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Survey of the presence and methods of control of wild oat, black grass and couch grass in cereal crops in the United Kingdom during 1977

Published online by Cambridge University Press:  27 March 2009

J. G. Elliott ,
B. M. Church ,
J. J. Harvey ,
J. Holroyd ,
R. H. Hulls  and
H. A. Waterson
J. G. Elliott
Affiliation:
Agricultural Research Council Weed Research Organization, Begbroke Hill, Yarnton, Oxford 0X5 IPF
B. M. Church
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts AL5 2JQ
J. J. Harvey
Affiliation:
ADAS, ARC Weed Research Organization, Begbroke Hill, Yarnton, Oxford OX5 1PF
J. Holroyd
Affiliation:
Agricultural Research Council Weed Research Organization, Begbroke Hill, Yarnton, Oxford 0X5 IPF
R. H. Hulls
Affiliation:
ADAS Extension Development Unit, Block A, Government Buildings, Coley Park, Reading RG1 6DT
H. A. Waterson
Affiliation:
Advisory and Development Service, The West of Scotland Agricultural College, Auchincruive, Ayr KA6 5HW
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Summary

In summer 1977 a random survey was made of 2250 fields on 1153 farms selected throughout the United Kingdom. Wild oat, Avena spp., was surveyed in all countries; black grass, Alopecurus myosuroides, was surveyed in England and Wales; and couch grass, including Agropyron repens and other perennial grasses, in Scotland and N. Ireland.

Wild oat was reported by farmers on 95% of farms in England, 34% in Wales, 65% in Scotland and 30% in N. Ireland; the areas of infestation in the different countries were 67, 13, 37 and 16% respectively. The majority of wild oat was A.fatua. Only 6% of the cereal area of U.K., including sprayed and unsprayed fields, contained more than one wild oat seed head/m2 (10000/ha), the majority had less than one/20 m2. Black grass was reported on 50% of farms in England (22% of cereal area) mainly in East and South, and on 2% of farms in Wales. Couch grass occurred on 92% of farms in Scotland and 68% in N. Ireland: areas of infestation were 88 and 67% respectively. Most of the infestations of all three weeds had been present for longer than 5 years.

Most farmers intended to eliminate or reduce wild oat and few proposed to hold the weed at its present level or do nothing. Herbicides were used against wild oat on approximately half of the infested area in England and Wales, with proportionately more use in Wales and much less in Scotland and N. Ireland. A third of the black grass infested area of England was treated with a herbicide. There was little spraying against couch grass in Scotland and N. Ireland. Details of dose, time of application and mixing of chemicals were obtained. Wild oat was subsequently found on most of the area treated against this weed, similar observations were made of black grass and couch grass. Most farmers considered herbicide performance good or excellent and those in East and South England believed wild oat to be decreasing as a problem; farmers elsewhere thought the problem to be increasing.

Hand pulling of wild oat (roguing) had occurred on only one tenth of the infested area but a greater area was intended to be rogued after the survey visit. Much of the land that had been rogued was found subsequently to contain few wild oats.

The survey provided information on associations between weed presence, soil type and cropping system, the types of herbicide used and farmers’ impressions of their performance. Comparisons are made with previous surveys in 1972, and information on the disposal of the 1976 crop of straw and on types of cultivation used in different regions is provided. The implications of the results are discussed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 92 , Issue 3 , June 1979 , pp. 617 - 634
Copyright
Copyright © Cambridge University Press 1979

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References

REFERENCES

Advisory Services of the Scottish Agricultural Colleges (1977). Published by the Scottish Agricultural Colleges, Publication No. 28.Google Scholar
Courtney, A. D. & McCallion, T. (1976). Incidence, awareness and action against the wild oat in Northern Ireland. Agriculture in Northern Ireland 51, 70–74.Google Scholar
Cussans, G. W. (1970). Biological background to the control of rhizomatous grasses. Proceedings 10th British Weed Control Conference, vol. 3, pp. 1101–1107.Google Scholar
Cussans, G. W. (1973). A study of the growth of Agropyron repens (L.) Beauv. in a ryegrass ley. Weed Research 13, 283–291.CrossRefGoogle Scholar
Eagle, D. J. (1976). Soil texture classification for the adjustment of herbicide dose. Proceedings 1976 British Crop Protection Conference – Weeds, pp. 981–988.Google Scholar
Elliott, J. G. (1975). Reduced cultivation and direct drilling in farming systems. Outlook on Agriculture 8 (special number), 250–253.CrossRefGoogle Scholar
Ministry of Agriculture, Fisheries and Food (1977a). Agricultural and Horticultural Returns. Censuses and Surveys Branch, Guildford, Surrey.Google Scholar
Ministry of Agriculture, Fisheries and Food (1977b). 1977 National Survey of Wild Oats and other Grass Weeds. Pinner, Middlesex: MAFF (Publications).Google Scholar
Moss, S. R. (1978). The influence of tillage and method of straw disposal on the survival and growth of black grass, Alopecurus myosuroides, and its control by chlortoluron and isoproturon. Annals of Applied Biology. (In the Press.)Google Scholar
Perring, P. H. & Walters, S. M. (1976). Atlas of the British Flora. Botanical Society of the British Isles, Wakefield, England: E. P. Publishing Ltd.Google Scholar
Phillipson, A. (1974). Survey of the presence of wildoat and black-grass in parts of the United Kingdom. Weed Research 14, 123–135.CrossRefGoogle Scholar
Price Jones, D. (1976). Wild Oats in World Agriculture. London: Agricultural Research Council.Google Scholar
Thurston, J. M. (1954). A survey of wild oats (Avena fatua and Avena ludoviciana) in England and Wales in 1951. Annals of Applied Biology 41, 619–636.CrossRefGoogle Scholar
Thurston, J. M. (1968). Weed surveys. Rothamsted Experimental Station, report for 1967, p. 108.Google Scholar
Waterson, H. A. & Davies, G. J. (1973). The distribution of Avena fatua L., Avena strigosa Schreb. and Agropyron repens (L.) Beauv. in barley crops in the West of Scotland. Weed Research 13, 192–199.CrossRefGoogle Scholar
Yates, F. (1975). The design of computer programs for survey analysis. Biometrics 31, 573–584.CrossRefGoogle Scholar