Template-Type: ReDIF-Article 1.0 Author-Name: Meksy Dianawati Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Kiki Kusyaeri Hamdani Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Yati Haryati Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Bambang Susanto Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Ika Cartika Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Rahmat Awaludin Salam Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Food Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Neni Gunaeni Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Indijarto Budi Rahardjo Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Agus Nurawan Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Hanudin Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Asih Kartasih Karjadi Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Amisnaipa Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Paulina Evy Retnaning Prahardini Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Bagus Kukuh Udiarto Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Author-Name: Sortha Simatupang Author-Workplace-Name: National Research and Innovation Agency (BRIN), Research Organisation for Agriculture and Food, Research Centre for Horticultural Crops, Cibinong Science Centre, Cibinong, Indonesia Title: Cultivar responses to daylength and stem descent in aeroponic seed potato Abstract: Extending daylength during vegetative growth may improve aeroponic potato (Solanum tuberosum L.) growth but yield responses may depend on cultivar and canopy disturbance. Two cultivars, cvs. Atlantic Malang and Chipita, were grown under a natural 12 h day or a 16 h day created by 4 h supplemental LED lighting until 6 weeks after planting (WAP), combined with no stem descent or stem descent at 2 or 4 WAP. A split-plot randomised complete block design with five blocks was used; daylength was the main-plot factor and six cultivar-stem descent combinations were subplots. Data were analysed by split-plot ANOVA followed by Tukey's test and principal component analysis. At 6 WAP, 16 h increased canopy, root, stolon, and early tuber growth. In cv. Atlantic Malang without stem descent, 16 h increased final tuber weight per plant by 55%. In cv. Chipita, 16 h combined with stem descent at 4 WAP reduced final tuber number and weight by 71% and 59%, respectively. Cv. Chipita without stem descent or with descent at 2 WAP produced the greatest plot-level yields. Thus, daylength extension should be matched to cultivar and stem-descent timing. Keywords: minituber, crop architecture, soilless cultivation, source-sink, tropical highland Journal: Plant, Soil and Environment Number: 49802 Volume: preprint DOI: 10.17221/388/2026-PSE File-URL: http://pse.agriculturejournals.cz/doi/10.17221/388/2026-PSE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/pse-000004-9802.txt Handle: RePEc:caa:jnlpse:v:preprint:id:388-2026-PSE Template-Type: ReDIF-Article 1.0 Author-Name: Yaroslav Makukh Author-Workplace-Name: National Academy of Agrarian Sciences of Ukraine, Institute of Bioenergy Crops and Sugar Beet, Kyiv, Ukraine Author-Name: Svitlana Remeniuk Author-Workplace-Name: National Academy of Agrarian Sciences of Ukraine, Institute of Bioenergy Crops and Sugar Beet, Kyiv, Ukraine Author-Name: Vladyslav Riznyk Author-Workplace-Name: National Academy of Agrarian Sciences of Ukraine, Institute of Bioenergy Crops and Sugar Beet, Kyiv, Ukraine Author-Name: Snizhana Moshkivska Author-Workplace-Name: National Academy of Agrarian Sciences of Ukraine, Institute of Bioenergy Crops and Sugar Beet, Kyiv, Ukraine Author-Name: Tetiana Petrenko Author-Workplace-Name: National Academy of Agrarian Sciences of Ukraine, Institute of Bioenergy Crops and Sugar Beet, Kyiv, Ukraine Author-Name: Oleksandr Polovynchuk Author-Workplace-Name: National Academy of Agrarian Sciences of Ukraine, Institute of Bioenergy Crops and Sugar Beet, Kyiv, Ukraine Author-Name: Oleh Atamanіuk Author-Workplace-Name: National Academy of Agrarian Sciences of Ukraine, Institute of Bioenergy Crops and Sugar Beet, Bila Tserkva Experimental Breeding Station, Kyiv, Ukraine Author-Name: Yurii Remeniuk Author-Workplace-Name: National Academy of Agrarian Sciences of Ukraine, NSC Institute of Agriculture, Chabany, Fastiv, Kyiv, Ukraine Author-Name: Ksenia Kopchuk Author-Workplace-Name: Ivanivka Research and Breading Station, IBCSB, Sumy Region, Okhtyrka, Soniachne, Ukraine Title: Long-term effects of fertilisation systems on soil nutrient status, soil organic carbon content and crop productivity in a typical Chernozem under different crop rotations Abstract: The aim of this study was to evaluate the long-term effects of fertilisation systems and crop rotation structure on soil nutrient status, organic carbon (OC) content and stocks, and crop productivity in a typical Chernozem. The study was conducted during 2019-2024 as part of a long-term field experiment established in 1976 at the Bila Tserkva Experimental Breeding Station in the Right-Bank Forest-Steppe of Ukraine. Four fertilisation treatments were compared in cereal-fodder-row (CFR) and cereal-row-crop (CRC) rotations: unfertilised since 1976, mineral fertilisation with straw incorporation, mineral + cattle manure fertilisation, and organic fertilisation. Soil mineral N, plant-available P, exchangeable K, OC content, and OC stocks were determined in the 0-30 cm soil layer. Crop yields were assessed for winter wheat, sugar beet and spring barley. The mineral + cattle manure treatment generally maintained favourable soil nutrient conditions and resulted in the highest OC content and stocks in both crop rotations, reaching 1.98% and 70.8 t C/ha in the CFR rotation and 1.77% and 63.2 t C/ha in the CRC rotation. However, the higher nutrient inputs under this treatment did not result in proportionally higher residual availability of all nutrients. Under sugar beet, its clearest post-harvest advantage was observed for soil mineral N, whereas exchangeable K was not consistently higher than under the other fertilised treatments, and plant-available P in the CFR rotation did not differ significantly between the mineral + straw and mineral + cattle manure treatments. The highest mean yields of winter wheat, sugar beet and spring barley were generally obtained under the mineral + cattle manure treatment. Sugar beet root yield reached 46.9 t/ha in the CFR crop rotation and 42.2 t/ha in the CRC rotation, compared with 18.8 and 17.1 t/ha, respectively, in the unfertilised treatments. The results demonstrate that combining organic and mineral nutrient sources with crop residue return and an appropriate crop rotation structure is an effective strategy for maintaining typical Chernozem fertility and sustaining crop productivity under unstable moisture conditions. Keywords: soil fertility, soil-plant system, long-term experiment, available nutrient reserve, clover, soybean Journal: Plant, Soil and Environment Number: 49320 Volume: preprint File-URL: http://pse.agriculturejournals.cz/artkey/pse-000004-9320.php File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/pse-000004-9320.txt Handle: RePEc:caa:jnlpse:v:preprint:id:305-2026-PSE