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| Web URL(s): | https://scisoc.confex.com/scisoc/2020am/meetingapp.cgi/Paper/125450
Last checked: 09/12/2023 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Côté, Laura;
Grégoire, Guillaume |
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| Author Affiliation: | Centre de recherche et d'innovation sur les végétaux, Département de phytologie, Université Laval, Québec, Qc, Canada |
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| Title: | Reducing nitrate losses through leaching by optimizing turfgrass fertilization |
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| Section: | Turfgrass management and ecology poster (includes student competition)
Other records with the "Turfgrass management and ecology poster (includes student competition)" Section
C05 turfgrass science
Other records with the "C05 turfgrass science" Section
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| Meeting Info.: | San Antonio, Texas: November 9-13, 2020 |
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| Source: | ASA, CSSA, SSSA International Annual Meeting. November 2020, p. 125450. |
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| Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America] |
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| # of Pages: | 1 |
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| Abstract/Contents: | "The environmental impact of turfgrass maintenance on the environment has led to the adoption of regulations by Canadian municipalities to restrict fertilizer applications on home lawns. While previous research has shown that runoff phosphorus losses from these surfaces are generally minimal when good fertilization practices are implemented, nitrate losses through leaching could be further reduced by optimizing different factors. This greenhouse study evaluated NO3-N leaching losses from Kentucky Bluegrass (Poa pratensis. L) grown on three soils: a sand/peat moss mix (80% sand, 20% peat moss), a schist loam (orthic ferro-humic podzol) and a clay loam (ferro-humic podzol). We evaluated eight N sources (urea, Polyon 8 and 12-week release, Duration 45 and 90-days release, XCU, corn gluten meal and UFLEXX) at five application rates (25 to 200 kg N ha-1 yr-1) split in either 1 or 2 applications over two 8-week periods. Turfgrass grown on the loam and clay soils showed higher NO3-N leaching losses (up to 7.4 and 17. 6 mg L -1, respectively) compared to the sandy soil, but, since these losses were high even in the unfertilized pots, they were likely caused by organic matter mineralization following soil disturbance. Consequently, very few differences in NO3-N leaching were observed between treatments in both soil types, although we measured a 33% reduction in losses using split fertilizer applications in the loam trial. In the sand, regardless of time and application number, UFLEXX and urea (150 and 200 kg N ha-1) as well as XCU (200 kg N ha-1) resulted in high NO3-N losses (up to 21.4 mg L-1). However, NO3-N losses from the other N sources were consistently lower than 3 mg L-1. A 20-week study is currently underway to validate these results over a longer time period." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Côté, L., and G. Grégoire. 2020. Reducing nitrate losses through leaching by optimizing turfgrass fertilization. Agron. Abr. p. 125450. |
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Last checked: 09/12/2023 |
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