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Evans, Michael L.; And Others – Scientific American, 1986
Explains the mechanisms and describes the processes that underlie gravitropism in roots. Reviews experimental efforts and investigative results that explored the causes of root behavior. (ML)
Descriptors: Biological Sciences, Botany, Physiology, Plant Growth
Brill, Winston J. – Scientific American, 1981
Elucidates strategies for applying microbiological techniques to traditional agricultural practices. Discusses the manipulation of microorganisms that live with plants and also the problems involved in the introduction of new genes into crop plants by recombinant DNA methods. (CS)
Descriptors: Agricultural Education, Agricultural Production, Agriculture, Agronomy
