GREENKEEPER BLOG

GreenKeeper Q: A New Way to Measure Putting Green Performance

While GreenKeeper Q looks fun to use—and it is—inside its clear shell is a robotic measurement platform that represents a major departure in putting green performance measurement. For decades, golf course superintendents have largely measured greens performance by...

Your Putting Greens Have Their Own Growth Pattern. Here’s How We Can Learn It.

In the last article of our Growth Series, we examined how putting green growth responded to changing weather. Heavy rainfall produced a modest increase in clipping volume, while the first significant cold front of autumn caused a much larger reduction. The results...

What’s Normal for Putting Green Organic Matter—and Is Lower Always Better?

In the first article of this series, we explored how much surface organic matter could realistically change under a typical cultivation and topdressing program. One of the more interesting findings was that the same management program could increase surface organic...

What Happens to Putting Green Growth When the Weather Changes Fast?

In the last article in this series, I argued that a thermometer is often a better biological clock than a calendar. Growing degree days help explain why 14 calendar days in July can represent a very different amount of biological time than 14 days in November. That...

Fall Wetting Agent Timing Matters for Winter Preparation

Fall weather can make wetting agent scheduling deceptively difficult. As air temperatures cool—especially nighttime temperatures—growing degree days accumulate more slowly and microbial degradation of wetting agents slows. That means an application that may have...

How Much Can Surface Organic Matter Change in a Year?

Scheduling cultivation and topdressing is always a tricky and sometimes controversal task. These practices are disruptive to players, costly, and tough on turf equipment. How much cultivation is really required? What's the right amount of sand topdressing for a...

A Thermometer Is a Better Clock Than a Calendar

In the first article of the GreenKeeper Growth Series, we used nearly 500,000 clipping-volume measurements to examine how much putting greens actually grow. One of the clearest environmental signals associated with that growth was temperature. This week, we are taking...

A Very Strong El Niño Is Building. What Should Turf Managers Expect?

El Niño is strengthening quickly, and the months ahead could bring unusual weather patterns around the world. The US National Oceanic and Atmospheric Association now gives greater than a 90% chance that the 2026–27 El Niño becomes very strong during the Northern...

How Much Does a Putting Green Actually Grow?

This launches the GreenKeeper Growth Series: an ongoing look at what we’ve learned from 500,000 clipping volume observations. Over the coming weeks, we’ll use this dataset to explore how putting greens grow, how factors like weather, fertility and PGRs influence...

When 60% Regulation Still isn’t Enough

Summer Created a Misleading Growth Surge It has been a hot, humid summer across much of the U.S., and one of the most common questions we’ve received is some version of: “Why is my PGR program not working anymore?” The evidence is usually sitting in the mower baskets....
Smart Irrigation Strategies to Save Water

Smart Irrigation Strategies to Save Water

Water conservation is a top priority in the golf industry, as superintendents seek innovative ways to maintain high-quality turf while reducing overall irrigation. It is an active area of research and development at GreenKeeper, too. Advances in technology now allow...

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Target Pests and Save with GreenKeeper CIS

Target Pests and Save with GreenKeeper CIS

Turfgrass sprayer systems with GPS guidance can do more than reduce over-spray. These high tech platforms can be used to precisely target specific pests on your course or fields. The mapping software within GreenKeeper CIS makes it easy for users to map pest...

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Shade Management is Growth Management

Shade Management is Growth Management

Turf growing under shade stress is difficult to manage. Most grass species evolved in sunny growing environments. That means shorter day lengths and lower sun elevations during the fall can quickly lead to problems. The cause is simple, really. Energy in (sunlight) is...

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Grow-in Guidance: Tools to Track Overseeding Progress

Grow-in Guidance: Tools to Track Overseeding Progress

The process of seeding newly renovated turf areas or overseeding dormant bermudagrass can be stressful. Golf course and sports fields operators need these surface back in-play quickly. Turf managers are tasked with several decisions regarding seed variety and pricing,...

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Mad-Tiller Disease

Mad-Tiller Disease

Bacterial etiolation or "Mad-Tiller" disease is a very frustrating growth disorder that has perplexed many turfgrass managers and researchers. While the Kerns and Vargas labs have independently shown the rapid leaf growth rate is most likely the result of bacterial...

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