Turf Tips Archives
Lots of Colors in Spring Lawns
During spring green-up, lawns may reveal many variations in color, growth rate, and leaf width. This variation can be due to some of the following reasons: Species and cultivars: Perennial ryegrass is always the first of the desired cool-season grasses to green-up, followed by tall fescue and eventually Kentucky bluegrass (Fig. 1). Even within a species, […]
Winter damage in cool-season turf
I’ve gotten a number of calls on winter damage on lawns and other high mowed turf areas. Thankfully this is fairly rare in most winters throughout Indiana. Winterkill can be fairly complex resulting from desiccation with drying winds, freezing of the plant crown with quickly dropping temperatures after spring green up, and/or from direct cell […]
Turf 101: Spring Mowing
Though lawns in southern Indiana may have already been mowed a couple of times, mowing is just starting from Indianapolis north. Mowing is the most expensive and laborious maintenance practice on turf, but it also has the largest effect on long-term performance: It is better to mow too early rather than too late in the […]
Turf 101: Limit Spring Fertilization
Many different strategies exist on spring fertilization, but the one fact agreed upon by all turf specialists is to avoid applying heavy nitrogen (N) rates in March or April. Heavy rates would be anything greater than 0.75 lbs of quickly available N/1000 ft2, which causes excessive shoot growth and results in frequent mowing. Furthermore, excess […]
MSMA is a “stop sale” agreement, not a “stop use”
As a follow up to the Feb. 13 Turf Tip on the new restrictions on MSMA, the Indiana Office of the State Chemist indicates this is “stop sale agreement” and not a “stop use”. Therefore, you are free to use according to the label on the actual container, any MSMA that you have in storage […]
Professionals Only: Syngenta’s Tenacity receives federal label for residential and sports turf
After much delay, Tenacity has finally received its federal label for residential and sports turf. That’s the good news, but the bad news is that state labeling is still ongoing and it won’t be for sale likely until Fall 2009 or early 2010. Experimental product is available on a limited basis from your Syngenta rep […]
Seed now to get a jump on crabgrass germination
Though spring is not our favorite time to seed, it’s important to seed as soon as possible to allow the cool-season grasses to germinate prior to crabgrass. Crabgrass germinations can occur at soil surface temperatures as low as 50F, but germination is slow and these plants (hopefully) may be killed by an ensuing frost. Most […]
Tracking Growing Degree Days for Applications? Indiana now in expanded GDD Tracker
By popular demand, we have joined with Michigan State to include Indiana sites in GDD Tracker (http://www.gddtracker.net/). This site allows you to quickly and easily check your current growing degree day accumulation. It also uses a number of models to help with decisions on timing of growth regulators for Poa annua seedheads, preemergence herbicides for crabgrass, and […]
Professionals Only: Premergence herbicide strategies
As spring is closing in, we are fielding a number of questions; four major questions right now: Which preemergnce herbide to use? That one is pretty easy. We have only three active ingredients relatively easily available and they are dithiopyr, pendimethalin, and prodiamine. Our research shows that as long as they are applied at reasonable […]
MSMA still available but use is limited
Though MSMA is rarely used by professionals anymore in cool-season turf, it is an excellent postemergent crabgrass herbicide for zoysia and bermudagrass grown in the southern half of Indiana. It is especially useful during sprigging or seeding operations because it is safe on seedlings. Following is a brief summary of the current status and the […]
Purdue Team WINS the 2009 GCSAA TURF Quiz Bowl Competition!!!
Six teams traveled last week to the International Golf Industry Show in New Orleans, LA to compete in the 15th annual Golf Course Superintendents Association of America (GCSAA) Collegiate Turf Quiz Bowl. This competition consists of a 3.5 hour written examination that consists of the identification of seeds, turfgrasses, diseases, insects and weeds. In addition […]
Preemergence Yellow Nutsedge Control In Spring Seeded Tall Fescue With Tenacity, Dismiss and Echelon, 2007
Summary: This study showed that Dismiss and Echelon provided excellent preemergence yellow nutsedge control, but these herbicides should not be used in a tall fescue seedbed. Tenacity applied twice at 0.1 87 lb/A provided a level of yellow nutsedge control similar to Dismiss and Echelon. However, Tenacity works slowly and must be applied twice to […]
Yellow Nutsedge, The Scourge of Lawns and Landscapes in Nebraska
Yellow nutsedge (Cyperus esculentus) is a common, persistent and troublesome weed in lawns and landscapes in Nebraska. This is especially true from Kearney east into Iowa. Yellow nutsedge thrives in waterlogged soil and their presence often indicates that drainage is poor, irrigation frequency/quantity are excessive, or sprinklers/valves are damaged and leaking. Once this tenacious weed […]
Yellow nutsedge may be far off concern, but spring applications show promise
Yellow nutsedge is now one of the most common weeds in lawns, athletic fields and golf turf. Even though all textbooks say it thrives in wet areas, we see some of our worst yellow nutsedge infestations in dry years. Cultural controls will always help, but the standard herbicides are Basagran, SedgeHammer (formerly Manage), Certainty, and […]
Calculating the pounds of fertilizer to apply
There are literally thousands of fertilizers and fertilizer/pesticide combinations available to homeowners and professionals. Therefore, we can’t recommend how many pounds of a specific fertilizer to apply, but rather we must recommend fertilization rates in pounds of nitrogen per thousand square feet or lbs N/1000 sq ft. You can use our fertilizer calculator at www.agry.purdue.edu/turf/fertcalc/Fertilization%20calc.html […]
Choosing a Preemergence Herbicide
There are many, many formulations and combinations of preemergence herbicides available for the professional. Following are some suggestions for purchasing and using preemergence herbicides. Control from every preemergence herbicide can vary from year to year, or location to location. Therefore, you can’t judge the performance of a product or a specific rate of that product […]
Thank You to Everyone who Attended the Indiana Green Expo
On behalf of the Turf Program, Midwest Regional Turf Foundation (MRTF), Indiana Nursery and Landscape Association (INLA), and Indiana Flower Growers Association (IFGA), I’d like to thank everyone who helped with and/or attended the 2009 Indiana Green Expo on January 12-14 at the Indiana Convention Center in Indianapolis. This marks the third year of cooperation […]
Purdue Alumni and Friends Reception at the GCSAA in New Orleans
For those making the trip to New Orleans for the Golf Industry Show, the Purdue Alumni and Friends Reception will be held Thursday, February 5, 6:00 to 8:00 pm in the Bayoe Jean Lafitte room of the Embassy Suites, 315 Julia Street. It’s a great opportunity to catch up with your classmates and old friends. […]
Still time left to sign up for Indiana Green Expo to be held Jan 12-14!
The registration deadline is fast-approaching for the Indiana Green Expo and forms must be postmarked by Dec. 31, 2008. The Indiana Green Expo is the largest turf, ornamental, nursery, and landscape conference in Indiana and is jointly sponsored by the Midwest Regional Turf Foundation, Indiana Nursery and Landscape Association, and now the Indiana Flower Growers […]
How Late is Too Late to Control Dandelions and Other Weeds?
Even though the drought has limited some broadleaf weed applications this month, we are now in the prime season for broadleaf weed control. Actually there is plenty of time left for good control. Nebraska research reported in 2002 showed 2,4-D and/or dicamba were far more effective in controlling dandelions and Canada thistle when applied 1 […]