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Elementary Principles of Scientific Agriculture (Classic Reprint)
N. T. Lupton
No preview available - 2017
absorbed abundant ammonia animals APPLETON atmosphere bodies bone phosphate bones burning calcium carbonate Calcium oxide calcium phosphate called carbon dioxide caustic cent CHAPTER chemical chemist chemistry chlorine clay clover combination combustion composition compounds constituents contains corn cotton cotton-seed crops cultivation decay decomposition deficient earth escape excrements farm farmer and planter flame gases gives growth of plants guano gypsum heat hydrochloric acid hydrogen Illustrations important improvement of soils inorganic iron kind land light lime liquid Magnesium manganese manganese dioxide manure marl mentioned metal mixed moisture necessary nitrate nitrogen organic matter oxide oxygen phosphate phosphoric acid phosphorus piece plant-food plow portion potash potassium Potassium oxide pounds principles produce properties quantity require rock roots rotation salts sand seed silicon sodium solid starch sub-soil substances sugar sulphate sulphuric acid superphosphate supply surface tion valuable vegetable wheat wineglass woody fibre