Hello Summer!

Many of you have seen the current condition of our 8th fairway. We don't have a mystery disease attacking the fairway. The brown areas are the result of localized dry spot, a condition I wrote about in this blog back in August, 2015.

LDS on 8 fairway.

This condition was triggered by an electrical surge (lightning) in the irrigation control system. That surge destroyed a surge protector in the control satellite for the 8th hole. With no power to the controller, the hole doesn't get watered. We didn't discover the problem for several days. By then, with high temps and wind, soil moisture became critical and the bentgrass started browning out. This condition is exacerbated by the compacted and overturned soils from our recent renovation. I expect most of the damaged areas to recover with the return of more moderate weather.

Weidenmann deep-tine aerifier loosening up the 7th fairway.

We are currently in the middle of round two for deep-tining all of our fairways this year. We will continue with this practice until the soil compaction is alleviated and the soil structure is where we want it. See diagram for a better visual: deep-tine heave action

Always fun when you pickup a hitchhiker!

In addition, we added a wetting agent program to our fairway maintenance program this year. These products are suppose to minimize LDS outbreaks. Needless to say, I am somewhat disappointed with the results. On the other hand, this incident may show just how much soil work we have ahead of us.


This was the scene west of the 12th green 10 days ago. A three inch feeder pipe pulled out of the isolation valve causing quite a mess. The fix required applying joint restraints on both sides of the valve. We are hoping this won't be a reoccurring situation at other green sites.

3 inch irrigation pipe separated from the isolation valve at 12 green.

The native prairie plantings on the golf course are looking FABULOUS! Thank you to all golfers who are abiding by the "no entrance" rule. We appreciate your cooperation as do all the pollinators!
Pollinators love Keller GC!!!

Bumble Bee on Monarda (Bee Balm)

Bumble Bee on Oxeye (Early Sunflower)

16 tee surrounds.

Foot Print Follies

As populations of the Minnesota State bird begin to bulk up, now is a good time for the annual reminder regarding mosquito sprays. Please stand on a cart path or in deep rough when applying bug spray to your lower extremities. Certain ingredients in these sprays are toxic to short cut playing surfaces, e.g., greens, tees, and fairways.

Not a pretty sight but completely avoidable.

Another issue involving feet belongs to the golfer dedicated to putting practice. Often times you will see golfers performing repetition drills on the practice green standing in one spot for extended periods of time. The spikes and soles of their golf shoes combined with summer heat can cause undue stress on grass plants cut at a 1/10th of an inch.

Keller practice green, June 2016

There is a way to prevent this damage as demonstrated below by PGA Touring Pro Ryo Ishikawa.

Stand on a towel when your feet don't move for extended periods of time.

Catching Up

The month of May is always a busy month for golf course maintenance in the northern climates. Optimum temperatures along with timely rain usually cause an explosion of growth on our grassed playing surfaces. Our rough mower is usually playing catch-up all month, even when we add an additional mower to the process.

To counter this excessive growth, we use Plant Growth Regulators (PGRs) on greens, tees and fairways. These products cause the plant to slow its top growth and put that energy into roots and lateral growth. This makes for a healthier bentgrass plant and much reduced clippings on the fairways.

The particular PGR we use favors bentgrass while putting the hurt on annual bluegrass (poa annua). We have a substantial population of  'poa' in our playing surfaces that established during grow-in. From an agronomic point of view, it is in our best interests to limit the spread of this weed and, over time, reduce the populations.



The yellow grass on one of our tee surfaces is PGR stunted poa annua.

This spring, we upgraded our Toro 300 gallon sprayer with a GPS computer controller and a higher capacity pump. The golf industry is a little late to the party as the Ag Industry has used GPS technology for many years. How does GPS control improve spray applications on the golf course?

In simplified terms, the GPS controller mounted on the sprayer uses satellites orbiting the Earth to determine its exact (sub-meter accuracy) location on the ground. The margins of the fairways to be sprayed are entered into the computer. This allows the controller to determine what to spray and what not to spray. The sprayer operator simply drives over fairways back and forth and the controller turns the individual boom nozzles on and off as the fairway margins are crossed.

This system saves 10-15% product by eliminating overlaps and over sprays into the rough. In addition, the sprayer can now spray at 8-9 mph, twice as fast as the old system! Isn't technology great?

Asst. Superintendent Brett Wenzel at the wheel of the newly upgraded Toro 5700 sprayer.

Nozzles can operate in single or dual mode depending on demand call from the computer.

 

GPS computer screen shows what has been sprayed (white) and what is unsprayed (green).

                           

 

 

 

 

 

2015 Recap

Keller GC is a busy place and 2015 was no exception. In addition to 32,000 golfing rounds, a variety of visitors descended upon the property to learn about our environmental programming. I know some of you reading this have witnessed a long string of golf cars traversing about the course and wondered, "what's going on?" Below are a few of the groups that visited.

The "2015 Clean Water Tour" was organized by the Ramsey Conservation District (RCD). This tour included RCD staff, state legislators, county commissioners and other agency officials. This stop was the shoreline restoration on the 15th hole.

This large tour of 50 participants was the "Exceptional LEAP Tour" (Landscape Ecology Awards Program) organized by the Ramsey Washington Metro Watershed District. Most participants were Ramsey County residents with more than a few Master Gardeners thrown in for good measure. It was by far and away our most popular and well-received tour to date.

 

 

 

Bill Bartodjiez and Simba Blood of the RWMWD speaking to the LEAP tour.

 

 

Last fall we hosted a biodiversity class from the University of Minnesota.

One of our resident red-tail hawks on the lookout for dinner. Our 26 acres of restored habitat on the property are home to a HUGE population of rodents. This would explain the increased raptor traffic we have witnessed in the past year.

