Reintroducing Flax (Linum usitatissimum L.) to the Mediterranean Basin: The Importance of Nitrogen Fertilization

Plants

Nikolaos Katsenios¹  Aspasia Efthimiadou¹  Evangelia L. Tigka¹  Charikleia Zisi²  Dimitrios Bilalis²  Alexandros Tataridas²  Stella Karydogianni²  Ioanna Kakabouki²  Ioannis Roussis²  Antigolena Folina²  Antonios Mavroeidis² 

[1] Institute of Soil and Water Resources, Department of Soil Science of Athens, Hellenic Agricultural Organization DEMETER, Sofokli Venizelou 1, 14123 Lykovrissi, Greece;Laboratory of Agronomy, Department of Crop Science, Agricultural University of Athens, 11855 Athens, Greece;

关键词: Accumulated growing-degree days (AGDDs);    flax;    nitrogen fertilization;    nitrogen indices;    Mediterranean basin;    climate change;   

DOI  :  10.3390/plants10091758

来源: DOAJ

【 摘 要 】

An increasing interest has been reported regarding the reintroduction of flax in the Mediterranean region. The aim of this present study was to evaluate the effects of nitrogen (N) fertilization on the performance of flax cv. Everest, under Mediterranean climate conditions. A two-year study was carried out in 2018–2019, in Western Greece. The experiment was set-up in a randomized complete block design with four replications and six treatments of different N fertilization rates (0, 20, 30, 40, 50, and 60 kg N ha⁻¹). Measurements included plant biomass, the leaf area index (LAI), the yield, and the Growth Degree Days (GDDs) required for full seed maturity. The N uptake of flax was also evaluated utilizing the Nitrogen Harvesting (NHI) and Nitrogen Utilization Efficiency (NUtE) indices. Although the highest fertilization rate (60N) increased the yield by 35.4% (2018) and 23.1% (2019), a GDDs and N indices assessment revealed that it noted the lowest efficiency and may lead to significant yield losses, as it significantly prolonged the crop cycle. On the contrary, even though fertilization rates of 20 and 30 kg N ha⁻¹ increased the yield only by 7% and 15% (on average), they were more efficient, and prolonged the crop cycle less (compared to 60N).

【 授权许可】

Unknown