publication . Article . Other literature type . 2016

Manure, Soil Organic Matter and Fertility

Petkova, Zdravka;
Open Access English
  • Published: 28 Apr 2016 Journal: Bulgarian Journal of Soil Science (issn: 2534-8787, eissn: 2367-9212, Copyright policy)
  • Publisher: Bulgarian Soil Science Society
Higher content of soil organic matter can greatly reduce the difficulties of a good crop production system. Content of organic matter in the majority of Bulgarian soils is very low which is evident from the results of soil survey and the data from mass chemical soil tests – nearly 60% of studied soils are with humus content lower than 2.5%. The organic fertilization has direct effect on supplying humic substances in soil. On the basis of some Bulgarian soil types, it is shown the inclusion of organic fertilizers into the fraction of humic acids. A pot experiment and a small field study with Haplic Chernozems show an increase into the fraction of free humic acids...
Medical Subject Headings: complex mixtures
free text keywords: oil organic matter, nitrogen, fertilization, humic acid s, Haplic Chernozems, Science, Q, soil organic matter, nitrogen, fertilization, humic acids, Haplic Chernozems
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Other literature type . 2016
Provider: Datacite
Other literature type . 2016
Provider: Datacite
Article . 2016
Provider: ZENODO
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