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| Web URL(s): | https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/139105
Last checked: 04/04/2022
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Schlossberg, Maxim J. |
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| Author Affiliation: | Pennsylvania State University, University Park, PA |
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| Title: | Diminishing control units do not preclude universal estimations of organic N fertilizer residual availability from days after application |
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| Section: | Virtual session--turfgrass science poster
Other records with the "Virtual session--turfgrass science poster" Section
C05 turfgrass science
Other records with the "C05 turfgrass science" Section
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| Meeting Info.: | Salt Lake City, Utah: November 7-10, 2021 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2021, p. 139105. |
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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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| Related Web URL: | https://scisoc.confex.com/scisoc/2021am/mediafile/Handout/Paper139105/2021_ASA_Poster2.pdf
Last checked: 04/05/2022
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Notes: Direct download
http://docs.google.com/viewer?url=https://scisoc.confex.com/scisoc/2021am/mediafile/Handout/Paper139105/2021_ASA_Poster2.pdf
Last checked: 04/05/2022
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| Abstract/Contents: | "Nitrogen fertilizers containing water-insoluble N forms afford turfgrass managers greater flexibility in formulating their nutrient management plans. Modelling enhanced efficiency fertilizer N recovery by a creeping bentgrass system may assist development of responsible application rate thresholds. Employ of multispectral radiometry by research scientists to characterize turfgrass canopy color, density, N status, and/or a/biotic stress permits rapid, repeatable measures of canopy reflectance by any number of operators. Furthermore, said measures generate continuous, ratio data readily complemented by current GIS platforms and emerging automated sampling technologies. The experimental objective was to systematically evaluate, under an array of field conditions, creeping bentgrass canopy response up to 12 months following single 61 kg N/ha applications of natural organic granular fertilizer (16% N) made from late May to late July to assist the development of responsible application rate thresholds by regional agencies. Following initial treatment application, a passive multi-spectral radiometer measured canopy reflectance relative to simultaneous irradiance in the 460, 510, 560, 610, 660, 710, 760, and 810 ±5-nm wavebands. Complete randomized designs permit powerful inference between treatment groups comprised of dissimilar replication number. Differences between a dynamic number of fertilized or unfertilized plots was modelled using vegetative indices over days after fertilizer application. While residual effects of crossover treatments in classic crossover designs may prove problematic, response of N-deficient turfgrass to N fertilizer has proven independent and reliable. Results are presented." |
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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):
Schlossberg, M. J. 2021. Diminishing control units do not preclude universal estimations of organic N fertilizer residual availability from days after application. Agron. Abr. p. 139105. |
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Last checked: 04/04/2022
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