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Título: | Applying Biostimulants to Combat Water Deficit in Crop Plants: Research and Debate |
Autor: | Jiménez Arias, David CSIC ORCID; Hernándiz, Alba E.; Morales-Sierra, Sarai; García-García, Ana L. CSIC ORCID; García-Machado, Francisco J. CSIC; Luis Jorge, Juan Cristo; Borges, Andrés A. CSIC ORCID | Palabras clave: | Water deficit biostimulants pyroglutamic acid glycine betaine Climate change |
Fecha de publicación: | 25-feb-2022 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Agronomy 12(3), 571: 1-12 (2022) | Resumen: | Climate change has increased the severity of drought episodes by further reducing precipitation in vulnerable zones. Drought induces a substantial decrease in agricultural water, reducing crop yields. Consequently, addressing water consumption can increase farmers’ profits. This work describes lab-to-field research in Zea mays, using two biostimulants: glycine betaine (GB) and Lpyroglutamic acid (PG). The biostimulant optimal dosages were selected using a hydroponic system with 20% polyethylene glycol and nursery experiments under water-deficit irrigation. The established dosages were evaluated in field trials in which irrigation was reduced by 20%. Laboratory biostimulant optimisation showed in stressed treated seedlings (GB 0.1 mM; PG 1 mM) an increased dry weight, relative growth rate and water use efficiency, reducing seedling growth loss between 65 and 85%, respectively. Field trials using a GB-optimised dosage showed an increase in plants’ growth, grain yield and flour Ca content. In addition, grain flour carbohydrate content and protein remained similar to control well-watered plants. Finally, the economic aspects of biostimulant treatments, water consumption, water sources (ground vs. desalinated) and grain biomass were addressed. Overall, GB treatment demonstrated to be a valuable tool to reduce water consumption and improve farmers’ earnings. | Versión del editor: | https://doi.org/10.3390/agronomy12030571 | URI: | http://hdl.handle.net/10261/262115 | DOI: | 10.3390/agronomy12030571 | E-ISSN: | 2073-4395 |
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Applying-Jimenez-Arias_et_al-2022-Agronomy.pdf | 1,36 MB | Adobe PDF | Visualizar/Abrir |
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