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. 2021 May 5;12:664682. doi: 10.3389/fpls.2021.664682

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Copyright © 2021 Goñi, Łangowski, Feeney, Quille and O’Connell.

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) and the copyright owner(s) 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.

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Effect of PSI-362 treatment applied by foliar spray or coated with CAN + S fertilizer on plant biomass and NUE of winter barley (cv. Towers). A pot trial was performed to evaluate if the application mode of PSI-362 (foliar spray or coated with N mineral fertilizer) affected differently to barley growth and compared with an untreated control. Fertilizer (CAN + S) and PSI-362 biostimulant were added to plants at 2–3 leaf stage (GS12–13) at the same time. The dose of PSI-362 applied by foliar spray or coating was exactly the same and control plants were sprayed with distilled water. The phenotypical assessment was performed 14 days after fertilizer/PSI-362 treatment application. Means followed by different small letter within the same row indicate significant differences between treatments based on one-way ANOVA Tukey’s HSD test at p ≤ 0.05. Number of biological replicates (plant biomass, n = 60; NUE, n = 3).