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| DOI: | 10.2134/agronj2004.0304 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/97/6/1640
Last checked: 11/04/2016
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Teutsch, Chris D.;
Fike, John H.;
Tilson, W. Mac |
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| Author Affiliation: | Teutsch and Tilson: Virginia Polytechnic Institute and State University, Southern Piedmont Agricultural Research and Extension Center, Blackstone, Virginia; Fike: Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia |
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| Title: | Yield, digestibility, and nutritive value of crabgrass as impacted by nitrogen fertilization rate and source |
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| Section: | Forages
Other records with the "Forages" Section
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| Source: | Agronomy Journal. Vol. 97, No. 6, November/December 2005, p. 1640-1646. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Digestibility; Nutrition; Digitaria; Clipping weight; Nitrogen fertilizers; Fertilization rates; Grazing; Animal manures; Ammonium nitrate; Forage; Harvesting
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| Abstract/Contents: | "Crabgrass (Digitaria spp.), a summer annual grass capable of self reseeding, could provide high quality grazing, but little is known about its management in the mid-Atlantic region. This study evaluated the effects of N fertilizer rates and sources on crabgrass yield and nutritive value. Plots were established in late spring of 2001-2003 near Blackstone, VA. The experimental design was a randomized complete block with a factorial treatment arrangement and four replications. Nitrogen rates ranging from 0 to 336 kg ha-1 were applied in 56-kg intervals at seeding as ammonium nitrate (NH4NO3) or broiler litter. Plots were harvested twice in 2001 and three times in 2002 and 2003. Yield increased with N rate for all harvests. Over years and N sources, seasonal yield ranged from 4.2 to 9.8 Mg ha-1. Maximum yield occurred at 300 kg N ha-1. Nitrogen source had little effect on yield but dramatically impacted forage nitrate levels. Over years and N sources mean in vitro true digestibility (IVTD) for first, second, and final harvests were 880, 871, and 786 g kg-1. In 2001 and 2003, first harvest IVTD was negatively correlated with N rate, but positively related at second harvest. Nitrogen source had little effect on IVTD. Over years, N rates, and N sources, CP concentrations at first, second, and final harvests were 105, 105, and 76 g kg-1. These data indicate that crabgrass is a productive and nutritious forage, and that readily available organic N sources such as broiler litter could be effectively utilized for its production." |
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| Language: | English |
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| References: | 30 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Teutsch, C. D., J. H. Fike, and W. M. Tilson. 2005. Yield, digestibility, and nutritive value of crabgrass as impacted by nitrogen fertilization rate and source. Agron. J. 97(6):p. 1640-1646. |
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| DOI: 10.2134/agronj2004.0304 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/97/6/1640
Last checked: 11/04/2016
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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