Important week to scout for disease activity in the Maritimes
Hot and humid conditions will sweep across Atlantic Canada this week. An indicator I use to assess disease potential during the summer months is dew point. High dew points are an indication of high air temperatures and high relative humidity. Dew points in excess of 20 degrees will feel uncomfortable. Dew points above 25 degrees will feel oppressive. Unfortunately, these high dew points are also an indication of widespread disease activity.
Common diseases such as dollar spot and anthracnose will be very active this week. As will some other not so common diseases in the Maritimes such as brown patch, Bipolaris leaf spot, and perhaps even Pythium blight. Bentgrass ‘puffy syndrome’ is not a disease but will also likely occur!
Preventative strategies and timely scouting are especially important this week. As temperatures climb, the recuperative ability of the turf will slow. This is when our putting greens, tees, and fairways are most at risk. It’s when the environment is more favorable for pathogen growth than it is for the growth of the plant.
Mirage™ Stressgard®. (DMI), Exteris™ Stressgard®. (SDHI + QoI), and our new fungicide Dedicate™ Stressgard® (DMI + QoI) are all broad-spectrum materials that control multiple disease targets. These fungicides also bring Stressgard Technology to the forefront during a very hot stressful week.
Keep in mind that the 2020 Bayer Relief Pak includes Mirage Stressgard and Exteris Stressgard. This program runs through August 7th, 2020. This rebate provides 10% off Exteris Stressgard if you purchase two cases of Mirage Stressgard and three cases of Exteris Stressgard. This rebate is only available to golf courses and sod farms in Atlantic Canada. Click here for more information.
Another tool for your toolbox this week is incorporating Signature XTRA™ Stressgard® into your program. This chemistry is widely used to control Pythium blight and anthracnose. However, in recent years, many superintendents have incorporated this product in their program to help combat abiotic stress and to promote plant health.
Stressgard contributes to chlorophyll health and stability leading to improved photosynthesis, stronger plants, and healthier turf. Here’s the proof:
A 2019 research trial by Dr. Bingru Huang at Rutgers University investigated the influence of Signature XTRA™ Stressgard® and other plant health products including phosphites.
• Chlorophyll related enzymes: Chlorophyll is built and destroyed in a cyclical pattern. Individual components of this process can be influenced by various abiotic stresses (heat, drought, traffic etc.). We can measure the enzymes associated with chlorophyll production and degradation.
• Chlorophyll content: Chlorophyll contributes to the machinery in the plant that carries out photosynthesis and build energy reserves. Direct measurements of chlorophyll are most indicative of the health and photosynthetic capabilities of a plant.
• Cell membrane stability: Measured via electrolyte leakage, membrane stability is the hallmark of stress response in plant cells and is widely used as a measure of plant stress tolerance.
Significantly lower chlorophyll degrading enzymes and lower electrolyte leakage in Stressgard treated plants.
For more information about disease and insect control strategies contact your local Territory Sales Manager.
ALWAYS READ AND FOLLOW LABEL DIRECTIONS.
Bayer, the Bayer Cross, Mirage Stressgard, Exteris Stressgard, Signature XTRA Stressgard and Dedicate Stressgard are trademarks of Bayer.