ORIGINAL RESEARCH article
Front. Sustain. Food Syst.
Sec. Crop Biology and Sustainability
Volume 9 - 2025 | doi: 10.3389/fsufs.2025.1641878
This article is part of the Research TopicCrop Responses and Adaptation Strategies Under Global Climate ChangeView all 3 articles
Irrigation, variety and year have more influence on organic potato than microbial inoculation -case study results of a two-year on-farm experiment
Provisionally accepted
Orsolya Papp1*
Tamás Kocsis2*Dániel Ganszky3Éva Borbélyné Hunyadi1László Mezőfi1Balázs Labus1
Nora Szigeti1Dóra Selmeczi1Ferenc Tóth1Geoffrey Darbon4
Dora Drexler1- 1Research Institute of Organic Agriculture (ÖMKi), Budapest, Hungary
- 2Hungarian University of Agriculture and Life Sciences, Budapest, Hungary
- 3Geonardo Environmental Technologies Ltd., Budapest, Hungary
- 4Plant Production Systems, Cultivation Techniques and Varieties in Arable Farming, Agroscope, Nyon, Switzerland
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Potato holds significant importance in human nutrition. However, climatic stress factors such as prolonged drought have increasingly challenged potato production in recent years. Various research efforts are underway to mitigate the adverse effects of abiotic stress in potato agrotechnology, including soil inoculation with beneficial microorganisms. Despite the encouraging results reported in the literature, there remains limited knowledge regarding the appropriate technology and microbial strains for field application, particularly in organic potato production. Therefore, a two-year study was conducted to evaluate the effects of Pseudomonas brassicacearum 3Re2-7, Trichoderma asperelloides A, Rhizophagus irregularis MUCL41833, and Paraburkholderia phytofirmans PsJN strains under two irrigation strategies (irrigated and rainfed) in an organic potato field, using two varieties. Concerning the effects of microbial inoculations, significant differences were observed only in plant stomatal conductance among all measured parameters: inoculation with T. asperelloides significantly decreased stomatal conductance in potato plants. For the other studied parameters (yield, incidence of tuber pathogens, starch and phosphorus content of tubers, SPAD values), the effects of variety, irrigation, and year had more importance than inoculation, whether strains were applied alone or in combination. The lack of significant inoculation effects may be attributed to open field environmental conditions, limitations of soil nutrient status, application methodology and resilience of the rich microbial communities associated with organic agriculture.1.
Keywords: Potato, Organic farming, Microbial inoculation, Pseudomonas, Trichoderma, Rhizophagus, Paraburkholderia, Stomatal conductance
Received: 05 Jun 2025; Accepted: 23 Jul 2025.
Copyright: © 2025 Papp, Kocsis, Ganszky, Hunyadi, Mezőfi, Labus, Szigeti, Selmeczi, Tóth, Darbon and Drexler. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Orsolya Papp, Research Institute of Organic Agriculture (ÖMKi), Budapest, Hungary
Tamás Kocsis, Hungarian University of Agriculture and Life Sciences, Budapest, Hungary
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