{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T20:02:22Z","timestamp":1782417742318,"version":"3.54.5"},"reference-count":14,"publisher":"STEF92 Technology","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,8,15]]},"abstract":"<jats:p>Cloudberry is a perspective berry crop for extracted peat bog recultivation in Latvia. The study aimed to assess the effect of different fertiliser doses on cloudberry variety Nyby vitality. In 2023, cloudberries were propagated and in September planted outside into outdoor flower beds (24 pots in each bed) with milled raw peat. The beds were separated into four treatments with different doses of complex fertiliser 12-8-16 with micronutrients: control C, N12, N24, and N36 (respectively, 0, 12, 24, and 36 kg ha-1 of N was added throughout the season). Plant leaf chlorophyll in SPAD units was measured weekly from May to August 2024. Leaf size and density were measured at the end of August. Leaf tissue nutrient analysis was done at the end of July to assess the nutritional status of treatments. Results revealed significantly higher chlorophyll content for fertilised cloudberries than the control, but no differences between the fertilised treatments. Leaf size and density did not increase significantly for fertilised treatments. Additionally, leaf tissue nutrient content in Nyby: 1) exceeded wild cloudberry nutrient concentrations; 2) were similar to suggested levels for Rubus berries. Considering that cloudberry vitality did not differ between the fertilised treatments, the lowest dose of fertiliser could be determined as effective, following the principles of sustainable fertilisation practices. The study will continue to assess fertiliser dose effects on cloudberry development.<\/jats:p>","DOI":"10.5593\/sgem2025\/3.1\/s12.33","type":"proceedings-article","created":{"date-parts":[[2025,11,22]],"date-time":"2025-11-22T09:43:57Z","timestamp":1763804637000},"page":"283-290","source":"Crossref","is-referenced-by-count":0,"title":["FERTILISER EFFECT ON CLOUDBERRY GROWTH AND VITALITY IN PEAT \ufffd A PILOT STUDY"],"prefix":"10.5593","volume":"25","author":[{"given":"Laura","family":"Abolina","sequence":"first","affiliation":[{"name":"Latvia University of Life Sciences and Technologies, Faculty of Agriculture and Food technology, Jelgava","place":["Latvia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anita","family":"Osvalde","sequence":"additional","affiliation":[{"name":"University of Latvia, Institute of Biology, Riga","place":["Latvia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andis","family":"Karlsons","sequence":"additional","affiliation":[{"name":"University of Latvia, Institute of Biology, Riga","place":["Latvia"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3602","reference":[{"key":"ref=1","doi-asserted-by":"crossref","unstructured":"[1] Jaakkola M., Korpelainen V., Hoppula K., Virtanen V. Chemical composition of ripe fruits of Rubus chamaemorus L. grown in different habitats. J. Sci. Food Agric., 92, pp 1324\ufffd1330, 2012. DOI: https:\/\/doi.org\/10.1002\/jsfa.4705","DOI":"10.1002\/jsfa.4705"},{"key":"ref=2","unstructured":"[2] Hykkerud A. L., Uleberg E., Hansen E., Vervoort M., M\ufffdlmann J., Martinussen I. Seasonal and yearly variation of total polyphenols, total anthocyanins and ellagic acid in different clones of cloudberry (Rubus chamaemorus L.). Journal of Applied Botany and Food Quality, 91, pp 96\ufffd102, 2018. DOI: https:\/\/doi.org\/10.5073\/JABFQ.2018.091.013"},{"key":"ref=3","unstructured":"[3] Thiem B. Rubus chamaemorus L. \ufffd a boreal plant rich in biologically active metabolites: A review. Biological Letters, 40(1), pp 3\ufffd13, 2003."