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Silva Balcanica

International Scientific Journal

20 (Special Issue 1) 2019

The papers in this issue were presented at the 19-th Meeting of the International Humic Substances Society, held in Albena resort, Bulgaria from September 16 to 21, 2018.

BULGARIAN HUMIC SUBSTANCES SOCIETY AND AN OVERVIEW ON HUMIC SUBSTANCES RESEARCH IN BULGARIA

Ekaterina Filcheva … 5

SB_20 (Special Issue1)’ 2019-005-028

HUMIC SUBSTANCES, PHYSICOCHEMICAL PROPERTIES AND AGROCHEMICAL CHARACTERISTIC OF STRONGLY LEACHED CHERNOZEM FROM NORTHEASTERN BULGARIA

Toma Shishkov, Ekaterina Filcheva, Margarita Nankova, Milena Kercheva, Emil Dimitrov … 29

SB_20 (Special Issue1)’ 2019-029-044

SOIL QUALITY ASSESSMENT DOWN THE PROFILE OF HAPLIC CHERNOZEMS AS A RESULT FROM 50 YEARS MINERAL FERTILIZATION

Margarita Nankova … 45

SB_20 (Special Issue1)’ 2019-045-053

LONG-TERM LOW-INPUT NUTRITION REGIME OF HAPLIC CHERNOZEMS AND ITS INFLUENCE ON THE PRODUCTIVITY OF T. AESTIVUM L. CULTIVARS

Margarita Nankova, Valentin Savov, Konstantin Chakalov, Ekaterina Filcheva … 55

SB_20 (Special Issue1)’ 2019-055-062

INFLUENCE OF SOIL TYPE AND LAND USE ON SOIL ORGANIC MATTER IN CLIMATE CONDITIONS OF WEST CARPATHIAN MTS. AND PANNONIAN BASIN

Gabriela Barančíková , Erika Tobiašová , Erika Gömöryová, Jarka Makovníková, Ján Halas, Štefan Koco, Rastislav Skalský … 63

SB_20 (Special Issue1)’ 2019-063-070

ORGANIC MATTER CONTENT AND QUALITY OF BULGARIAN SOILS

Ekaterina Filcheva … 71

SB_20 (Special Issue1)’ 2019-071-078

TRACE ELEMENTS AND ORGANIC MATTER COMPOSITION IN STRONGLY LEACHED CINNAMONIC FOREST SOIL FROM PERNIK REGION IN WESTERN BULGARIA

Toma Shishkov, Ekaterina Filcheva … 79

SB_20 (Special Issue1)’ 2019-079-088

MARITSA IZTOK LIGNITE HUMUS MATTER STUDY THROUGH AP-TPR-GC/MS

Maya Stefanova, Stefan Marinov, Jan Czech, Robert Carleer, Jan Yperman … 89

SB_20 (Special Issue1)’ 2019-089-094

CAN HUMIC PRODUCTS SUBSTANTIALLY IMPROVE ECOSYSTEM QUALITY AND ECONOMIC YIELD?

Daniel C. Olk, Dana L. Dinnes, J. Rene Scoresby, Chad R. Callaway, Jerald W. Darlington … 95

SB_20 (Special Issue1)’ 2019-095-110

INFLUENCE OF BIO-HUMATES ON SOME PHYSIOLOGICAL ANSWER OF POINSETTIA

Konstantin Chakalov, Todorka Popova, Valentin Savov, Gergana Angelova-Deleva, Cvetelina Metodieva … 111

SB_20 (Special Issue1)’ 2019-111-115

CHARACTERIZATION OF SOIL ORGANIC MATTER AND PAHs CONCENTRATION IN SPILS AT LIVINGSTON ISLAND, ANTARCTICA

Denitsa Apostolova, Ekaterina Filcheva, Achim Bechtel, Kalinka Markova, Irena Kostova … 117

SB_20 (Special Issue1)’ 2019-117-122

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