Osvalde Anita, Karlsons Andis, Cekstere Gunta, Āboliņa Laura
Institute of Biology, University of Latvia, LV-1004 Rīga, Latvia.
Plants (Basel). 2023 Feb 19;12(4):945. doi: 10.3390/plants12040945.
The present study was carried out to evaluate the leaf nutrient status of commercially grown strawberries in Latvia during 2014-2022. The results of N, P, K, Ca, Mg, S, Fe, Mn, Zn, Cu, Mo and B in 200 strawberry leaf samples from different strawberry-producing farms were analysed over three periods: 2014-2016, 2017-2019, and 2020-2022. According to leaf analyses, plant fertilization was only partly well managed by the growers. During the research period, strawberries in Latvia were generally sufficiently supplied with N, P, K, Mg, Fe, Mn, Mo, and B, while the level of Ca, S, Zn, and Cu was considered low. The deficiency of these nutrients was characteristic for more than 50% of the samples. Since Ca, S, Zn, and Cu are essential for berry formation and quality and contribute to stress resistance; their deficiency could be one of the limiting factors for strawberry yield. The significant positive correlations found between nutrients, including deficient ones, confirmed their close relationship in the uptake process and the importance of sufficient supply. The results clearly indicated that fertilization could currently be an issue that limits the strawberry harvest in Latvia, and adequate provisions of Ca, S, Zn, and B should be the main focus.
本研究旨在评估2014 - 2022年拉脱维亚商业化种植草莓的叶片营养状况。对来自不同草莓种植农场的200个草莓叶片样本中的氮、磷、钾、钙、镁、硫、铁、锰、锌、铜、钼和硼进行了三个时期的分析：2014 - 2016年、2017 - 2019年和2020 - 2022年。根据叶片分析结果，种植者对植物施肥的管理仅部分良好。在研究期间，拉脱维亚的草莓总体上氮、磷、钾、镁、铁、锰、钼和硼供应充足，而钙、硫、锌和铜的水平被认为较低。超过50%的样本存在这些养分缺乏的情况。由于钙、硫、锌和铜对果实形成和品质至关重要，并有助于抗逆性，它们的缺乏可能是草莓产量的限制因素之一。包括缺乏的养分在内的养分之间发现的显著正相关证实了它们在吸收过程中的密切关系以及充足供应的重要性。结果清楚地表明，施肥目前可能是限制拉脱维亚草莓收成的一个问题，充分供应钙、硫、锌和硼应成为主要关注点。
