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Impact of prolonged fertilizer application on the thermographic parameters of humic acids

, : Impact of prolonged fertilizer application on the thermographic parameters of humic acids. Pochvovedenie (6): 130-136

Preparations of humic and fulvic acids have been investigated thermographically for a number of soils-sod-podzolic, chernozems, chestnut soils, typical serozems and meadow-serozemic; all soils being fertilized for a long time (6-100 years) and in different way. Humic acids of different genetic types proved to differ considerably by the number of structural fragments and their resistance to thermic destruction. Fertilization brought about in all cases an increase of peripheric structures in humus acids molecules in proportion as compared to similar acids in non-fertilized soils.


Other references

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Lai, Y.L.; Wu, H.D.; Chen, C.F., 1998: Antioxidants attenuate chronic hypoxic pulmonary hypertension. Because chronic hypoxia increases the production of oxygen radicals, we hypothesized that antioxidants attenuate chronic hypoxic pulmonary hypertension. In part 1, we examined the temporal progress in chronic hypoxic pulmonary hypertension in 46 W...

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Dhingra L.D.; Sharma D.N., 1981: Scrotal histology in relation to testicular homeothermy in buffalo. Detailed histological observations were conducted on different regions of the scrotum of adult healthy Murrah buffalo bulls. A concentric layer of apocrine sweat glands in the dermis and the absence of subcutis resulting in an intimate attachment...

Holmes, J.N., 1975: Low-frequency phase distortion of speech recordings. Journal of the Acoustical Society of America 58(3): 747-749

Krolak, M.; Wisniowski, J.; Drozdzynska, M., 1972: Standardization of the antiglobulin test (Coombs test) for the serological diagnosis of bovine brucellosis. III. Method of producing antiglobulin serum and establishing a reference system. Hyperimmunization of rabbits was started with a series of small doses of antigen (whole bovine serum or a globulin fraction) injected into the conjunctiva. 30 days after the final injection, a large dose of antigen plus adjuvant was injected i/m....

Baer, N., 1981: Manageable shelterbelts: twin row--high density design promises maximum access, height, and ground level density. South Dakota farm and home research South Dakota Agricultural Experiment Station2(1): 12-13