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| Publication Type:
| Refereed |
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| Author(s): | Lee, David J.;
Peacock, Charles H. |
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| Author Affiliation: | Department of Crop Science, North Carolina State University, Raleigh, North Carolina |
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| Title: | Evaluation of the effect of natural organic sources on nitrogen release and turfgrass quality |
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| Section: | Soil biology & chemistry & plant nutrition
Other records with the "Soil biology & chemistry & plant nutrition" Section
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| Meeting Info.: | Llandudno, Wales, UK: July 10-15 2005 |
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| Source: | International Turfgrass Society Research Journal. Vol. 10, No. Part 2, 2005, p. 956-961. |
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| Publishing Information: | Aberystywth, Ceredigion, UK: International Turfgrass Society |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Organic fertilizers; Nitrogen; Turfgrass quality; Fertilizer evaluation; Growth; Cynodon dactylon; Cynodon transvaalensis; Agrostis stolonifera; Fertilizer release rate; Controlled-release nitrogen
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| Cultivar Names: | Cato; Tifway |
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| Abstract/Contents: | "Natural organic fertilizers are often used in turfgrass management as a source of nitrogen (N) and other essential nutrients for plant growth. Release of N from these materials is dependent upon soil moisture, temperature, and microbiological activity. The objective of this study was to evaluate N release rates from different natural organic fertilizers in a controlled environment and turf responses to these N sources in the field. Bulk soil was collected from a managed bermudagrass turf area and transferred to plastic bags. Selected organic materials were added at a N rate of 75 mg N per 100 g soil and incubated at 33°C for 10 weeks. Samples were removed from the bags every two weeks and analyzed for total inorganic N. Release. Field studies were established on 'Tifway' burmudagrass (Cynodon dactyon (L.) Pers. X Cynodon transvaalensis (Burtt-Davy)) at 2 different sites and on a creeping bentgrass (Agrositis palustris) 'Cato' putting green, Treatments consisted of the natural organic fertilizers from the controlled environment study and other inorganic N carriers used in turfgrass nutrient management programs. Nature SafeTM (8-3-5) and (5-6-6) had the highest N release rates followed by Milorganite. Bion N release rates were similar to the control. The Nature Safe materials had released the greatest amount of applied N fter 10 weeks. MilorganiteTM (6-2-0) released ~60% by 10 wks and BionTM (5-3-0) hog waste approximately 20% of applied N. Turf plots amended with the Nature Safe and Milorganite fertilizers produced turf quality (TQ) ratings similar to those plots amended with the inorganic N materials. Bion fertilizer applications did not result in TQ values comparable to the other fertilizer sources. Natural organic fertilizer composition influenced N release rates. Products with large amounts of undigested proteins (meat, blood, feathers, fish meal) released N faster than materials that had gone through previous digestion (e.g.. human and hog wastes). The timing and magnitude of nitrogen release is important for turf managers to understand when applying these materials to maximize use efficiency." |
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| Language: | English |
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| References: | 10 |
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| Note: | Tables
Graphs
Charts |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lee, David J., and C. H. Peacock. 2005. Evaluation of the effect of natural organic sources on nitrogen release and turfgrass quality. Int. Turfgrass Soc. Res. J. 10(Part 2):p. 956-961. |
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