Sports Turf Establishment- From N to Mycorrhiza Roch Gaussoin Professor & Head Department of Agronomy & Horticulture University of Nebraska-Lincoln
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1 1/11/215 Sports Turf Establishment- From N to Mycorrhiza Roch Gaussoin Professor & Head Department of Agronomy & Horticulture University of Nebraska-Lincoln Sports Turf Grow-In Experiment Experimental Process Solicited cooperators Follow each company s recommended protocol Included treatments to separate out each component of each protocol Kentucky bluegrass blend 9:1 Spec. sand:dakota Reed Sedge Peat From N to Mycorrhiza?? Biostimulants cytokinins, AA s etc. Mycorrhiza form a mutualistic relationship with the roots of most plant species Experimental Process Two planting dates: Mid-summer (Suboptimal) Late-summer (Optimal) 37 treatments; 111 plots Analyze Fertilizer Mycorrhizae Biostimulant Liquid (foliar) fertilizer Andersons Golf Products Preplant incorporated Poly S Poly S A-TEP Hi-Mag 3.3#N, 2.5 #P, 2.4 #K / 1 ft 2 Weekly applications after germination #N / 1 ft 2 Also used in combination with other products 1
2 1/11/215 Company 1 Mycorrhizae (Mix with seed) Biostimulant (Preplant) Fertilizer (Preplant) Slow release N-38%N Slow release N-4%N Used alone and in combination Company 2 Mycorrhizae (Mix with seed) every 3 days) biostimulant Fertilizer (Preplant + 3 days) Fe (6 + 9 days) Used alone and in combination Company 3 Preplant Fert/biostim Blend Foliar (Weekly after germination) Foliar N Foliar P Foliar K 3--1 Foliar Silica Organic Source 4--1 Company 4 Preplant seed nutrients Foliar (Weekly after germination) Even weeks experimental 13 micronutrients humic based nutrients non-fungicide pathogen protection Odd weeks experimental 23 Foliar silica organic amino acids, proteins, and carbohydrates non-fungicide pathogen protection Summer seeding did not include Foliars with Conventional fertilizers Company 5 Preplant Conventional Fertilizer Foliar (Weekly after germination) Foliar 1 Foliar 2 Foliar
3 1/11/ Biostimulants Mycorrhizae with Biostimulants and Mycorrhizae with Biostimulants and Mycorrhizae
4 1/11/ with Biostimulants and Mycorrhizae with Biostimulants and Mycorrhizae with Mycorrhizae with Biostimulants with Mycorrhizae with Biostimulants Is visual cover good enough? 4
5 1/11/215 Shear Clegg Results Shear clegg strength (82 daa) between untreated and conventional fertilizer treatments 3 P=.1 25 Shear-Clegg Strength Conventional fertilizer Shear-Clegg Strength Results Shear clegg strength (82 daa) between mycorrhizae+biostimulant alone and conventional or organic fertilizer with mycorrhizae+biostimulant treatments Mycorrhizae and biostimulant P=.1 Conventional or organic fertilizer with mycorrhizae and biostimulant Top Treatments 1. Any treatment with fertilizer Mycorrhizae and/or biostimulant did not significantly speed up establishment Foliar fertilizers did not speed up establishment Bottom Treatments Bottom Line for Establishment Mycorrhizae and/or biostimulant alone Amount of N and P applied At establishment During first 3 days after germination Readily available fertilizers provide best establishment Quick vs. slow release Little benefit was realized from mycorrhizae, biostimulants or foliar fertilizers Shear strength was consistent with cover ratings 5
6 1/11/
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