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13 results on '"Gálvez, Amparo"'

5. The Interaction between Hydromulching and Arbuscular Mycorrhiza Improves Escarole Growth and Productivity by Regulating Nutrient Uptake and Hormonal Balance

Author

Ministerio de Ciencia e Innovación (España), Romero-Muñoz, Miriam, Gálvez, Amparo, Martínez-Melgarejo, Purificación A., Piñero, María Carmen, del Amor, Francisco M., Albacete, Alfonso, López-Marín, Josefa, Ministerio de Ciencia e Innovación (España), Romero-Muñoz, Miriam, Gálvez, Amparo, Martínez-Melgarejo, Purificación A., Piñero, María Carmen, del Amor, Francisco M., Albacete, Alfonso, and López-Marín, Josefa

Abstract

To improve water and nutrient use efficiencies some strategies have been proposed, such as the use of mulching techniques or arbuscular mycorrhizal fungi (AMF) inoculation. To gain insights into the interaction between the use of hydromulch and AMF inoculation on plant growth and productivity, escarole plants (Cichorium endivia, L.) were inoculated with the AMF Rhizophagus irregularis and grown with non-inoculated plants under different soil cover treatments: ecological hydromulching based on the substrate of mushroom cultivation (MS), low-density black polyethylene (PE), and non-covered soil (BS). AMF inoculation or the use of mulching alone, but especially their interaction, increased the plant growth. The growth improvement observed in AMF-inoculated escarole plants grown under hydromulching conditions was mainly associated with the upgrading of nitrogen and phosphorous use efficiency through the regulation of the hormonal balance. Both hydromulching and AMF inoculation were found to increase the active gibberellins (GAs) and cytokinins (CKs), resulting in a positive correlation between these hormones and the growth-related parameters. In contrast, the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) and abscisic acid (ABA) decreased in AMF-inoculated plants and especially in those grown with the MS treatment. This study demonstrates that there exists a positive interaction between AMF and hydromulching which enhances the growth of escarole plants by improving nutrient use efficiency and hormonal balance.

Published
2022

12. The use of hydromulching increases yield and quality of drought-stressed artichokes (Cynara cardunculussubsp. scolymusL. (Heigi)) by improving soil properties and plant hormone homeostasis

Author

Romero-Muñoz, Miriam, Gálvez, Amparo, Martínez-Melgarejo, Purificación A., del Amor, Francisco M., Albacete, Alfonso, and López-Marín, Josefa

Abstract

•Hydromulching has been evaluated as a sustainable alternative to plastic mulching under water stress conditions.•Hydromulching improved soil physical-chemical characteristics and water status of stressed artichoke plants.•A better water status resulted in improved yield and the physical quality of artichoke heads while maintaining their chemical and nutritional quality over bare soil.•The crosstalk of cytokinins with abscisic acid and the ethylene precursor regulates adaptive responses such as sugar osmoregulation in artichoke heads under drought stress.

Published
2024
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13. The Financial Valuation Risk in Pepper Production: The Use of Decoupled Net Present Value.

Author

López-Marín, Josefa, Gálvez, Amparo, del Amor, Francisco M., and Brotons, Jose M.

Subjects
*NET present value, *FINANCIAL risk, *DISCOUNTED cash flow, *INTEREST rates, *WATER quality, *PEPPERS
Abstract

Greenhouse peppers are one of the most important crops globally. However, as in any production activity, especially agricultural, they are subject to important risk factors such as price fluctuations, pests, or the use of bad quality water. This article aims to evaluate the viability of these types of crops by using discounted cash flows. Risk evaluation has been carried out through the analysis of pepper plantations for 2016 and 2017. The traditional application of this tool has significant limitations, such as the discount rate to be used or the estimation of future cash flows. However, by using discount functions that decrease over time in combination with decoupled net present value, these limitations are expected to improve. The use of decoupled net present value has permitted an increase in the accuracy and quantification of risks, isolating the main risks such as price drops (EUR 3720 ha−1 year−1) and structural risks (EUR 1622 € ha−1 year−1). The use of decreasing discount functions has permitted a more realistic investment estimation. Finally, the sensitivity analysis shows that decoupled net present value (DNPV) is little affected by changes in interest rates in contrast to traditional net present value (NPV). [ABSTRACT FROM AUTHOR]

Published
2021
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