Melamine/urea and oxamide fertilization of Kentucky bluegrass

Wehner, David J.; Martin, Dennis L.

doi:10.1080/00103628909368174

Cited by 12 publications

(9 citation statements)

References 5 publications

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“…Winter fertilization improved color ratings significantly with negligible top growth. The results from this study were consistent with those of several researchers (Wehner and Martin 1989;Turner and Hummel 1992) in that all N applications rapidly increased color but were accompanied by excessive top growth, particularly with high N applications.…”

Section: Clipping Yieldsupporting

confidence: 94%

“…Color ratings increased with increasing N fertilization up to 7.5 to 8.0, depending on the turfgrass species. In close agreement with previous studies (Spangenberg, Fermarian, and Wehner 1986;Wehner and Martin 1989;Turner and Hummel 1992), increasing N significantly enhanced the color in pure turfgrasses. There was no statistically significant difference between the 5 and 7.5 g m 22 mo 21 N rates in the spring, summer, and fall.…”

Section: Colorsupporting

confidence: 91%

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Effects of White Clover Inclusion on Turf Characteristics, Nitrogen Fixation, and Nitrogen Transfer from White Clover to Grass Species in Turf Mixtures

Sincik

Acikgoz

2007

Communications in Soil Science and Plant Analysis

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An irrigated field trial was conducted to test the effects of white clover in three turfgrass species (perennial ryegrass, Kentucky bluegrass, and creeping bentgrass) on color, clipping yield, and botanical composition and to estimate nitrogen (N) 2 fixation and N transfer from white clover to associated turfgrass species under different N-fertilization conditions in 1999-2002.Nitrogen fertilizers significantly increased color ratings in all observations. Grass-white clover mixtures had better color ratings than pure grass at all sampling dates and seasonal averages in unfertilized conditions. Fertilized pure grass plots yielded significantly more than control plots in all turfgrass species. Nitrogen fertilization did not affect clipping yield greatly in turfgrass -white clover mixtures. Nitrogen application significantly decreased white clover percentage in the harvested clippings in second and third year.Nitrogen fertilization increased tissue N concentration positively in all turfgrass species grown alone. In contrast, N fertilization did not greatly affect tissue N concentration of either turfgrass species or white clover in the mixtures. Nitrogen fixation of white clover was estimated as 24.6, 30.7, and 33.8 g m 22 year 21 in perennial ryegrass, Kentucky bluegrass, and creeping bentgrass, respectively. The total estimated N 2 fixation gradually decreased with increasing N fertilization. Nitrogen transfer from white clover to the associated turfgrass varied from 4.2 to 13.7% of the total N that the white clover fixed annually.

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Section: Clipping Yieldsupporting

confidence: 94%

Section: Colorsupporting

confidence: 91%

Effects of White Clover Inclusion on Turf Characteristics, Nitrogen Fixation, and Nitrogen Transfer from White Clover to Grass Species in Turf Mixtures

Sincik

Acikgoz

2007

Communications in Soil Science and Plant Analysis

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“…The nitrogen from melamine was the least available of any nitrogenous fertilizer examined for improving the yields of corn and Bermuda grass (Terman et al 1964). Wehner and Martin (1989) evaluated melamine in combination with urea as a slow-release nitrogen fertilizer for lawn care. Compared with urea alone, the turf grass response from the combined melamine fertilizer application showed no significant residual response as a slow-release fertilizer.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of melamine and its hydroxy derivatives by a bacterial consortium containing a novel Nocardioides species

Takagi

Fujii

Yamazaki

et al. 2011

Appl Microbiol Biotechnol

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Melamine has recently been recognized as a food contaminant with adverse human health effects. Melamine contamination in some crops arises from soil and water pollution from various causes. To remove melamine from the polluted environment, a novel bacterium, Nocardioides sp. strain ATD6, capable of degrading melamine was enriched and isolated from a paddy soil sample. The enrichment culture was performed by the soil-charcoal perfusion method in the presence of triazine-degrading bacteria previously obtained. Strain ATD6 degraded melamine and accumulated cyanuric acid and ammonium, via the intermediates ammeline and ammelide. No gene known to encode for triazine-degrading enzymes was detected in strain ATD6. A mixed culture of strain ATD6 and a simazine-degrading Methyloversatilis sp. strain CDB21 completely degraded melamine, but the degradation rate of cyanuric acid was slow. The degradation of melamine and its catabolites by the mixed culture was greatly enhanced by including Bradyrhizobium japonicum strain CSB1 in the inoculum and adding ethanol to the culture medium. The melamine-degrading consortium consisting of strains ATD6, CDB21, and CSB1 appears to be potentially safer than other known melamine-degrading bacteria for the bioremediation of farmland and other contaminated sites, as no known pathogens were included in the consortium.

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“…Several studies have compared timing and rates of N application to determine their effects on quality, growth, and development of different turfgrass species (5)(6)(7)(8). In several regions, N-fertilization practices in turf involve 3-5 applications during the year (2,6,10,11). However, light and frequent N applications are sometimes preferred to heavy and infrequent applications (1,9).…”

Section: Introductionmentioning

confidence: 99%

Effects of Nitrogen Application Timing on Growth and Quality of a Turfgrass Mixture

Oral

Acikgoz

2001

Journal of Plant Nutrition

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A 3-year field study was conducted to determine the influence of nitrogen (N) application timing on the growth and quality of a turfgrass mixture consisting of perennial ryegrass (Lolium perenne L.), Kentucky bluegrass (Poa pratensis L.), creeping red fescue (Festuca rubra var. rubra L.), and chewings fescue (Festuca rubra var. commutata Gaud.) under irrigated conditions. Nitrogen was applied annually at the rate of 30 g m −2 year −1 , with six application regimes: control ( no N), single spring (30 g m −2 ), single fall (30 g m −2 ), spring + fall (15 + 15 g m −2 ), spring + summer + fall (10 + 10 + 10 g m −2 ), and monthly from April through September (5 g m −2 ).Color, turf quality, clipping weights, and shoot density were correlated with fertilizer rates and application timing in this study. Fertilization monthly or every 2 months resulted in more uniform color and turf quality and less clipping weights than with comparable heavy spring and fall fertilizations. Heavy N applications in the fall did not cause winter injury and produced significantly darker * Address correspondence to Esvet Acikgoz. ORDER REPRINTS 102ORAL AND ACIKGOZ color and more uniform appearance in early spring than other N applications. All N-fertilization regimes increased shoot density, but spring fertilization stimulated density the most. Nitrogen applied monthly or every 2 months was enough to enhance the color, turf quality, and shoot density of the turf during the growing season but did not greatly affect the growth rate.

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Melamine/urea and oxamide fertilization of Kentucky bluegrass

Cited by 12 publications

References 5 publications

Effects of White Clover Inclusion on Turf Characteristics, Nitrogen Fixation, and Nitrogen Transfer from White Clover to Grass Species in Turf Mixtures

Effects of White Clover Inclusion on Turf Characteristics, Nitrogen Fixation, and Nitrogen Transfer from White Clover to Grass Species in Turf Mixtures

Biodegradation of melamine and its hydroxy derivatives by a bacterial consortium containing a novel Nocardioides species

Effects of Nitrogen Application Timing on Growth and Quality of a Turfgrass Mixture

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