Salt hydration and drop drying of two model calcium salts: Implications for foliar nutrient absorption and deposition

Fernández Fernández, Victoria and Pimentel, Carlos and Bahamonde, Héctor A. (2020). Salt hydration and drop drying of two model calcium salts: Implications for foliar nutrient absorption and deposition. "Journal of Plant Nutrition And Soil Science" ; https://doi.org/10.1002/jpln.202000168.

Description

Title: Salt hydration and drop drying of two model calcium salts: Implications for foliar nutrient absorption and deposition
Author/s:
  • Fernández Fernández, Victoria
  • Pimentel, Carlos
  • Bahamonde, Héctor A.
Item Type: Article
Título de Revista/Publicación: Journal of Plant Nutrition And Soil Science
Date: 9 August 2020
Subjects:
Freetext Keywords: aerosols; agrochemicals; calcium; drops; fertilizers; foliar sprays; hygroscopic
Faculty: E.T.S.I. Montes, Forestal y del Medio Natural (UPM)
Department: Sistemas y Recursos Naturales
UPM's Research Group: Grupo de Genética, Fisiología e Historia Forestal
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview

Abstract

Background: Hygroscopic salts are often applied as foliar fertilizers and calcium (Ca) salts have been used as model for cuticular permeability studies, with focus on their Point of Deliquescence (POD). Aim: This study was aimed at characterizing water sorption and desorption processes at 20, 30, and 40°C temperature (T), of two model Ca salts commonly used as foliar sprays. Methods: Trials were developed with pure Ca‐chloride and Ca‐nitrate salts in addition to 2 M and 150 mM Ca solutions. Salts were analyzed by Dynamic Vapour Sorption (DVS) and climate chamber experiments. Results: For both Ca salts, water sorption and desorption processes followed hysteresis curves which varied with T. Salt POD was T‐dependent and generally decreased with increasing T. For both Ca salts, the process of efflorescence began at or below 10% RH, at a certain level of water desorption Ca‐salts becoming highly concentrated solutions (HCS). Conclusions: Owing to the low point of efflorescence (POE) of both salts, drops of Ca‐chloride and Ca‐nitrate supplied as foliar sprays will not fully dry under normal RH and T conditions in most world areas. Both Ca salts have a similarly high foliar penetration potential despite their different POD. The significance of the results for the potential absorption of foliar fertilizers and salts by the foliage is discussed under an agronomic and eco‐physiological viewpoint.

More information

Item ID: 63510
DC Identifier: http://oa.upm.es/63510/
OAI Identifier: oai:oa.upm.es:63510
DOI: 10.1002/jpln.202000168
Official URL: https://onlinelibrary.wiley.com/doi/full/10.1002/jpln.202000168
Deposited by: Victoria Fernández
Deposited on: 31 Aug 2020 07:04
Last Modified: 31 Aug 2020 07:04
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM