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DOI: | 10.1111/j.1365-3180.1983.tb00550.x |
Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3180.1983.tb00550.x/pdf Last checked: 10/24/2013 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Wright, D.;
Hebblethwaite, P. D. |
Author Affiliation: | Department of Agriculture and Horticulture, School of Agriculture, University of Nottingham, Sutton Bonington, Loughborough, UK |
Title: | Volunteer winter wheat: Its effects and control in ryegrass seed production |
Source: | Weed Research. Vol. 23, No. 5, October 1983, p. 273-281. |
Publishing Information: | Oxford, United Kingdom: Blackwell Scientific Publications |
# of Pages: | 9 |
Related Web URL: | http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3180.1983.tb00550.x/abstract Last checked: 10/24/2013 Notes: Abstract only |
Keywords: | TIC Keywords: Density; Dry weight; Growth analysis; Lolium; Ryegrass control; Seed production; Seed yield; Triticum
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Abstract/Contents: | "The effects of different populations of volunteer winter wheal and their control with ethofumesate and TCA on growth, seed yield and yield components of S.24 perennial ryegrass were investigated in lield experiments in 1978 and 1979. Reductions in ryegrass seed yield due to the presence of wheat depended on the density of wheat and the number and dry weight of ryegrass tillers. The greatest percentage reduction in ryegrass seed yield occurred at high densities of wheat (300 plants m-2) when the number of ear-bearing tillers and 1000 seed weight of ryegrass were reduced. When Ihe density of wheat was low (80 plants m-2) a smaller reduction in ryegrass seed yield occurred and the number of live wheat plants remaining gradually decreased. Within the range of wheat densities in these experiments (0-300 plants m -2) a 1% loss in ryegrass seed yield occurred for every 10 wheat plants m-2 present in the crop post winter. Both herbicides caused a reduction in number of ryegrass tillers during growth but, except where TCA was applied at 12 kg ha-1 in November, ryegrass seed yields were not significantly reduced (in comparison with a wheat-free control) and were always greater than those obtained in the presence of wheat where no herbicides had been applied. Levels of volunteer infestation of 300 wheat plants m-2 were controlled with minimum risk of crop damage by applications of 6 kg ha-1 TCA in either October or November, or by application of 19 kg ha-1 ethofumesate in November." |
Language: | English |
References: | 15 |
Note: | Summary appears as abstract Abstract also appears in French and German Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Wright, D., and P. D. Hebblethwaite. 1983. Volunteer winter wheat: Its effects and control in ryegrass seed production. Weed Res. 23(5):p. 273-281. |
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| DOI: 10.1111/j.1365-3180.1983.tb00550.x |
| Web URL(s): http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3180.1983.tb00550.x/pdf Last checked: 10/24/2013 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2221093 |
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