Foliar Spray of Humic Substances on Seedling Production of Papaya (Pawpaw)
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چکیده
منابع مشابه
Production of humic substances through coal-solubilizing bacteria
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4 Chemical Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306 4.1 Elemental Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 4.2 Molecular Size Distribution and Charge . . . . . . . . . . . . . . . . . . . . . . 309 4.3 Spectral Absorbance and Fluorescence . . . . . . . . . . . . . . . . . . . . . . . 311 4.4 Infrared Spectra . . . . ....
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Conditional distribution coefficients (K(DOM')) for Hg(II) binding to seven dissolved organic matter (DOM) isolates were measured at environmentally relevant ratios of Hg(II) to DOM. The results show that K(DOM') values for different types of samples (humic acids, fulvic acids, hydrophobic acids) isolated from diverse aquatic environments were all within 1 order of magnitude (10(22.5 +/-1.0)-10...
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Results of extensive studies on the basic problems of extraction, isolation, fractionation and purification of soil humic substances are presented. Data on the degradation, functional group analysis and molecular weight determination of purified humic fractions froro the fJ -horizon of a podzol are reported, and the role of huroic substances in the podzolization process is discussed.
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ژورنال
عنوان ژورنال: Journal of Agronomy
سال: 2011
ISSN: 1812-5379
DOI: 10.3923/ja.2011.118.122