Soil Conditions And Plant Growth
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).
Source.
Carbon.
Hydrogen.
Oxygen.
Nitrogen.
Ash.
Observer.
Arable land 56-3 4'4 36-0 3'3 TJ u Mulder (204) Garden soil 56-8 4*9 34-8 3*5 ^ - (b) 50-1 4-8 337 6-5 4*9 , " Humic acid " from sugar .
66-4 4-6 29*0 Berthelot and " Humic acid " from Andre (30-32) compost .
53'3 5'6 37'5 3-6 Berthelot and Andr6 (30-32) These results are in accordance with the general fact brought out by the field observations, that under similar conditions the humus mixture is tolerably constant, but it is quite cl...ear that each set of soils gives up a different lot of substances to alkalis. Indeed simple varia- tions in the time or the method of extraction cause differences in the results even from the same soil. 1 The fact that humus is not a definite compound but a complex in- definite colloid was established by van Bemmelen in a remarkable papei in 1888 (19).
What to read after Soil Conditions And Plant Growth?
You can find similar books in the "Read Also" column, or choose other free books by Edward J Edward John Russell to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
).
Source.
Carbon.
Hydrogen.
Oxygen.
Nitrogen.
Ash.
Observer.
Arable land 56-3 4'4 36-0 3'3 TJ u Mulder (204) Garden soil 56-8 4*9 34-8 3*5 ^ - (b) 50-1 4-8 337 6-5 4*9 , " Humic acid " from sugar .
66-4 4-6 29*0 Berthelot and " Humic acid " from Andre (30-32) compost .
53'3 5'6 37'5 3-6 Berthelot and Andr6 (30-32) These results are in accordance with the general fact brought out by the field observations, that under similar conditions the humus mixture is tolerably constant, but it is quite cl...ear that each set of soils gives up a different lot of substances to alkalis. Indeed simple varia- tions in the time or the method of extraction cause differences in the results even from the same soil. 1 The fact that humus is not a definite compound but a complex in- definite colloid was established by van Bemmelen in a remarkable papei in 1888 (19).
What to read after Soil Conditions And Plant Growth?
You can find similar books in the "Read Also" column, or choose other free books by Edward J Edward John Russell to read onlineMoreLess
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