},{"key":"ref=4","doi-asserted-by":"crossref","unstructured":"[4] Frolov P., Shanin V., Zubkova E., Salemaa M., M\ufffdkip\ufffd\ufffd R., Grabarnik P. Predicting biomass of bilberry (Vaccinium myrtillus) using rank distribution and root-to-shoot ratio  models. Plant Ecology, 223(2), pp 131\ufffd140, 2022. DOI: https:\/\/doi.org\/10.1007\/s11258-021-01199-1","DOI":"10.1007\/s11258-021-01199-1"},{"key":"ref=5","doi-asserted-by":"crossref","unstructured":"[5] Akashi K., Yoshimura K., Nanasato Y., Takahara K., Munekage Y., Yokota A. Wild plant resources for studying molecular mechanisms of drought\/strong light stress tolerance. Plant Biotechnology, 25, pp 257\ufffd263, 2008. DOI: http:\/\/dx.doi.org\/10.5511\/plantbiotechnology.25.257","DOI":"10.5511\/plantbiotechnology.25.257"},{"key":"ref=6","unstructured":"[6] Nollendorfs V., Karlsons A. Ogulaju un auglu koku mineralas barosanas diagnostika, svarigakie sekmigas audzesanas aspekti. In: Nollendorfs V., Osvalde A., Cekstere G., Karlsons A., Abolina L. Augu mineralas barosanas diagnostika un meslosanas optimizacija, LU Akademiskais apgads, Riga, pp 84\ufffd111, 2023. ISBN: 978-9934-18-923-4"},{"key":"ref=7","doi-asserted-by":"crossref","unstructured":"[7] Abolina L., Osvalde A., Karlsons A. Habitat characteristics and mineral nutrition status of Rubus chamaemorus L. in Latvia. Plants, 12, 528, 2023. DOI: https:\/\/doi.org\/10.3390\/plants12030528","DOI":"10.3390\/plants12030528"},{"key":"ref=8","unstructured":"[8] Peatland Ecology Research Group. Production of Berries in Peatlands. Universit\ufffd Laval, Quebec, 134 pp, 2009."},{"key":"ref=9","doi-asserted-by":"crossref","unstructured":"[9] Yu H., Wu H.-S., Wang Z.-J. Evaluation of SPAD and Dualex for in-season corn nitrogen status estimation. Acta Agronomica Sinica, 36(5), 840-847, 2010. DOI: 10.1016\/S1875-2780(09)60051-1","DOI":"10.1016\/S1875-2780(09)60051-1"},{"key":"ref=10","unstructured":"[10] Hart J., Strik B., Rempel H. Caneberries: Nutrient management guide. Oregon State Univ. Extension Service, EM8903-E, 2006. Available https:\/\/catalog.extension.oregonstate.edu\/em8903"},{"key":"ref=11","doi-asserted-by":"crossref","unstructured":"[11] Zhou J., Desjardins Y., Lapointe L. Nutrient uptake kinetics of cloudberry. Journal of Plant Nutrition, 36(8), pp 1219\ufffd1233, 2013. DOI: 10.1080\/01904167.2013.780610","DOI":"10.1080\/01904167.2013.780610"},{"key":"ref=12","doi-asserted-by":"crossref","unstructured":"[12] Yang Y., Huang Z., Wu Y., Wu W., Lyu L., Li W. Effects of nitrogen application level on the physiological characteristics, yield and fruit quality of blackberry. Scientia Horticulturae, 313, 111915, 2023. DOI: 10.1016\/j.scienta.2023.111915","DOI":"10.1016\/j.scienta.2023.111915"},{"key":"ref=13","doi-asserted-by":"crossref","unstructured":"[13] Davenport J. R., Provost J. Cranberry tissue nutrient levels as impacted by three levels of nitrogen fertilizer and their relationship to fruit yield and quality. Journal of Plant Nutrition, 17(10), pp 1625\ufffd1634, 1994. DOI:10.1080\/01904169409364835","DOI":"10.1080\/01904169409364835"},{"key":"ref=14","doi-asserted-by":"crossref","unstructured":"[14] Strik B. C., Bryla D. R. Uptake and partitioning of nutrients in blackberry and raspberry and evaluating plant nutrient status for accurate assessment of fertilizer requirements. HortTechnology, 25(4), pp 452\ufffd459, 2015. DOI: https:\/\/doi.org\/10.21273\/HORTTECH.25.4.452","DOI":"10.21273\/HORTTECH.25.4.452"}],"event":{"name":"25th SGEM International Multidisciplinary Scientific GeoConference 2025","theme":"Earth and Planetary Sciences","location":"Albena, Bulgaria","acronym":"SGEM2025","number":"25","sponsor":["SGEM WORLD SCIENCE (SWS) Scholarly Society, Austria"],"start":{"date-parts":[[2025,6,29]]},"end":{"date-parts":[[2025,7,6]]}},"container-title":["SGEM International Multidisciplinary Scientific GeoConference\ufffd EXPO Proceedings","25th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2025, Water Resources, Forest, Marine, and Ocean Ecosystems, Vol25, Issue 3.1"],"original-title":[],"deposited":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T19:30:00Z","timestamp":1782415800000},"score":1,"resource":{"primary":{"URL":"https:\/\/epslibrary.at\/items\/b46f590a-0795-4dd8-9640-45b3a6d100e5\/fertiliser-effect-on-cloudberry-growth-and-vitality-in-peat-a-pilot-study"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,8,15]]},"references-count":14,"URL":"https:\/\/doi.org\/10.5593\/sgem2025\/3.1\/s12.33","relation":{},"ISSN":["1314-2704"],"issn-type":[{"value":"1314-2704","type":"print"}],"subject":[],"published":{"date-parts":[[2025,8,15]]}}}