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| DOI: | 10.2135/cropsci2014.02.0130 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/55/5/2319
Last checked: 09/17/2015
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| Publication Type:
| Refereed |
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| Author(s): | Koeritz, Eric J.;
Watkins, Eric;
Ehlke, Nancy J. |
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| Author Affiliation: | Koeritz and Watkins: Dep. of Horticultural Science; Ehlke: Dep. of Agronomy and Plant Genetics, Univ. of Minnesota, St. Paul, MN |
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| Title: | Seeding rate, row spacing, and nitrogen rate effects on perennial ryegrass seed production |
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| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
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| Source: | Crop Science. Vol. 55, No. 5, September/October 2015, p. 2319-2333. |
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| Publishing Information: | Madison, Wisconsin: Crop Science Society of America |
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| # of Pages: | 15 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/55/5/2319
Last checked: 09/17/2015
Notes: Abstract only
https://dl.sciencesocieties.org/publications/cs/articles/55/5/2319?show-t-f=tables&wrapper=no
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Notes: Figures only |
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| Keywords: | TIC Keywords: Cultivar evaluation; Growth factors; Lolium perenne; Nitrogen fertilization; Seed production; Seed yield; Seeding rate
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| Abstract/Contents: | "Seeding rates (SRs) and row-spacing widths (RSWs) in perennial ryegrass (Lolium perenne L.) seed production are variable and the impacts of these factors on perennial ryegrass seed yield and plant growth characteristics are not well characterized. Experiments were conducted during 2010 and 2011 in first-year seed production fields near Roseau and Roosevelt, MN, where five SRs (1.3, 2.6, 5.2, 7.8, and 10.4 kg pure live seed [PLS] ha-1), three RSWs (10, 20, and 30 cm), and three N rates (67, 112, and 157 kg N ha-1) were evaluated in a split-split plot design under nonirrigated conditions. The 30-cm RSW resulted in 45% greater stem rust incidence, 8% fewer fertile tillers, and up to 2% greater 1000-seed weight (TSW) vs. the 10-cm RSW. For every unit of N applied, N increased biomass by 4 to 25 kg ha-1, fertile tillers by 3.7 tillers m-2, and seed yield by up to 4.7 kg seed ha-1, depending on environment. The 7.8 and 10.4 kg PLS ha-1 SRs combined with the 10-cm RSW, 157 ha-1 N rate, and other management factors, nearly eliminated weeds (<2% weed cover) compared with with [the] wider RSWs and lower SRs. Weed cover was always inversely correlated with early-season vegetative cover (EVC). Seeding rates of 2.6 kg PLS ha-1 and greater resulted in similar seed yields suggesting that early-season plant density is not as important for seed yield as other management factors such as N rate, which significantly improved seed yield in three environments." |
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| Language: | English |
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| References: | 29 |
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| Note: | Equation
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koeritz, E. J., E. Watkins, and N. J. Ehlke. 2015. Seeding rate, row spacing, and nitrogen rate effects on perennial ryegrass seed production. Crop Sci. 55(5):p. 2319-2333. |
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| DOI: 10.2135/cropsci2014.02.0130 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/55/5/2319
Last checked: 09/17/2015
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/pdfs/55/5/2319
Last checked: 09/17/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2211522a |
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