The underside of a piece of sod from the edge of a fairway. Note the white healthy roots emerging from that aerification hole in the soil. Oxygen is the key to healthy roots and healthy turfgrass. Ongoing aerification is full speed ahead in 2016.

Food For Thought

This is a repost of an article written by golf course architect Jim Urbina - The 5 Myths About Sand Bunkers. He says we no longer understand their true purpose. What do you think?

1) Bunkers are there to penalize golfers
Nothing could be further from the truth. The great old-time architects said a hazard isn’t just for punishment but to make the game more interesting. Golfers take bunkers personally: Those of us in the design business see them in the exact opposite way. Robert Hunter wrote, “Without hazards, golf would be a dull sport.”
2) You should be able to advance the ball from a bunker
Why? Sometimes golf, like life, isn’t fair. The original bunkers were totally natural, which meant sometimes it was impossible to move the ball forward from them. We’ve since made our own rules and now demand the ability to hit out of a bunker all the way to the green. But that wasn’t always the original purpose.
3) Maintaining them is important
We spend too much time and money maintaining bunkers. Due to expensive sands and labor costs, what should be among the cheapest parts of a course to maintain are the most expensive. They’re hazards, not gardens, and don’t need to be beautiful let alone neat and tidy.
4) They should not be in the middle of a fairway
If you hit a great shot down the middle and it finds a bunker then it wasn’t a great shot. A hazard is often placed for strategy, and one in the fairway is telling you that’s not the best place for hitting to the green. The game requires thought and skill, and sometimes the right play isn’t the obvious one. Same with bunker placement.
5) What you see is what you get
C.B. Macdonald said it can take years to discover and appreciate the hidden qualities of a bunker. Take the time to study the bunker—where it is, how it’s shaped and looks—over and over again. A good bunker makes you think and, as all the greats said, makes a course more interesting.

Walkers Rejoice!

What a fall we've had! The weather has been phenomenal up to the middle of November and then it started raining and raining and raining. Needless to say, there will be plenty of moisture in the ground going into winter freeze up.

We have several projects underway that began after we closed for the season on November 8. The walking path from the 13th black/blue tee to the green is being restored. As you may recall, a large section of the path was washed out by the heavy rains we experienced during construction and grow-in and the path has been closed since we re-opened. Our contractor, Urban Companies, hauled and placed many loads of fill on the steep, wooded site. The sub-base beneath the path is now restored. Asphalt repairs will most likely have to wait until next spring at which point the path will be open.



Initial stages of collapse.



 Skid loader using the plywood path used to protect the turf, irrigation system
 and native plant restoration along the woodland edge.

Work site is very steep, requiring a careful equipment operator and some
manual labor.

Temporary erosion control blankets in place.



Path subgrade restored.

Our second project underway is the expansion of our drainage infiltration basin located east of the second hole. More than 50% of surface-drained water from the golf course ends up here. After re-opening the golf course and experiencing several heavy, torrential rain events, it was obvious that we needed to increase the capacity of this drainage area. The basin would fill up, resulting in the drainage system backing up onto the golf course and flooding certain holes.

We applied for and received a cost-share grant of $37,000 from the Ramsey Washington Metro Watershed District for this project. This grant will cover 75% of the project cost with Ramsey County and the City of Maplewood picking up the remaining amount. I will post additional photos as the project wraps up in early December, providing the snow stays away.



This is the site to the east of the second hole after tree clearing was completed.
Most of the removed trees were Siberian Elm, an invasive tree of little ecological
value. At some point we will replant with oaks and hackberry.

The fill generated from this dig is to be dumped and graded out on the back end
of the driving range. The disturbed basin area and surrounds will be seeded to
short grass prairie and short sedge meadow species.

Dog Days of Summer

Staff is currently working on rectifying drainage issues post-renovation. Many of our drainage basins stay wet for days after a substantial rain event (we are again experiencing numerous heavy rain events this summer). We are excavating the problematic basins and backfilling with sand to assist with lateral, subsurface water movement. We will be adding additional tile lines and drains to the 16th fairway to improve the wet conditions, especially along the right side. During construction, a dump truck buried itself in that area, requiring multiple vehicles to extract it. Needless to say, there is a great deal of water moving beneath the surface in that area.

Drilling holes in a solid basin standpipe prior to wrapping with a geotextile fabric and backfilling with sand.

Approximately four holes of rough remain to be treated for broadleaf weeds. That operation will resume when the weather cools down. Our bentgrass fairways do contain a fair population of a broadleaf weed known as plantain. It is fairly easy to remove but we will wait until this fall to avoid damaging the bentgrass or any seedlings emerging in seeded areas with a herbicide.




Typical plantain currently found in our fairways.

 



As the weather cools, we will begin sodding some of our more problematic areas in the collars surrounding the greens. We will use sod from our nursery area that is cut at collar height. First we have to get the localized dry spot under control that currently plagues our nursery turf.

 

 

Some areas on 18 collar to be sodded in the near future.

Nursery turf  showing LDS (Localized Dry Spot).

   

Orange-colored areas indicate areas of LDS and highly compacted soils. We have been spraying a water infiltration product this season, but its effectiveness is no longer satisfactory with the onset of warm summer temperatures.

LDS is quite prevalent in our fairways right now. It is caused by soil particles and/or organic matter becoming hydrophobic and actually repelling water. Soil compaction definitely contributes to this condition and we have plenty of that. As temperatures begin to cool in the fall, aggressive aerification will begin. Hopefully, by then, we will have acquired a new deep-tine aerifier capable of creating 8.5 inch holes and shattering the soil profile at the same time.