Optimal Nitrogen and Potassium Fertilization Rates for Establishment of Warm‐Season Putting Greens

Autor: George H. Snyder, J. H. Rowland, John L. Cisar, Alan L. Wright, Jerry B. Sartain, John E. Erickson
Rok vydání: 2010
Předmět:
Zdroj: Agronomy Journal. 102:1601-1605
ISSN: 1435-0645
0002-1962
Popis: Proper fertilization of golf course putting greens during grow-in provides rapid turfgrass cover, high quality putting surfaces, and limits environmental impacts. Different levels ofN and Kwere applied to `TifDwarf' and `TifEagle' bermudagrasses [Cynodon dactylon (L.) Pers. x C. transvaalensis Burt Davy], `SeaDwarf' seashore paspalum (Paspalum vaginatum Swartz), and 'PristineFlora' zoysiagrass [Zoysia japonica Stued. by Zoysia tenuifolia (L.) Merr.], sprigged at a rate of 36.6 m 3 ha -1 on a USGA-specified green, to compare grow-in rate and qualitative turfgrass characteristics. Fertilizer treatments included 1.2, 2.4, 3.7, or 4.9 g N m -2 wk -1 , and a one-time application of polymer-coated urea (PCU) at 39.1 g N m -2 , with each N rate coinciding with four N/K fertilization ratios: 1:1, 1:2, 1:3, or 1:4. Visual measurements of grow-in rate were generally similar within cultivars with 2.4, 3.7, or 4.9 g N m -2 wk -1 . There were no significant effects for turfgrass growth or quality among N/K treatments. The 2.4 g N m -2 wk -1 rate was considered best for rapid establishment of all cultivars. Although 1.2 g N m -2 wk -1 amended turfgrass was slower to establish, this rate provided a more desirable putting surface and further decreased the potential for nutrient leaching.
Databáze: OpenAIRE
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