Learning on ScreenStem Nematode, The: A Pest in Agriculture
- Synopsis
- The stem nematode ‘Ditylenchus dipsaci’ causes serious yield losses in temperate regions. Being resistant to drought it is often distributed on seed. Control with chemicals is expensive, but the use of resistant crop varieties or long rotations with non-host crops are effective alternatives. The film shows the effects of stem nematode attack on field beans, oats and onions; and, with high-power cinemicrography and explanatory animated diagrams, how the nematode lives and feeds within host tissues and affects the cell fed upon. The nematode punctures the plant cell with its tubular mouth spear, salivates and is then force-fed for a time. It prolongs the feed by pumping with its oesophagus. Food cells may recover or die. Damage by individual nematodes is slight, but enormous populations develop quickly with devastating results.
- Language
- English
- Country
- Great Britain
- Medium
- Film; Video; Film. 16mm. sd. col. 18 min. Videocassette. Standard formats. col. 18 min.
- Technical information
- Black-and-white / Sound
- Year of production
- 1979
- Availability
- Hire (film - HEFVL)
Sale (video - BUFVC); 1996 sale: £20.00 (+VAT +p&p) - Uses
- Courses in zoology and agricultural sciences.*
- Subjects
- Agriculture; Biology
- Keywords
- eelworms; nematodes; stem nematodes
Credits
- Director
- Chris C Doncaster
- Writer
- Chris C Doncaster; David J Hooper
- Contributor
- Chris C Doncaster
- Cast
Chris C Doncaster
Distribution Formats
- Type
- Film
- Format
- 16mm
Sponsor
Distributor
- Name
Higher Education Film & Video Library
- services@bufvc.ac.uk
- Web
- http://bufvc.ac. External site opens in new window
- Phone
- 020 7393 1503
- Fax
- 020 7393 1555
- Address
- c/o British Universities Film & Video Council
77 Wells Street
London
W1T 3QJ - Notes
- Catalogue available from British Universities Film & Video Council.
- Name
Learning on Screen - the British Universities and Colleges Film and Video Council
- services@bufvc.ac.uk
- Web
- http://bufvc.ac.uk External site opens in new window
- Phone
- 020 3743 2345
- Address
- York House
221 Pentonville Road
London
N1 9UZ - Notes
- The Learning on Screen distribution library is currently only available in part. Please contact us with any individual queries. The two series of InterUniversity History Film Consortium films which make extensive use of archive footage been digitised for free, online viewing by UK HE institutions - see Learning on Screen InterUniversity History Film Consortium Films (qv).
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