Agriculture Through the Laboratory and School Garden: A Manual and Text-book of Elementary Agriculture for SchoolsO. Judd Company, 1905 - 403 páginas |
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Página 11
... ammonia , nitrous and nitric acids , and ozone . 3 vol . 10 = 2 vols . , of zone . Samemather but combined with 4. Alternations of Heat and Cold . - In dry , a different " hot countries , rocks become excessively heated amount during ...
... ammonia , nitrous and nitric acids , and ozone . 3 vol . 10 = 2 vols . , of zone . Samemather but combined with 4. Alternations of Heat and Cold . - In dry , a different " hot countries , rocks become excessively heated amount during ...
Página 31
... ammonia or to free ni- trogen . In the processes of nitrification , ammonia is one of the first products formed from ferment- ing organic matter by one species of bacteria . Le Cormation The ammonia ( NH ̧ ) is oxidized to NATURE AND ...
... ammonia or to free ni- trogen . In the processes of nitrification , ammonia is one of the first products formed from ferment- ing organic matter by one species of bacteria . Le Cormation The ammonia ( NH ̧ ) is oxidized to NATURE AND ...
Página 32
... ammonia ( NH ̧ ) is oxidized to nitrous acid ( HNO , ) by another species ; this in turn is changed into nitric acid ( HNO , ) by still another species . In a similar manner the opposite pro- cess of denitrification goes on . First ...
... ammonia ( NH ̧ ) is oxidized to nitrous acid ( HNO , ) by another species ; this in turn is changed into nitric acid ( HNO , ) by still another species . In a similar manner the opposite pro- cess of denitrification goes on . First ...
Página 48
... ammonia , and water , which is fur- nished by its ultimate decomposition , but more especially on account of the improvement of the physical condition of the soil . Humus absorbs and retains moisture , and thus improves a sandy soil ...
... ammonia , and water , which is fur- nished by its ultimate decomposition , but more especially on account of the improvement of the physical condition of the soil . Humus absorbs and retains moisture , and thus improves a sandy soil ...
Página 81
... ammonia directly from the air . " - Year book , United States Department of Agriculture , 1901 . + Symbiosis . See " Leguminous Plants . " is so essential to plant growth , it must be THE SOIL AS RELATED TO PLANTS . 81 LEGUMINOUS PLANTS.
... ammonia directly from the air . " - Year book , United States Department of Agriculture , 1901 . + Symbiosis . See " Leguminous Plants . " is so essential to plant growth , it must be THE SOIL AS RELATED TO PLANTS . 81 LEGUMINOUS PLANTS.
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Agriculture Through the Laboratory and School Garden: A Manual and Text-Book ... Caroline Ruth Jackson Sin vista previa disponible - 2018 |
Términos y frases comunes
acid acre Agricultural Experiment Station alfalfa ammonia amount animal asexual reproduction bacteria birds Bordeaux mixture Bulletin butter fat carbohydrates carbon casein cent chemical churning clover color compost contains corn Cow-peas cream crop Department of Agriculture deposits dry matter elements ether extract farm farmer feed fertilizer flowers fruit garden grafting green manuring ground grown growth heat inches insects kind larva larvæ layer leaves leguminous plants lime material ment milk mixture moist moisture nitrogen nutritive ratio oats obtained Paris green phosphate phosphoric phosphoric acid plant-food plant-lice plowing potash potassium protein Pruning quantity red clover removed rock roots rotation sand scale insects seedlings seeds selection shrubs silage skim-milk soil soluble species spraying spring stable compost stem sulphate supply surface temperature tion tree tube United States Department Variation vary vegetable weeds wheat winter Year-book
Pasajes populares
Página 317 - As in an idiot's brain remembered words Hang empty 'mid the cobwebs of his dreams ! Will bleat of flocks or bellowing of herds Make up for the lost music, when your teams Drag home the stingy harvest, and no more The feathered gleaners follow to your door ? " What ! would you rather see the incessant stir Of insects in the windrows of the hay, And hear the locust and the grasshopper Their melancholy hurdy-gurdies play ? Is this more pleasant to you than the whir Of meadow-lark, and her sweet roundelay,...
Página 317 - You call them thieves and pillagers ; but know, They are the winged wardens of your farms, Who from the cornfields drive the insidious foe, And from your harvests keep a hundred harms ; Even the blackest of them all, the crow, Benders good service as your man-atarms, Crushing the beetle in his coat of mail, And crying havoc on the slug and snail.
Página iii - Give fools their gold, and knaves their power ; Let fortune's bubbles rise and fall ; Who sows a field, or trains a flower, Or plants a tree, is more than all. For he who blesses most is blest ; And God and man shall own his worth Who toils to leave as his bequest An added beauty to the earth.
Página 335 - Dissolve as much common washing soda as possible in six gallons of water, then dissolve one gallon of ordinary soft soap in the above and add one pint of crude carbolic acid and thoroughly mix ; slack a quantity of lime in four gallons of water so that when it is added to the above, the whole will make a thick whitewash ; add this to the above and mix thoroughly, and finally add one-half pound of paris green or one-fourth pound of powdered white arsenic and mix it thoroughly in the above.
Página 394 - Rhode Island: Kingston. South Carolina: Clemson College. South Dakota: Brookings. Tennessee: Knoxville. Texas: College Station. Utah: Logan. Vermont: Burlington. Virginia: Blacksburg. Washington: Pullman. West Virginia: Morgantown. Wisconsin: Madison. Wyoming: Laramie.
Página 113 - Having secured an organism which was able to fix such a largo amount of nitrogen, it was necessary to devise some means of preventing this property from being lost, as well as to enable the cultures to be distributed in sufficient quantity to be of some practical use. It is now known that the bacteria, when grown upon nitrogen-free media, will retain their high activity if they are carefully dried out and then revived in a liquid medium at the end of varying lengths of time. By using some absorbent...