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Gardening expert Chris Beardshaw presents this programme about soil: a scarce resource on the surface of the land which is essential to all life on earth. Travelling in his specially-equipped mobile soil...
Food production is a highly technical business. This programme looks at long-term sustainability in farming. Looks at the basic scientific principles of plant growth - the balance between nutrient and energy...
With the increasing demand for new and improved pastures and high protein food crops, research is seeking to develop better strains of nodulated legumes both for temperate and tropical agriculture. The...
In 1976, the Viking II rocket travelled to Mars and brought back what was thought to be Martian soil containing evidence of life. For thirty years, scientists have been unable to tell if nutrients in the...
Describes common weed species of disturbed soil areas. There are 17 slides from arable land and horticultural plots, and 7 from wayside areas or wasteland. Most of the slides show a close-up shot of a single...
A New Zealand flatworm that eats earthworms was carried to Northern Ireland and spread from there to Scotland and Denmark. Its predations cause a loss of soil fertility and make it a threat to agriculture;...
An account of the nesting habits of the mallee fowl ‘Leipoa ocellata’, a member of the ‘Megapodirdae’ family of mound builders. Incubation of eggs in mounds of earth; male bird controls temperature...
Adults of several species illustrate some of the variations in shape and size of millepedes. Compares general characteristics of millepedes with those of centipedes. Shows scenes of active mating. Shows...
Shows some important ecological features of a tropical evergreen rain forest in Mexico. Filmed at Los Tuxtlas, Southern Veracruz, Mexico, at the forest reserve of the University of Mexico Institute of...
Investigates some of the recent biochemical and genetic advances in the understanding of biological nitrogen fixation. Experiments at Rothamsted in the mid-19th century proved that nitrogen was essential for...
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