Growing degree day data helps predict annual bluegrass flowering

Research leads to models used to schedule PGR applications to suppress annual bluegrass seedhead production.

Verdure: Dollar spot and nitrogen, Part 1

A university and a golf course teamed up to determine whether increasing N fertilization reduces dollar spot severity on greens.

Controlling Poa annua with annual bluegrass weevil and PGRs

Can ABW, alone and in combination with PGR programs, be a viable tool to reduce annual bluegrass cover in creeping bentgrass fairways?

Effect of annual bluegrass weevil larval stage on insecticide efficacy

Researchers tested whether four ABW larvicides could be applied later than recommended, potentially allowing for fewer, better-timed applications.

Verdure: N, 15 ... Bingo!

Clemson University researchers investigated whether applying a soil surfactant increased bermudagrass N uptake and use efficiency.

Effects of core recycling vs. conventional aerification practices

How are plant and soil properties influenced when sand from aerification cores gets returned to a green?

Verdure: The Sting (nematode, that is)

Sting nematodes are known to have the lowest threshold levels of any nematode on turfgrass. But just how low?

Testing turfgrasses for lower-input fairways

Researchers evaluated the quality of five fairway turfgrasses maintained with and without nitrogen and fungicide applications.

New insights on take-all root rot

The various fungal species that cause this disease of warm-season turfgrasses were previously thought to be similar, but a closer look has revealed differences noteworthy for superintendents.

Is Poa annua really an annual species?

A series of experiments took a close look at Poa annua’s life cycle, a better understanding of which can help superintendents trying to eradicate or maintain it.

Natural alternatives for annual bluegrass control

Are there any truly viable nonchemical options for Poa annua control in high-value turf? Researchers put 11 alternative treatments to the test.

Humic fertilizer effects on soil, turf health

Using a sand-based putting green, researchers evaluated humic substances’ ability to enhance soil microbial activity and maintain turf quality with reduced nitrogen.

Weed control in minimal- and no-mow golf course roughs

To help superintendents eradicate weeds without injuring desirable plants, researchers evaluated 11 rough grasses for their tolerance to three postemergence herbicides.

Quantifying golf shoe effects on putting greens

Researchers tested various methods for detecting surface disruption based on shoe type and after just one day of play.

Managing lance nematodes in warm-season turfgrass

Lance nematodes are an elusive foe, difficult to diagnose and poorly controlled by current nematicides. A study aimed to refine thresholds and identify ideal extraction method and sampling time.

Analyzing pesticide environmental risk on golf courses

Using a sample of 22 golf courses, researchers quantified pesticide risk levels on various course components and explored the most effective strategies for reducing them.

Managing root-knot nematodes in warm-season turfgrass

A nematologist outlines the life cycle and behavior of these microscopic organisms, a new method for diagnosis, and current tools for control.

Nitrogen fertilizer costs and turfgrass response

Are some pricier nitrogen sources a better value in the long run? Researchers looked into the claim, measuring turf’s responses to 10 N sources and the cost to achieve such responses.

Turfgrass nutrition recommendations: SLAN vs. MLSN

Michigan State researchers compared greens fertilized according to the different philosophies to see whether one resulted in better turf quality.

Verdure: What to dew about dollar spot

A Penn State study looked at the influence of dew removal and mowing frequency on dollar spot control, testing the practices alone and in combination with fungicide use.