Biology, Food and People: The Economic Importance of BiologySt. Martin's Press, 1975 - 246 pagine |
Sommario
Part | 1 |
Cereal Production and Plant Breeding | 21 |
The Chemical Regulation of Plant Growth | 30 |
Copyright | |
17 sezioni non visualizzate
Parole e frasi comuni
agriculture amino acids autotrophs auxin bacteria biology blow-fly blue whales Britain catch cattle cause cells century cereals chemical climate conservation consumed contribute countries crop plants crop rotation cultivation culture diet Dikaryotic economic ecosystem effects effluent eggs energy essential example exploitation farm animals farm land feed fertilisers Figure fin whales fish fisheries food production fungi fungus grain grass growing habitat harvest hectares herbivores heterotrophs host human populations hypha increasing food industry insects intensive rearing killed larvae living London malaria meat micro-organisms milk million tonnes mineral elements molecules mycelium natural nitrogen North Sea nutrients nutrition organisms parasite pastures pest plant breeding plant growth pollution population density population growth potatoes present problems protein protozoa rabbits reduced resistant result rivers salmon Saprophytes seeds sewage sheep species tion tissues tonnes towns toxic utilise variety vegetation vitamin Warfarin weeds whales wheat yield