Latvia University of Agriculture RESEARCH FOR RURAL DEVELOPMENT 2017 Annual 23rd International Scientific Conference Proceedings Volume 1 Jelgava 2017 LATVIA UNIVERSITY OF AGRICULTURE ONLINE ISSN 2255-923X RESEARCH FOR RURAL DEVELOPMENT 2017 Volume No 1 2017 ISSN 1691-4031 http://www2.llu.lv/research_conf/proceedings.htm ORGANIZING COMMITTEE Ausma Markevica, Mg.sc.paed., Mg.sc.soc., Mg.sc.ing., Research coordinator, Research and Project Development Center, Latvia University of Agriculture Zita Kriaučiūniene, Dr.biomed., Senior Manager of the Research Department, Aleksandras Stulginskis University Nadežda Karpova-Sadigova, Mg.sc.soc., main manager of Studies Center, Latvia University of Agriculture SCIENTIFIC COMMITTEE Chairperson Professor Zinta Gaile, Dr.agr., Latvia University of Agriculture Members Professor Andra Zvirbule, Dr.oec., Latvia University of Agriculture Professor Irina Arhipova, Dr.sc.ing., Latvia University of Agriculture Associate professor Gerald Assouline, Dr.sc. soc., Director of QAP Decision, Grenoble, France Professor Inga Ciproviča, Dr.sc.ing., Latvia University of Agriculture Professor Signe Bāliņa, Dr.oec., University of Latvia Professor Aivars Kaķītis, Dr.sc.ing., Latvia University of Agriculture Associate professor Antanas Dumbrauskas, Dr.sc.ing., Aleksandras Stulginskis University Associate professor, Senior researcher Āris Jansons, Dr.silv., Latvian State Forest Research Institute “Silava”, Latvia University of Agriculture Associate professor Jan Žukovskis, Dr.oec., Aleksandras Stulginskis University TECHNICAL EDITORS Santa Treija Signe Skujeniece © Latvia University of Agriculture, 2017 The ethic statements of the conference „Research for Rural Development 2017” are based on COPE’s Best Practice Guidelines: http://www2.llu.lv/research_conf/proceedings.htm Approved and indexed: The Proceedings of previous Annual International Scientific Conferences “Research for Rural Development” published by Latvia University of Agriculture since 1994 and has been approved and indexed in to databases: AGRIS; CAB ABSTRACTS; CABI full text; EBSCO Academic Search Complete; Web of Science ™- Clarivate Analytics (former Thomson Reuters); Thomson Reuters Elsevier SCOPUS. Editorial office: Latvia University of Agriculture, Lielā ielā 2, Jelgava, LV-3001, Latvia Phone: + 371 630 05685; e-mail: [email protected] Printed and bound in „Drukātava” LATVIA UNIVERSITY OF AGRICULTURE ONLINE ISSN 2255-923X RESEARCH FOR RURAL DEVELOPMENT 2017 Volume No 1 2017 ISSN 1691-4031 http://www2.llu.lv/research_conf/proceedings.htm FOREWORD The four independent reviewers estimated each paper and recommended 81 articles for publishing at the proceedings consisted of 2 volumes, which started life as presentations at the Annual 23rd International Scientific Conference “Research for Rural Development 2017” held at the Latvia University of Agriculture, in Jelgava, on 17 to 19 May 2017. In the retrospect of four months later, we can count the Conference as a great success. The theme – Research for Rural Development - attracted participation more than 155 researchers with very different backgrounds. There were 124 presentations from different universities of