Green Kyllinga Found in North Brunswick

Uh-oh! We now have green kyllinga at Hort Farm No. 2 in North Brunswick. Joe Clark found it in a field that was sprayed with glyphosate. Most everything died but the kyllinga! Carrie Mansue has made some collections of kyllinga and will be doing some herbicide tests in the greenhouse this winter to determine which materials have the best activity on the this very difficult to control weed.

Keep a lookout for this weed, if left alone it will spread by rhizomes. Carrie has visited lawns that were essentially overrun by kyllinga. Once kyllinga achieves that level of dominance, control is nearly impossible without complete renovation. See previous post on the topic.

Live patch in foreground is kyllinga that survived a spray with glyphosate. Yellowed plants to left are yellow nutsedge.

Battling Green and False Kyllinga in New Jersey Turfs

We are seeing and hearing about increasing problems with green and false kyllinga; both are very troublesome invasive weed species that have moved northward into New Jersey. Green kyllinga and false green kyllinga are very similar in appearance, and both are referred to as green kyllinga. Green kyllinga is very difficult to control once large mats form.

These weeds thrive under mowing and are prolific in areas that are poorly drained or frequently wet. If you do not have [Read more…]

Crabgrass Emerging

Back on May 24, I posted about my observation of crabgrass emerging in areas that had very thin turf cover and very high levels of crabgrass seed in the soil. Crabgrass is now emerging from areas with healthier turf and good density (and has not received a preemergence herbicide application). Recent and forecast rains are likely to [Read more…]

Anthracnose Active on Annual Bluegrass

Anthracnose disease was active as early as April 16 this year and has intensified in recent weeks on our low N fertilization plots.

Active anthracnose disease on annual bluegrass (Poa annua) plots in North Brunswick NJ, 16 April 2013.

One of our experiments has the objective of determining whether anthracnose can be managed with curative sprays if [Read more…]

Dollar Spot Activity Flares Overnight

The high humidity of last night (28-29 May) caused dollar spot disease to escalate. Until last night, symptoms on unprotected susceptible turf were minor.

The cottony fungal growth (mycelia) of dollar spot, which is easily seen at early morning hours during wet humid weather.

Susceptible grasses grown under low N fertility will typically have [Read more…]

Slow Green-up of Kentucky Bluegrass

There are numerous elite varieties of Kentucky bluegrass (Compact Types) that have excellent tolerance of leaf spot, summer patch, and stripe smut diseases. Many varieties produce a very attractive, dense, compact (low growing) turf with dark green color during the summer.

Some elite varieties of Kentucky bluegrass exhibit slow spring green-up (plot in center foreground).

[Read more…]

Slow Growth This Spring

Slow growth of grasses has been a common complaint this spring. There are many factors that can cause this but cool dry weather has been a major factor this year.

Slow growth of turf can be due to many factors but cool dry weather has been important this spring.

[Read more…]

Update on ProFACT

Turf response to a uneven application of N fertilizer.

As the start of the 2013 growing season draws near, I thought an update on the Professional Fertilizer Applicator Certification and Training (ProFACT) program would be useful. Be advised that all professionals need to be certified or trained to apply fertilizer to turf in NJ. Additionally, all certified and trained professionals need to renew their certificate for 2013 before applying fertilizer in 2013. Recall the that N & P fertilizer cannot be applied to turf (lawns, park, sports fields, etc.) in NJ before March 1st.

There were 1,634 professionals that received [Read more…]

Rutgers Turf Students Compete in GCSAA Turf Bowl in San Diego, CA

Photo of Rutgers Turf Bowl Competition TeamTurf Bowl Competition:

Three teams of undergraduate students (four students to a team – including Tyler Astor, Greg Benz, Michael Chikos, Ryan Daddio, Nicholas Delmar, Kyle Genova, Kenneth MacNish, Mike Monzon, Jianlong Sun [Jason], Yuanshuo Qu [Henry], Lingcheng Zeng [Aaron], Lorabeth West,) from the Rutgers Turf Club competed in the 2013 Turf Bowl Competition at the International Golf Course Superintendents Association of America Conference and Trade Show in San Diego, CA on Thursday, February 7, 2013. [Read more…]

Tall Fescue Varieties for Sports Turf

Hope your winter is going well.

We recently published on the web a fact sheet update on Tall Fescue Varieties for New Jersey Sports Fields.

This fact sheet discusses the characteristics of traffic tolerance, turfgrass quality, and susceptibility to brown patch disease (caused by Rhizoctonia solani). Traffic tolerant varieties are more persistent under the combined stresses of wear and compaction, which are very common on sports turfs. The variety recommendations in this fact sheet are based on research conducted at Rutgers University on the 2006 National Turfgrass Evaluation Program (NTEP) Tall Fescue Test. Data from other locations was also used for these recommendations. [Read more…]