Playability with ET, Wetting Agents, and Slopes. Rodney V. Tocco Jr. Michigan State University
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1 Playability with ET, Wetting Agents, and Slopes Rodney V. Tocco Jr. Michigan State University
2 Research Objectives Plant Available Water (PAW) Water Conservation ET for an Irrigation Model Watering vs. Wetting Agent vs. Mowing 1x or 2x
3 Experimental Set-up & Design Hancock Turfgrass Research Center (HTRC) East Lansing, MI 3 x 2 x 2 Factorial 30, 60, 90% ET 1X, 2X Mowing Wetting Agent vs. Untreated Crenshaw Creeping Bentgrass (Native Soil) Mowed at & Rolled (Daily at first then less) MAWN Nine plots of Hunter PGP s (0.8 /hr) within a block
4 Data Collection Weekly (Same Day) Visual Quality, TDR, Green Speeds LDS, Dollar Spot, etc. (If applicable) Annually % Organic Matter, Microbial Population, Water Drop Penetration
5 Treatments 4 September 2010
6 Treatments 4 September 2010
7 Water Applied Stats For 30%, 60%, & 90% ET respectively: 4.43, 8.91, & Inches (June-Nov 2010) 6.08, 12.06, & Inches (May-Nov 2011)
8 Total Microbial Population (μg/g soil) Total Microbial Population Results (A) 33 * (A) 30.9 * 30% ET 60% ET (B) * 90% ET Daily ET Irrigation Replenishment *Statistically Different Factorial AOV with LSD of 0.05 (Data analyzed with ARM version 8.3.4, 2012)
9 Total Microbial Population (μg/g soil) Total Microbial Population Results * * Untreated Revolution (6fl oz/1000) *Statistically Different 31.2 Factorial AOV with LSD of 0.05 (Data analyzed with ARM version 8.3.4, 2012)
10 Water Drop Penetration Test
11 Faster penetration leads to less run-off
12
13 Seconds Water Drop Penetration Test Results 60 * * * Untreated Revolution 10 0 * Depth (cm) *Statistically Different Factorial AOV with LSD of 0.05 (Data analyzed with ARM version 8.3.4, 2012)
14 2011 Water Use & Playability Green Speeds (Inches) TDR (%VWC) Quality (1-10) 30% ET * (B) % ET * (A) % ET * (A) 7.9 *Statistically Different Factorial AOV with LSD of 0.05 (Data analyzed with ARM version 8.3.4, 2012)
15 2011 Water Use & Playability Green Speeds (Inches) TDR (%VWC) Quality (1-10) Untreated Revolution - 1 inch Flat surface native soil green 7.7 *Statistically Different Factorial AOV with LSD of 0.05 (Data analyzed with ARM version 8.3.4, 2012)
16 2010 & 2011 Watering, Mowing, and Wetting Agents Study Summary Green Speeds Higher w/ 2X Mow Dollar Spot Lower w/2x Mow Green Speeds and Quality no different with ET watering replenishment or wetting agents
17 Sloping Green & Wetting Agents
18 Sloping Green & Wetting Agents North slope ~ 15 long (a 7% incline)
19 Sloping Green & Wetting Agents Crown ~ 6 long
20 Sloping Green & Wetting Agents Mid-slope ~ 40 long (a 3% incline)
21 Sloping Green & Wetting Agents South flat~14 long (0% incline)
22 Sloping Green & Wetting Agents Data collection: LDS ratings from 4-locations Ratings: 1 = excellent 2 = very good 3 = good 4 = fair 5 = poor
23 Localized dry-spot ratings 10 total for the season North slope Crown Mid-slope South flat 100% sand 90:10 sand peat 10% 100% 50% :10 sand soil 10% 100% 40% ACA % 50% 10% Revolution 10% 50% 10% Check
24 Localized dry-spot ratings 10 total for the season North slope Crown Mid-slope South flat 100% sand 90:10 sand peat 10% 100% 50% :10 sand soil 10% 100% 40% ACA % 50% 10% Revolution 10% 50% 10% Check
25 Localized dry-spot ratings 10 total for the season North slope Crown Mid-slope South flat 100% sand 90:10 sand peat 10% 100% 50% :10 sand soil 10% 100% 40% ACA % 50% 10% Revolution 10% 50% 10% Check
26 Localized dry-spot ratings 10 total for the season North slope Crown Mid-slope South flat 100% sand 90:10 sand peat 10% 100% 50% :10 sand soil 10% 100% 40% ACA % 50% 10% Revolution 10% 50% 10% Check
27 Localized dry-spot ratings 10 total for the season North slope Crown Mid-slope South flat 100% sand 90:10 sand peat 10% 100% 50% :10 sand soil 10% 100% 40% ACA % 50% 10% Revolution 10% 50% 10% Check
28 Sand/Soil Revolution Control ACA 2787
29 Sand/Peat Revolution Control ACA 2787
30 Moisture = The Crucial Element Unknown Photographer Playability Dave Martin / Getty Images Golf Ball Acceptance
31 100% = 100% sand SS = 90% sand 10% soil SP = 90% sand 10% peat 100% SS SP SP SS 100% SP 100% SS SS SP 100%
32 Spectrum Technologies, Inc.
33 TDR readings (1.5 ) 14 total for the season North slope Crown Mid-slope South flat 100% sand 90:10 sand peat 90:10 sand soil 21% 50% 21% % 43% 7% ---- ACA 2787 Revolution % 14% % 14% 7% Check
34 TDR readings (1.5 ) 14 total for the season North slope Crown Mid-slope South flat 100% sand 90:10 sand peat 90:10 sand soil 21% 50% 21% % 43% 7% ---- ACA 2787 Revolution % 14% % 14% 7% Check
35 TDR readings (1.5 ) 14 total for the season North slope Crown Mid-slope South flat 100% sand 90:10 sand peat 90:10 sand soil 21% 50% 21% % 43% 7% ---- ACA 2787 Revolution % 14% % 14% 7% Check
36 TDR readings (1.5 ) 14 total for the season North slope Crown Mid-slope South flat 100% sand 90:10 sand peat 90:10 sand soil 21% 50% 21% % 43% 7% ---- ACA 2787 Revolution % 14% % 14% 7% Check
37 Sloping Green & Wetting Agents Conclusions Straight sand had the most LDS Sand/peat retained more moisture than our sand soil mix
38 Sloping Green & Wetting Agents Conclusions Wetting agents decreased localized dry spot on the high spots of the green after several applications Wetting agents increased soil moisture retention especially on high spots and slopes.
39 Sand/Peat Revolution Control ACA 2787
40 Acknowledgements Committee - Dr. Thom Nikolai - Dr. Kevin Frank - Dr. Kurt Steinke - Dr. Joseph Vargas - Dr. Bernard Zandstra HTRC Staff - Frank Roggenbuck - Mark Collins - Aaron Hathaway - Jeff Dunne - Undergrad Employees
41 Thank you for your time. Questions?
42 Citations Throssel, Clark Management factors affecting putting green speed. Masters thesis. Pennsylvania State University. Throssel, Clark Management practices affecting bentgrass putting green speed. CPTF Newsletter (March/April):2-3). Generally Accepted Agricultural and Management Practices for Irrigation Water Use. Michigan Department of Agriculture. January Water Withdrawals for Golf Course Irrigation in Michigan, by County. Michigan Department of Environmental Quality Enviro-weather Automated Weather Station Network formerly Michigan Automated Weather Network (MAWN) Present. The Water Industry in Michigan. Michigan DEQ Water Withdrawal Reports Ball Mark Repair image Dave Martin / Getty Images Putt image Unknown Author
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