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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/79/4/AJ0790040720
Last checked: 12/09/2016
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| Publication Type:
| Refereed |
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| Author(s): | Mosdell, D. K.;
Daniel, W. H.;
Freeborg, R. P. |
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| Author Affiliation: | Former research assistant, professor of agronomy, and professional scientist, respectively, Purdue University, W. Lafayette, IN. |
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| Title: | Evaluation of Oxamide as a Slow-Release Nitrogen Source on Kentucky Bluegrass |
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| Source: | Agronomy Journal. Vol. 79, No. 4, July/August 1987, p. 720-725. |
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| Publishing Information: | Washington: American Society of Agronomy |
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| Keywords: | TIC Keywords: Fertilizer evaluation; Oxamide; Slow-release fertilizers; Nitrogen; Poa pratensis; IBDU; Sulfur-coated urea; Nitrogen recovery; Foliar burn
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| Abstract/Contents: | "Slow-release N fertilizers are used in turfgrass fertilization programs to reduce foliar burn and N losses, and to extend the response period between applications. In this study, oxamide (31% N), an amide of oxalic acid, and a 7:3 N ration or oxamide and urea were evaluated as slow-release N sources on Kentucky bluegrass (Poa pratensis L.) at West Lafayette, IN, on a Toronto silt loam soil (fine-silty, mixed mesic, Udollic Ochraqualfs). Two particle sizes of oxamide, C (1-2.8 mm) and F (< 0.85 mm) were applied as a granular and liquid suspension treatent, respectively. Additional treatments consisted of applying isobutylidene diurea (IBDU), sulfur-coated urea (SCU), and urea. Two and four applications were made, with a total annual application rate of 196 kg N ha-1 yr-1. Recovery of N in the tissue from applications of oxamide C was 51% compared to 41, 39, and 38% for IBDU, oxamide F, and SCU, respectively, averaged over 3 yr. Initial change in visual turf qualtiy and clipping yields in response to oxamide C was slow, similar to that of IBDU; however, residual N release was equal to that of IBDU and greater than that of SCU. Adding urea to oxamide C increased initial yields and turf quality but reduced the duration of turf response as compared to applications of oxamide C alone. At two applications of 98 kg N ha-1, oxamide proved to be a good, slow-release source of N. At four applications per year, initial clipping yields resulting form spring oxamide F applications were lower than those from urea, but turf quality in response to residual N tended to be greater than that of urea. Late fall applications of oxamide F reduced soil NO-3 concentrations shortly after application and in early spring as compared to fall applications of urea. Oxamide F at four applications generally produced a more desirable turf response than did similar applications of urea." |
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| Language: | English |
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| References: | 12 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mosdell, D. K., W. H. Daniel, and R. P. Freeborg. 1987. Evaluation of Oxamide as a Slow-Release Nitrogen Source on Kentucky Bluegrass. Agron. J. 79(4):p. 720-725. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/79/4/AJ0790040720
Last checked: 12/09/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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