicide Programs Protect Against Tough Weeds

  • Our trials across the Midwest also revealed that 2-pass herbicide programs with multiple effective sites of action in an overlapping residual system brought the best results for weed control all season. To learn more about the importance of overlapping residuals, watch agronomist Dean Grossnickle discuss how to achieve control all season long:

  • In addition to herbicide-resistant weeds like waterhemp, fall panicum, common cocklebur, and morrningglory were all thriving this year, and 2-pass programs were by far the cleanest options at our trials. We found these herbicide programs offered great performance in their respective crops:
    • Corn: Foundation rate of Acuron® herbicide followed by Halex® GT.
    • Soybeans: Boundary® 6.5 EC herbicide followed by Prefix® herbicide + glyphosate. These treatments canopied 3-5 days before several competitive options.

Disease Threats and Solutions in 2020

  • Early-season disease pressure was fairly light, but late-season diseases like southern rust, gray leaf spot and Northern corn leaf blight in corn and cercospora blight and frogeye leaf spot in soybeans quickly became issues.
    • Trivapro® fungicide once again set the standard for southern rust control in corn with increased efficacy, consistency and longevity compared to newer fungicide options on the market.
    • Miravis® Top fungicide helped our soybeans fend off frogeye leaf spot and other diseases.
    • Miravis® Neo fungicide offered broad control over a number of diseases in both corn and soybeans.

More Detailed Trial Reports from the Season:

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