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  1. Aphid-Trapping Potato Plants: A Scientific Project of Dr R W Gibson (1979 Video)

    Director
    Chris C Doncaster
    Producer
    Chris C Doncaster
    Subject
    Biology
    Distribution
    Sale (video - BUFVC), Videocassette. VHS. col. 6 min., 1996 sale: £20.00 (+VAT +p&p)

    'Solanum berthaultii’, an insect-resistant wild potato from Bolivia, has abundant sticky-tipped hairs on the foliage to which small insects and mites get stuck. In contrast, the foliage of cultivated...

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  2. Aphid-Eating Ladybirds (1973 Film)

    Subject
    Biology
    Distribution
    Film (16mm)

    A number of ladybirds (coccinella) feed on green-flies and are an important auxiliary to farmers. Starting with an understanding of migratory and gregarious behaviour of certain species, such as ‘Adonia...

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