Home
  >  
Section 67
  >  
Chapter 66,199

Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: I. Four-year summary of forage characteristics

Coblentz, W. K.; Coffey, K. P.; Smith, T. F.; Hubbell, D. S., I.I.I.; Scarbrough, D. A.; Humphry, J. B.; McGinley, B. C.; Turner, J. E.; Jennings, J. A.; West, C. P.; Popp, M. P.; Hellwig, D. H.; Kreider, D. L.; Rosenkrans, C. F., J.

Crop Science 46(5): 1919-1928

2006

ISSN/ISBN: 0011-183X
DOI: 10.2135/cropsci2005.11-0442
Accession: 066198862
Download citation:  
Text
  |  
BibTeX
  |  
RIS
A systems trial was designed to evaluate forage characteristics within mixed-species pastures consisting of (i) endophyte-infected tall fescue (Festuca arundinacea Schreb.; E+) mixed with common bermudagrass [Cynodon dactylon (L.) Pers.] and other forages; (ii) endophyte-free tall fescue (E-) overseeded into dormant common bermudagrass; and (iii) orchardgrass (OG; Dactylis glomerata L.) established under the same conditions as E-. The E- and OG pastures were grazed with either twice weekly (2W) or twice monthly (2M) rotation schedules, but E+ was grazed only as 2M. Across 41 sampling dates (2000 through 2003) the mean forage mass across all forage systems was 3809 kg ha(-1), and there was an interaction of forage system and sampling date (P = 0.001). In vitro dry matter disappearance (IVDMD) and crude protein (CP) varied (P < 0.0001) with sampling date in seasonal patterns that were generally predictable. Frequencies of tall fescue in E- and E+ pastures increased (P < 0.10) over years, reaching numerical maxima (61 to 72%) at the end of the trial. For OG, frequencies reached numerical maxima of 52 and 42% in 2W and 2M pastures, respectively, but then declined (P < 0.10) over time, ending at 39 and 24%, respectively. At the end of the trial, reinfection of OG pastures by rogue E+ plants reached a numerical maximum frequency of only 10%, and concentrations of total ergot alkaloids in tall fescue plants from E- pastures were only about 25% of those for E+ pastures, thereby suggesting that pasture toxicity can be reduced substantially for at least 5 yr using these alternative forage systems.

PDF emailed within 0-6 h: $19.90




Related References

Coblentz, W. K.; Coffey, K. P.; Smith, T. F.; Hubbell, D. S., I.I.I.; Scarbrough, D. A.; Humphry, J. B.; McGinley, B. C.; Turner, J. E.; Jennings, J. A.; West, C. P.; Popp, M. P.; Hellwig, D. H.; Kreider, D. L.; Rosenkrans, C. F., J. 2006: Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: I. Four-year summary of forage characteristics Crop Science 46(5): 1919-1928
Coblentz, W. K.; Coffey, K. P.; Scarbrough, D. A.; Smith, T. F.; Harrison, K. F.; Hubbell, D. S., I.I.I.; McGinley, B. C.; Turner, J. E.; Humphry, J. B. 2004: Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: four-year summary of forage characteristics Journal of Dairy Science 87: 92-92
Coblentz, W. K.; Coffey, K. P.; Scarbrough, D. A.; Smith, T. F.; Harrison, K. F.; Hubbell, D. S., I.I.I.; McGinley, B. C.; Turner, J. E.; Humphry, J. B. 2004: Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: four-year summary of forage characteristics Poultry Science 83: 92
Coblentz, W.K.; Coffey, K.P.; Smith, T.F.; Hubbell, D.S.I.I.I.; Scarbrough, D.A.; Humphry, J.B.; McGinley, B.C.; Turner, J.E.; Jennings, J.A.; West, C.P.; Popp, M.P.; Hellwig, D.H.; Kreider, D.L.; Rosenkrans, C.F.J. 2006: Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: II. Four-year summary of cow-calf performance Crop Science 46(5): 1929-1938
Coblentz, W. K.; Coffey, K. P.; Smith, T. F.; Hubbell, D. S., I.I.I.; Scarbrough, D. A.; Humphry, J. B.; McGinley, B. C.; Turner, J. E.; Jennings, J. A.; West, C. P.; Popp, M. P.; Hellwig, D. H.; Kreider, D. L.; Rosenkrans, C. L., J. 2006: Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: II. Four-year summary of cow-calf performance Crop Science 46(5): 1929-1938
Coblentz, W. K.; Coffey, K. P.; Scarbrough, D. A.; Smith, T. F.; Hubbell, D. S., I.I.I.; Harrison, K. F.; McGinley, B. C.; Turner, J. E.; Humphry, J. B. 2004: Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: four-year summary of cattle performance Poultry Science 83: 91-92
Coblentz, W. K.; Coffey, K. P.; Scarbrough, D. A.; Smith, T. F.; Hubbell, D. S., I.I.I.; Harrison, K. F.; McGinley, B. C.; Turner, J. E.; Humphry, J. B. 2004: Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: four-year summary of cattle performance Journal of Dairy Science 87: 91-92
Scarbrough, D.A.; Coblentz, W.K.; Coffey, K.P.; Smith, T.F.; Humphry, J.B.; Hubbell, D.S.IIi; Martin, J.K.; Turner, J.E.; Harrison, K.F.; Hellwig, D.H. 2002: Using orchardgrass and endophyte-free fescue versus infected fescue overseeded on bermudagrass for cow herds Year 2 Journal of Animal Science 80(Suppl 2): 92
Coblentz, W.K.; Coffey, K.P.; Smith, T.F.; Scarbrough, D.A.; Humphry, J.B.; Hubbell, D.S.IIi; Martin, J.D.; Turner, J.E.; Harrison, K.F.; Hellwig, D.H. 2001: Using orchardgrass and endophyte-free fescue versus infected fescue overseeded on bermudagrass for cow herds Journal of Animal Science 79(Suppl 2): 97
Peters, C.W.; Grigsby, K.N.; Aldrich, C.G.; Paterson, J.A.; Lipsey, R.J.; Kerley, M.S.; Garner, G.B. 1992: Performance, forage utilization, and ergovaline consumption by beef cows grazing endophyte fungus-infected tall fescue, endophyte fungus-free tall fescue, or orchardgrass pastures Journal of Animal Science 70(5): 1550-1561
Aremu, B.; Essig, H.W. 1992: Endophyte free and endophyte infected fescue for cow calf herds Journal of Animal Science 70(Suppl 1): 21
Adams, W.L.; Tomlinson, J.E.; Watson, V.H.; Mcgee, W.H.; Hutchison, C.F.Jr 1987: Performance of unbred dairy heifers grazing ryegrass endophyte infected fescue with or without clover or endophyte free fescue Journal of Dairy Science 70(Suppl 1): 246
Drewnoski, M. E.; Oliphant, E. J.; Poore, M. H.; Green, J. T.; Hockett, M. E. 2006: Performance of beef heifers strip-grazing stockpiled endophyte infected, non-toxic endophyte infected and endophyte free tall fescue Journal of Animal Science 84: 18-18
Drewnoski, M. E.; Oliphant, E. J.; Poore, M. H.; Green, J. T.; Hockett, M. E. 2009: Growth and reproductive performance of beef heifers grazing endophyte-free, endophyte-infected and novel endophyte-infected tall fescue Livestock Science 125(2-3): 254-260
Pedersen, J.F.; Lacefield, G.D.; Ball, D.M. 1990: A review of the agronomic characteristics of endophyte free and endophyte infected tall fescue Applied Agricultural Research 5(3): 188-194