Poland, Kazakhstan, France, Czech Republic, Lithuania, Estonia, India, Russia and Latvia. Thank you for your participation! We are sure that you have learned from the presentations and discussions during the conference and you can use the outcomes in the future. The cross disciplinary proceedings of the Annual 23rd International Scientific Conference “Research for Rural Development 2017” (two volumes since 2010) are intended for academics, students and professionals. The subjects covered by those issues are crop production, animal breeding, agricultural engineering, agrarian and regional economics, food sciences, veterinary medicine, forestry, wood processing, water management, environmental engineering, landscape architecture, information and communication technologies. The papers are grouped according to the sessions in which they have been presented. Finally, I wish to thank Organizing and Scientific Committee and the sponsors for their great support to the conference and proceedings. On behalf of the Organizing Committee of Annual 23rd International Scientific Conference “Research for Rural Development 2017” Ausma Markevica Latvia University of Agriculture Contents CONTENTS FORESTRY Priit Põllumäe, Kristjan Sepp AND WOOD DESCRIBING NON-INDUSTRIAL PRIVATE FOREST OWNERSHIP IN ESTONIA: A PROCESSING QUALITATIVE APPROACH 7 Kaspars Polmanis, Talis Gaitnieks, Viktorija Beļeviča, Dainis Rungis, Anita Baumane OCCURRENCE OF LOPHODERMIUM SPP. IN YOUNG SCOTS PINE STANDS IN LATVIA 14 Jānis Liepiņš, Kaspars Liepiņš MEAN BASIC DENSITY AND ITS AXIAL VARIATION IN SCOTS PINE, NORWAY SPRUCE AND BIRCH STEMS 21 Andis Bārdulis, Ainārs Lupikis, Jeļena Stola CARBON BALANCE IN FOREST MINERAL SOILS IN LATVIA MODELLED BY YASSO07 SOIL CARBON MODEL 28 Andis Kalniņš, Inga Straupe, Līga Liepa THE IMPACT OF MANAGEMENT ON GROUND VEGETATION IN RIGA’S URBAN FORESTS 35 Dace Broka, Līga Liepa, Inga Straupe THE ASSESSMENT OF VEGETATION IN UNMANAGED NEMORAL FORESTS IN ZEMGALE 41 Guna Petaja, Ainārs Lupikis, Andis Lazdiņš CHANGES IN FOREST FLOOR AND TREE VEGETATION IN THE LEVEL II MONITORING PLOT IN VALGUNDE PARISH 47 Ainars Lupikis, Andis Lazdiņš SOIL CARBON STOCK CHANGES IN TRANSITIONAL MIRE DRAINED FOR FORESTRY IN LATVIA: A CASE STUDY 55 Modris Okmanis, Guna Petaja, Ainārs Lupikis PRODUCTIVITY OF MECHANIZED WOOD ASH APPLICATION IN FOREST 62 Kristīne Kenigsvalde, Indulis Brauners, Astra Zaļuma, Jurģis Jansons, Tālis Gaitnieks BIOLOGICAL PROTECTION OF CONIFERS AGAINST HETEROBASIDION INFECTION – INTERACTION BETWEEN ROOT-ROT FUNGUS AND PHLEBIOPSIS GIGANTEA 69 Lāsma Freimane, Olga Miezīte COMPARISON OF RESPONSE REACTION OF PINUS SYLVESTRIS L. AFTER FIRE IN HYLOCOMIOSA AND VACCINIOSA TURF. MEL. 76 Līga Puriņa, Andrejs Dreimanis, Annija Kārkliņa, Linards Sisenis, Andis Adamovičs, Mārtiņš Puriņš FINANCIAL ASSESSMENT OF FAGUS SYLVATICA STANDS IN LATVIA 81 Jēkabs Dzenis, Oskars Krišāns, Juris Katrevičs, Andis Adamovičs INTRA-SEASONAL DEVELOPMENT OF RADIAL INCREMENT OF PICEA ABIES IN LATVIA 86 Gatis Rozītis, Agris Zimelis, Andis Lazdiņš EVALUATION OF PRODUCTIVITY AND IMPACT ON SOIL OF TRACKED PROSILVA F2/2 FORWARDER IN FOREST THINNING 94 Agris Zimelis, Andis Lazdiņš, Andis Ābele THE