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| Web URL(s): | http://www.jstor.org/stable/pdfplus/4045916.pdf
Last checked: 07/22/2009
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| Publication Type:
| Refereed |
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| Author(s): | Santos, Bielinski M.;
Morales-Payan, Jose P.;
Stall, William M.;
Bewick, Thomas A. |
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| Author Affiliation: | Horticultural Science Department, University of Florida, Gainesville, Florida |
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| Title: | Influence of purple nutsedge (Cyperus rotundus) density and nitrogen rate on radish (Raphanus sativus) yield |
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| Section: | Weed biology and ecology
Other records with the "Weed biology and ecology" Section
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| Source: | Weed Science. Vol. 46, No. 6, November/December 1998, p. 661-664. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Cyperus rotundus; Dry weight; Fertilization rates; Nitrogen fertilizers; Shoot growth; Weed density; Yield response
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| Abstract/Contents: | "Greenhouse and field experiments were conducted to determine the effects of nitrogen (N) supply and purple nutsedge population densities on the yield of radish. In the greenhouse studies, additive series with purple nutsedge densities of 0, 50, 100, 200 or 350 plants m-2 were established. Nitrogen rates of 0, 110, 220, or 330 kg ha-1 were provided to the potting medium. A significant density by N interaction was found for radish fresh weight. Within a given nutsedge density, radish yield decreased as N rate increased. In field studies, additive series of 0, 50, 100, 150, or 200 nutsedge plants m-2 were established the same day radish was sown. Nitrogen rates were 100 or 200 kg ha-1. Marketable radish yield losses and nutsedge shoot dry weight and height were determined 30 d after seeding the crop. Nutsedge densities and N rates interactively influenced radish root yield. Radish yield loss reached 100% at nutsedge densities of 75 and 125 plants m-2 at 200 and 100 kg N ha-1, respectively. Purple nutsedge produced larger shoot biomass as N increased from 100 to 200 kg ha-1. Results of both greenhouse and field studies showed that as N increased, the negative effect of the weed on the crop was enhanced." |
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| Language: | English |
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| References: | 18 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Santos, B. M., J. P. Morales-Payan, W. M. Stall, and T. A. Bewick. 1998. Influence of purple nutsedge (Cyperus rotundus) density and nitrogen rate on radish (Raphanus sativus) yield. Weed Sci. 46(6):p. 661-664. |
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| Web URL(s):
http://www.jstor.org/stable/pdfplus/4045916.pdf
Last checked: 07/22/2009
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2203399a |
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