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[Influence of straw manuring on the qualitative properties of the organic soil substances of a Lehm-Braunschwarzerde (author's transl)]. 1980

W Heisig, and G Müller, and D Lingner

It is reported on the influence of a long-term field trial with straw manuring at different terms and different nitrogen fertilization steps on the qualitative properties of the organic soil substance. Straw manuring in autumn increased the carbon content in the soil. Increasing amounts of nitrogen intensified this effect. Straw manuring in spring only with simultaneously applied quantities of 100 and 200 kg N/ha, respectively, brought about an increased content of organic substances in soil. With straw manuring in autumn, fractionation of the organic substance in soil showed a smaller amount of humic acids. Increasing nitrogen addition reduced this amount still more than in the plots with straw manuring in spring. The quota of fulvic acids increased. Therefore, the higher content of organic substances, obtained with straw manuring in autumn, is based on an increase of the pre-stages of humic acids and non-humic matter.

UI MeSH Term Description Entries
D008372 Manure Accumulations of solid or liquid animal excreta usually from stables and barnyards with or without litter material. Its chief application is as a fertilizer. (From Webster's 3d ed)
D002244 Carbon A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel. Carbon-12,Vitreous Carbon,Carbon 12,Carbon, Vitreous
D002622 Chemistry, Agricultural The science of the chemical composition and reactions of chemicals involved in the production, protection and use of crops and livestock. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Agricultural Chemistry,Agricultural Chemistries,Chemistries, Agricultural
D001578 Benzopyrans Compounds with a core of fused benzo-pyran rings. Benzopyran,Chromene,Chromenes
D012621 Seasons Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Seasonal Variation,Season,Seasonal Variations,Variation, Seasonal,Variations, Seasonal
D012987 Soil The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants. Peat,Humus,Soils

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