ronmentally less troublesome than the months of January - March, with less potential for nitrate-N leaching in the fall. The- se results are based on north-central Florida conditions and do not apply to more southerly parts of the state. IFAS fertilization recommendations call for year-round fertilization with N for south Florida.
N Source Study This study was conducted beginning in 2008 and is
continuing through 2012 on Floratam St. Augustinegrass and Empire zoysiagrass. Treatments are listed in Table 3 and were applied as granular treatments at 1 lb N 1,000 ft-2 every 60 days, unless noted otherwise. In 2008, this project began in July and therefore only two treatment applications were applied.
In 2008, St. Augustinegrass had no differences in total Table 3. N Source treatments
(lb N 1,000 ft-2 per application)
N Rate Control Ammonium nitrate Urea
30% SRN 50% SRN
32.8% PCN 32.8% PCN Milorganite
1 1 1 2 1
60 days 60 days
60 days 60 days 60 days 120 days 60 days
nitrate-N loading (Figure 5) or as a percent of the applied N that leached as nitrate-N (data not shown). Percentage of applied N leached did not exceed 0.4%. Zoysiagrass had significantly greater leaching from ammonium nitrate than from any of the other N fertilizers, with no differences between the other products. In 2009, there were no differences in leaching due to either grass or N source. Percent of applied N that
AIF Presents “Smart Strategies for Social Media” October 6th
Sure, “everyone” has a Facebook page - but how do you
know if social media is right for your agricultural business or organization? And more importantly, how do you know if it’s working?
The Agriculture Institute of Florida presents a half-day
workshop on Thursday, October 6th at the Rosen Plaza Hotel in Orlando to help you learn more about social media options, including developing strategies and goals and integrating social media tactics into your overall communications plan. Beginning at 9:00 AM, morning sessions will cover social
media basics and a successful case study from a statewide agricultural association followed by lunch with a keynote session on measuring the effectiveness of social media efforts. This workshop will give you the knowledge to choose and use the best social media tools for your needs or take your current efforts to the next level. The Rosen Plaza is located at 9700 International Drive in
Orlando, just across from the Peabody Hotel, site of this year's Florida Farm Bureau Annual Meeting. If you're attend- ing the FFB meeting, we invite you to kick off your conference experience with us!
Info and online registration is available at http://aginstitutesmartsocialmedia.eventbrite.com
. 6 0
Frequency of Application
Dr. Laurie Trenholm, an associate professor in the UF/IFAS Environmental Horticulture Department, can be reached at 352-273-4524 or by email at firstname.lastname@example.org
leached did not exceed 0.98% (ammonium nitrate). While it is common to think of the slow-release N sources
as being less prone to leaching, these results indicate that there are no differences in nitrate-N leaching from either water soluble or slow release sources when they are applied to healthy turfgrass. Healthy turf that provides good ground cover is able to take up the fertilizer that is applied to it, as long as the fertilizer is properly applied.
Closing Thoughts All of the research projects from all locations involved in this study had similar results, indicating that a healthy turfgrass cover mitigates nitrate-N leaching when fertilizer is applied correctly. Maintaining a healthy turfgrass cover includes proper irrigation, mowing, fertilization, and pest control. Following the BMP recommendations for all turf cultural practices can reduce nutrient leaching and potential nonpoint source pollution.
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