Last updated 3/19/2007
NOT FOR PUBLICATION WITHOUT PERMISSION
B-18082
2006 Annual Report
Purdue University Turfgrass Science Program
Department of Agronomy
915 W State St
Purdue University
West Lafayette IN 47907-2054
765-494-8039
In this report, you may see pesticide use in research reports that do not conform to the pesticide label. These uses are not provided as recommendations. By law, it is the responsibility of the pesticide applicator, to follow current label directions for the specific pesticide being used. No endorsement is intended for products mentioned, nor criticism of products not mentioned. The authors, Purdue University, and the Midwest Regional Turf Foundation assume no liability from misuse of pesticide applications detailed in this report. The Agricultural Experiment Station of Purdue University is an equal action/equal opportunity institution.
Understanding the Data
Most of the data presented in this report was subjected to statistical analysis. Statistical procedures are a combination of logic and arithmetic that allow us to interpret information gathered from experiments. We most frequently use a Least Significant Difference Test to explain our test data.
Fisher’s Least Significant Difference (LSD) Test is a statistical procedure that determines if the difference found between two treatments is due to the treatment or if the difference is simply due to random chance. For each set of data, a value termed the LSD is calculated at a chosen level of significance. If the difference between two treatment means is greater than this calculated value then it is said to be a ‘significant difference’ or a difference not due to random chance. The level of significance that we use most often is 0.05 (LSD0.05). In other words, this difference will occur 95% of the time these treatments are compared. If ‘NS’ is reported at the bottom of a column of means, then no significant difference was found among the means in this group of data at a probability = 0.05.
Table of Contents:
| PDFSupporters of the Purdue University Turf Program in 2006 | |
Cultivar and Species Evaluations |
|
| Olsen Seed Perennial Ryegrass Cultivar Trial | |
| Causes of Differential Growth among Zoysiagrass Cultivars | |
| Freeze tolerance of zoysiagrass cultivars - Pilot Study | |
| Specifications on building a cold stress simulator | |
| Freeze tolerance of zoysiagrass cultivars | |
| Physiological Basis for Differences in Zoysiagrass Freeze Tolerance | |
Management Studies |
|
| Evaluation of Various Sand Topdressing Practices on Three Creeping Bentgrass Cultivars Maintained Under Two Fertility Levels on a Research Golf Green | |
| Mowing height impacts establishment rate of zoysiagrass cultivars | |
| Annual bluegrass seedhead suppression in two contrasting golf turf areas as affected by Proxy, a Proxy + Primo Maxx tank-mix and Embark Lite applications | |
| Survey of Home Lawn Soil Phosphorus Levels in Tippecanoe County Indiana | |
| Evaluation of various urea-based nitrogen sources for their effect on creeping bentgrass and Kentucky bluegrass color | |
| Evaluation of various foliarly applied fertilizer sources for golf course putting greens | |
| Evaluation of various soil surfactants for creeping bentgrass sand-based putting green management | |
| Evaluation of various soil surfactants for creeping bentgrass summer fairway management | |
| Annual Bluegrass Control in a Creeping Bentgrass Fairway Using Cutless 50W, Primo MAXX 1EC and Various Tank-mix Combinations | |
| Above Ground Responses of Three Cool-Season Lawn Species to Varying Annual Nitrogen Rates and Application Timings | |
| Evaluation of Traditional and Novel Species for Reducing Sediment Loss in North Central Indiana | |
Integrated Pest Management |
|
| Effect of season-long fungicide programs on survival of Poa trivialis | |
| Effects of trinexapac ethyl and fungicides on growth of creeping bentgrass | |
| Effect of Certainty and Velocity on cultivars of Poa trivialis | |
| Effect of Velocity and Certainty on short-term control of Poa trivialis | |
| Velocity and Certainty Combined With Overseeding Creeping Bentgrass for Conversion on Fairways | |
| Creeping Bentgrass Control with Fall Applications of Mesotrione or Certainty | |
| 2006 Crabgrass Control: Preemergence Herbicides Applied Prior to Emergence or Postemergence Herbicides Applied at 1-2 Tiller Stage | |
| 2006 Crabgrass Control: Preemergence Herbicides Applied Prior to Emergence or Postemergence Herbicides Applied at 1-2 Tiller Stage | |
| Control of 1- to 2- Leaf Crabgrass | |
| NA06B2A001 Spotlight herbicide demonstration in university COI trials | |
| 2006 Crabgrass Control: Preemergence Herbicides Applied Prior to Emergence or Postemergence Herbicides Applied at 1-2 Tiller Stage | |
| Broadleaf weed control with fall applications of Certainty in cool season turf | |
| Broadleaf weed control with late fall applications of Certainty herbicide | |
| Tall fescue control in Kentucky bluegrass with Certainty herbicide | |
| Poa trivialis control in creeping bentgrass with Certainty herbicide | |
| Poa trivialis control in Kentucky Bluegrass with Certainty herbicide | |
| Control of 1- to 2- Leaf Crabgrass | |
| Timing and Rate of Mesotrione Applications for Fall Bentgrass Control | |
| Safety of Mesotrione 4SC on Kentucky Bluegrass Cultivars | |
| Highlights of Mesotrione Research at Purdue | |
| Mestrione 4SC Safety when Applied at Seeding and Newly-Emerged Fine Fescue | |
| Mestrione 4SC Safety when Applied at Seeding and Newly-Emerged Kentucky Bluegrass | |
| Mesotrione 4SC safety to perennial ryegrass when applied to seeding and newly emerged turf | |
| Mesotrione 4SC Safety to Turf-type Tall Fescue when Applied to Seeding and Newly Emerged Turf | |
| Application of Provaunt and Talstar for Black Cutworm Curative Control in Creeping Bentgrass | |
| Post-Application Irrigation and the Curative Efficacy of Allectus, Merit and Arena on Billbug Larvae in Kentucky Bluegrass Turf | |
Curative Efficacy of Provaunt, Talstar and Conserve Against Sod Webworm Larvae in Creeping Bentgrasss Turf |
|
| Application Timing and Efficacy of Imidacloprid Against Masked Chafer Larvae in Turfgrass |
Send corrections, suggestions, and comments to biehlj@purdue.edu
Department of Agronomy, Turf Program
915 W. State Street, West Lafayette, IN 47907
765-494-8039
Send corrections, suggestions, and comments to biehlj@purdue.edu