3rd UF Water Institute Symposium Abstract

Submitter's Name Jinghua Fan
Session Name Posters - Efficacy of Nutrient Source Control Strategies 2
Category Efficacy of nutrient source control strategies
Poster Number 7
Author(s) Jinghua Fan,  University of Florida, Soil and Water Science Department (Presenting Author)
  George  Hochmuth,  University of Florida, Soil and Water Science Department
  Jerry  Sartain, University of Florida, Soil and Water Science Department
  Jason  Kruse , University of Florida, Environmental Horticulture Department
  Effects of Different Soil and Water Treatments with Reclaimed Water Irrigation on Growth of Turfgrass
  Reclaimed water (RW) is increasingly viewed as a resource for supplying irrigation water and nutrients for landscape plants growth in urban environments. The purpose of this study was (1) to determine if the nutrients (specifically N) in RW are available for turf plant nutrition and (2) to compare the effects of reclaimed and potable water on turfgrass growth and quality. Container experiments were conducted in a greenhouse on the UF campus using St. Augustine (‘Floratam’) and Zoysia (‘Empire’) turfgrass irrigated with reclaimed water. Treatments included irrigation with tap water (control), full irrigation with reclaimed water, irrigation with reclaimed water with additional 2, 6, or 10 mg/L N supply from ammonium nitrate, and a fertilizer treatment based on IFAS standardized N recommendation. Major and minor nutrients other than N were standardized across all treatments. The average nutrient concentration of RW during summer season from the University of Florida wastewater treatment facility on campus is 1-3 mg/L for total N and 0.5 -1.5 mg/L for total P. The growth rate of turfgrass irrigated with reclaimed water was greater than that of lawn grass irrigated with fresh water. The N content from RW can offset the same nutrients supplied from fertilizer. The effect on the growth and quality of turfgrass from the irrigation treatment will be evaluated by plant dry matter yields and nutrient content.