The New Encyclopaedia Britannica: Macropaedia: knowledge in depth. 19 vEncyclopaedia Britannica, Incorporated, 1981 - Encyclopedias and dictionaries |
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Page 350
... plants when other factors ( such as light , moisture , temperature , and soil structure ) are favourable . Where fertility of a soil is not good , natural or manufactured materials may be added to supply the needed plant nu- trients ...
... plants when other factors ( such as light , moisture , temperature , and soil structure ) are favourable . Where fertility of a soil is not good , natural or manufactured materials may be added to supply the needed plant nu- trients ...
Page 578
... plants resort to vegetative reproduction more frequently than land plants , although methods of propagation are fairly universal . The uniform environment and abundance of carbon dioxide and water encourage leaf development and sustain ...
... plants resort to vegetative reproduction more frequently than land plants , although methods of propagation are fairly universal . The uniform environment and abundance of carbon dioxide and water encourage leaf development and sustain ...
Page 597
... plant kingdom is largely confined to the flowering plants , though certain nonflowering forms also produce alkaloids ; Lycopodium , or club moss , is particularly rich in alkaloids , and a fungus , Rhizoctonia leguminicola , produces ...
... plant kingdom is largely confined to the flowering plants , though certain nonflowering forms also produce alkaloids ; Lycopodium , or club moss , is particularly rich in alkaloids , and a fungus , Rhizoctonia leguminicola , produces ...
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