FieldTalk

Archives

  • Glyphosate & Ammonium Sulphate

    July 2, 2021 Jean-François Foley

    It is sometimes difficult to control certain weeds, even with glyphosate. What can explain the low effectiveness of glyphosate? 

    Often the cause is too late application. Two problematic weeds at this level are lambsquarters and velvetleaf. 

            

    REASON: These 2 weeds have a high calcium content, which may...

  • Corn Water Use - Western Canada

    July 1, 2021 Sara Meidlinger
    Filed Under:
    Corn, Crop Management

    Hot and dry conditions seem to be continuing across the Prairies this summer, it is important to understand how corn uses water throughout the season.

  • Darksided Cutworm

    June 30, 2021 Jean-François Foley

    As seen during visits in June 2021.

    This insect was reported in eastern Quebec last year and was detected in several new areas this spring, including Nicolet.  The adult moth was able to lay its eggs last fall, and the mild winter may have contributed to the survival of the eggs.  Young larvae attack the foliage of several plants...

  • Rootless Corn Syndrome

    June 30, 2021 Jean-François Foley
    Filed Under:
    Crop Management

    This syndrome occurs in young corn plants and is attributed to limited or simply absent development of the nodal roots. 

    Various factors are involved: 

    1. Shallow planting

    Seed MUST be sown to a MINIMUM depth of 1.5 inches to ensure that nodal roots grow 3 4 inch below the soil surface. Excessive or absent moisture will cause the death...

  • Jun15Tue

    Staging Corn Plants

    June 15, 2021 Sara Meidlinger

    Staging corn plants correctly is essential for understanding and assessing crop development, and when make herbicide, fungicide, and fertility applications and recommendations.  It is important to know the difference between each method as different companies use different methods to make application recommendations.

    Before discussing the...

  • Corn growth stages are divided into two – vegetative growth and reproductive growth. Vegetative growth begins with emergence and ends with tassel emergence. Reproductive growth begins quickly after tassel emergence and ends with physiological maturity. This newsletter will focus on the six stages of reproductive growth grain fill (R1...

  • Jun1Tue

    Tar Spot

    June 1, 2021 Matt Chapple
    By now many have heard the crop losses associated with the corn disease Tar Spot. The complex disease is made up of two fungal pathogens: Phyllachora maydis and Monographella maydis. 
  • May31Mon

    Soybean Population x Fungicide

    May 31, 2021 Matt Chapple
    The purpose of this project was to demonstrate varietal response to population and genetic response to fungicide application and to determine if ROI increases when populations are increased and a fungicide is applied.
  • May28Fri

    Corn Rootworm Monitoring

    May 28, 2021 Matt Chapple

    Bt resistant CRW has resulted in measurable yield loss and has triggered an urgent call for farmers to implement management strategies regarding the utilization of Bt proteins. 

  • May28Fri

    Hybrid x Population x Management Response Trial

    May 28, 2021 Neil McGregor
    Corn yield is effected at different stages throughout the growing season. Plant population is determined at planting, then ears per plant, kernels per row per ear, kernel length and kernel weight are determined throughout the growing season based on growing conditions and management.