At Brickshire Golf Club, we monitor soil temperature as a critical tool for making informed turf management decisions. Whether it’s timing fertilizer applications, pre-emergent herbicides, disease prevention, or insect control, understanding how soil temperatures influence turfgrass growth and stress helps us optimize course conditions year-round.
Soil Temperature & Turfgrass Growth
\Both bentgrass greens and Bermudagrass fairways, tees, and roughs have temperature ranges that dictate their growth potential:
• Bentgrass thrives between 50–65°F soil temps, struggling when it gets too hot.
• Bermudagrass begins greening up around 60°F and reaches peak growth between 75–85°F.
By tracking these thresholds, we can better time aerification, fertilization, and other agronomic practices to keep playing surfaces strong throughout the season.
Currently, our five-day average soil temperature is 59.2°F, meaning Bermudagrass is on the verge of greening up. This is an important transition period where we carefully manage inputs to support strong growth while minimizing weed competition and disease risk.
Timing Disease Prevention
Several common turf diseases are directly tied to soil temperature. We monitor these thresholds to apply fungicides preventively rather than reactively:
• Fairy Ring: Appears around 55–60°F
• Spring Dead Spot: Infection occurs in fall when soil temps drop to 50–65°F
• Dollar Spot: Thrives in the 60–75°F range
• Brown Patch: Develops in humid conditions at 65–80°F
• Pythium Blight: A major summer concern when soil temps hit 70–80°F
Preventative fungicide applications at the right time reduce the risk of outbreaks and improve long-term turf health.
Pre-Emergent Herbicide Timing
Weed germination is also driven by soil temperature, making precise application timing essential for controlling unwanted turf invaders:
• Crabgrass: Begins germinating when soil temps hit 55°F
• Goosegrass: Emerges around 60–65°F
• Nutsedge: Appears at 65–70°F
• Poa Annua: Germinates in fall when soil temps drop below 70°F
Applying pre-emergent at the right time ensures the best weed control, reducing competition and maintaining smooth, uniform playing conditions.
Insect Activity & Soil Temperature
Soil temperatures also play a crucial role in predicting insect activity and damage. We use this data to time scouting and treatments for pests such as:
• Annual Bluegrass Weevil: Adults migrate onto greens at 50–55°F
• Black Cutworms & Sod Webworms: Become active when soil temps exceed 60°F
• Grubs (Japanese Beetle, Masked Chafer, etc.): Move toward the surface and feed aggressively between 55–65°F
• Fall Armyworms: Peak activity occurs at 65–85°F
• Nematodes: Thrive in 50°F+ soils, with highest damage occurring in 70–85°F conditions
By tracking these temperature windows, we can proactively treat pests before they cause significant turf damage.
Soil Moisture & Temperature Influence Turf Conditions
Soil moisture plays a critical role in soil temperature fluctuations. Wet soils warm and cool more slowly, while dry soils experience greater temperature swings. This impacts:
✔ Pre-emergent herbicide performance—Dry soils can reduce effectiveness.
✔ Fungicide efficacy—Many soil-borne diseases thrive in warm, wet conditions.
✔ Root growth—Excess moisture can lead to shallow rooting and plant stress.
By managing soil moisture effectively, we can fine-tune our turf care practices to ensure the best possible conditions for playability and turf health.
Why Soil Temperature & Moisture Monitoring Matter at Brickshire
Using real-time data on soil temperature and moisture allows us to:
✔ Apply nutrients and fertilizers when turf can use them efficiently.
✔ Optimize fungicide applications to prevent disease outbreaks.
✔ Time pre-emergents for maximum weed control.
✔ Detect insect activity before major turf damage occurs.
✔ Predict Bermudagrass green-up and summer stress periods.
We use manual soil probes to track soil temps daily, ensuring we make data-driven decisions that improve turf health and playing conditions.
Final Thoughts
Soil temperature is one of the most powerful tools in golf course management, influencing everything from disease outbreaks to weed control and insect activity. At Brickshire, we use this data to stay ahead of challenges and provide optimal playing conditions throughout the season.
If you’re ever curious about how we use science and data to maintain the course, feel free to ask! We’re always happy to share insights into the behind-the-scenes work that keeps Brickshire in top shape