@misc{10481/108194,
year = {2025},
month = {11},
url = {https://hdl.handle.net/10481/108194},
abstract = {In recent decades, the use of biostimulants has increased with the aim of creating an
alternative to the use of chemical fertilizers and achieving sustainable agriculture. In this
study, sunflower plants (Helianthus annuus L. cv. neoma) were grown under controlled
conditions, and four trigonelline-rich extracts were applied as biostimulants through
root and foliar applications. The plant growth parameters, nutrient concentrations, root
metabolic activity, and nutrient use efficiency were evaluated. The results showed that
the foliar application of extract 4 significantly improved the aboveground biomass and
leaf area compared with the control treatments, with values of 44.30 g FW and 680.22 cm2
,
respectively. Moreover, this extract enhanced nutrient accumulation. Meanwhile, foliar
application of extract 3 improved macronutrient and micronutrient concentrations, as in
the case of phosphorus, which increased by 74.2%, and iron, which increased by 107.3%.
Root applications of extracts 3 and 4 increased apparent nutrient recovery, whereas foliar
applications of extracts 3 and 4 improved internal nutrient use and productivity indices.
Overall, the treatments showed no phytotoxicity and promoted growth, nutrient absorption,
and nutrient use efficiency, with the best results observed in foliar treatments with high
trigonelline content. These findings indicate that biostimulants with trigonelline-rich
extracts could improve crop yield, reduce the use of fertilizer, and contribute to more
sustainable agricultural systems.},
organization = {PAI program (Plan Andaluz de Investigación, Grupo de
Investigación AGR282)},
publisher = {MDPI},
keywords = {Trigonelline},
keywords = {Biostimulants},
keywords = {Nutrient use efficiency},
title = {Ionomic Profile and Nutrient Use Efficiency in Sunflower Plants Treated with Plant-Derived Biostimulant Rich in Trigonelline},
doi = {10.3390/agronomy15112556},
author = {Izquierdo Ramos, María José and Atero Calvo, Santiago and Navarro Morillo, Iván and Pérez-Millán, Rafael and Blasco León, Begoña},
}