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Key Grow More Experience Trial Take-aways from the Eastern and Northern Midwest

December 6, 2020
Waterhemp growing in between the rows of soybeans at the Brooklyn, WI, Grow MoreTM Experience site in July, 2020.

Waterhemp growing in between the rows of soybeans at the Brooklyn, WI, Grow MoreTM Experience site in July, 2020.

Below are 3 key take-aways gleaned from our trials at eastern and northern Midwest Grow More™ Experience sites this year.

Trials Showcase the Product Impact 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. Then later in the season, Saltro proved to be a powerful line of defense against defoliation, pod loss and yield impact.
  • Heavy rain events after preemergence herbicide applications caused a significant difference in herbicide crop safety with stand loss and stunting occurring with many products. At the DeWitt, MI, Grow More Experience site, we saw how pre-emergence sprays of Verdict® and SureStart® II herbicides inhibited emergence of corn due to the lack of and/or a less effective safener. At the Sheridan, IN, Grow More Experience site, we saw a stark difference between Boundary® 6.5 EC and Fierce® XLT herbicides on soybeans.

Weather and Formulations Reveal Differences in Weed Control

  • Midwest growers know that weather always plays a hand in early season weed control. Some parts of IL reported little rain after preemergence herbicide applications while parts of IN had too much, causing products to not hold. MI and WI reported having mostly good activation as long as you were timely with your spray schedule. Either way, spells with too much or too little rain right after preemergence herbicide applications put herbicide programs to the test. Whichever weather you experienced, we found at our Grow More Experience site that trials with both preemergence and post-emergence herbicide programs were clean, while 1-pass preemergence programs could not get fully activated and resulted in loss later in the season. Here are some herbicide programs we tested in our trials that offered season-long protection from tough weeds like waterhemp, Palmer amaranth, common cocklebur and morningglory:
    1. Corn: Foundation rate of Acuron® herbicide followed by Halex® GT.
    2. Soybeans: Boundary 6.5 EC herbicide followed by the flexible and effective Prefix® herbicide + glyphosate.
  • A product’s formulation does make a difference when seeking diverse weed control, as we learned in our bare-ground, active ingredient shoot-out trials. The active ingredient S-metolachlor (found in the following Syngenta products: Acuron, Boundary 6.5 EC, Dual II Magnum®, Halex GT and Prefix herbicides, among others) brought much more grass, broadleaf and waterhemp weed control than the straight generic option, metolachlor.

Diseases and Insects Make Their Presence Known

  • Early-season disease pressure was fairly light, but as we headed into the heat of summer diseases like southern rust, gray leaf spot and Northern corn leaf blight in corn and frogeye leaf spot and Septoria 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® Neo fungicide provided broad control of a number of diseases in both corn and soybeans.
  • There were a fair share of insects detected in the Midwest. Dectes stem borers remained active and populations continue to increase annually at our Rend Lake, IL, Grow More Experience site.

More Detailed Trial Reports from the Season:

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Product performance assumes disease presence. Performance assessments are based upon results or analysis of public information, field observations and/or Syngenta evaluations.

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