IMPACT OF FEED ROLLERS ON THE QUALITY OF TIMBER IN THE MANUFACTURING OF POSTS 101 Agris Zimelis, Andis Lazdiņš, Gints Spalva COMPARISON OF PRODUCTIVITY OF VIMEK HARVESTER IN BIRCH PLANTATION AND YOUNG CONIFEROUS STANDS 107 4 RESEARCH FOR RURAL DEVELOPMENT 2017, VOLUME 1 Contents Jānis Magaznieks, Mareks Millers, Zelma Gžibovska QUALITY CHANGES DURING SUMMER – AUTUMN LONG TERM STORAGE OF BIRCH (BETULA PENDULA) ROUNDWOOD 113 Mareks Millers, Jānis Magaznieks, Zelma Gžibovska BLUE STAIN DEVELOPMENT OF SCOTS PINE (PINUS SYLVESTRIS L.) ROUNDWOOD AND ITS INFLUENCING FACTORS 120 Jānis Ivanovs, Irina Sietiņa GIS BASED ANALYSIS OF FOREST SITE PREPARATION 127 WATER Stefanija Miseviciene MANAGEMENT RESEARCH OF SURFACE WATER QUALITY, TREATING IT IN RETENTION PONDS 133 Anda Bakute, Inga Grīnfelde, Ainis Lagzdiņš APPLICATION OF MODEL METQ FOR HYDROLOGICAL CALCULATIONS 139 Oskars Purmalis, Juris Burlakovs REVIVING PROSPECTS FOR LAKE RESTORATION - INVESTIGATING THE GEOCHEMISTRY OF LAKE ALŪKSNE SEDIMENTS 145 RURAL AND Linda Dambeniece-Migliniece, Ainis Lagzdiņš ENVIRONMENTAL IMPACTS OF MUNICIPAL WASTEWATER TREATMENT PLANTS ON WATER ENGINEERING QUALITY IN THE BERZE RIVER BASIN 153 LANDSCAPE Linda Grinberga, Ainis Lagzdins ARCHITECTURE NUTRIENT REMOVAL BY SUBSURFACE FLOW CONSTRUCTED WETLAND IN THE FARM MEZACIRULI 160 Natālija Siņicina, Andris Martinovs AIR IONIZER AND INDOOR PLANTS INTERACTION IMPACT ON ION CONCENTRATION 166 Jovita Pilecka, Inga Grinfelde, Kristine Valujeva, Inga Straupe, Oskars Purmalis HEAVY METAL CONTAMINATION AND DISTRIBUTION IN THE URBAN ENVIRONMENT OF JELGAVA 173 Giedre Ivavičiūte ANALYSIS OF DAMAGED LAND CHANGES IN KLAIPEDA COUNTY OF LITHUANIA 180 Agnese Sofija Kusmane, Una Īle IMPORTANCE OF LANDSCAPE ELEMENTS IN PERCEPTION OF SPATIAL AESTHETICS IN RESIDENTIAL AREAS 187 Ilona Reķe, Armands Celms, Mārtiņš Reiniks NATIONAL HEIGHT SYSTEM TESTING USING GNSS MEASUREMENTS IN LATVIA AND LITHUANIA 195 Vita Cintina, Vivita Baumane DETECTION AND REDUCTION OF LAND DEGRADATION IN SMARDE MUNICIPALITY RURAL TERRITORY 201 FOOD SCIENCE Liene Ozola, Solvita Kampuse THE EFFECT OF VACUUM COOKING ON ENTERAL FOOD MADE FROM FRESH AND SEMI-FINISHED INGREDIENTS 208 Kristīne Žolnere, Inga Ciprovica THE COMPARISON OF COMMERCIALLY AVAILABLE β-GALACTOSIDASES FOR DAIRY INDUSTRY: REVIEW 215 RESEARCH FOR RURAL DEVELOPMENT 2017, VOLUME 1 5 Contents Marika Liepa, Jelena Zagorska, Ruta Galoburda EFFECT OF HIGH PRESSURE PROCESSING ON MILK COAGULATION PROPERTIES 223 Liva Aumeistere, Inga Ciprovica, Dace Zavadska, Konstantīns Bavrins A PRELIMINARY STUDY ON ESSENTIAL MINERALS IN HUMAN MILK: ASSOCIATION WITH DIETARY HABITS 230 Sanita Sazonova, Ruta Galoburda, Ilze Gramatina EFFECT OF HIGH PRESSURE PROCESSING ON MICROBIAL LOAD IN PORK 237 Ilze Kalniņa, Evita Straumīte, Zanda Krūma, Martins Sabovics, Tatjana Kince QUALITY EVALUATION OF POTATO AND VEGETABLE CRISPS IN LATVIAN MARKET 244 VETERINARY Daiga Gāliņa, Anda Valdovska MEDICINE EFFECT OF PROBIOTICS AND HERBALS ON HEALTH AND SHEDDING OF RESISTANT ESCHERICHIA COLI IN PIGLETS 251 Inga Pigiņka-Vjačeslavova, Edīte Birģele CELL PROLIFIRATION ACTIVITY IN LYMPH NODES INFECTED BY PORCINE CIRCOVIRUS-2 259 Sintija Jonova, Aija Ilgaza,