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

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, a...

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Autores principales: Fernández, Victoria, Pimentel, Carlos, Bahamonde, Héctor Alejandro
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Agrarias
Aerosols
Agrochemicals
Calcium
Drops
Fertilizers
Foliar sprays
Hygroscopic
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119188
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-119188
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Aerosols
Agrochemicals
Calcium
Drops
Fertilizers
Foliar sprays
Hygroscopic
spellingShingle Ciencias Agrarias
Aerosols
Agrochemicals
Calcium
Drops
Fertilizers
Foliar sprays
Hygroscopic
Fernández, Victoria
Pimentel, Carlos
Bahamonde, Héctor Alejandro
Salt hydration and drop drying of two model calcium salts: implications for foliar nutrient absorption and deposition
topic_facet Ciencias Agrarias
Aerosols
Agrochemicals
Calcium
Drops
Fertilizers
Foliar sprays
Hygroscopic
description 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.
format Articulo
Articulo
author Fernández, Victoria
Pimentel, Carlos
Bahamonde, Héctor Alejandro
author_facet Fernández, Victoria
Pimentel, Carlos
Bahamonde, Héctor Alejandro
author_sort Fernández, Victoria
title Salt hydration and drop drying of two model calcium salts: implications for foliar nutrient absorption and deposition
title_short Salt hydration and drop drying of two model calcium salts: implications for foliar nutrient absorption and deposition
title_full Salt hydration and drop drying of two model calcium salts: implications for foliar nutrient absorption and deposition
title_fullStr Salt hydration and drop drying of two model calcium salts: implications for foliar nutrient absorption and deposition
title_full_unstemmed Salt hydration and drop drying of two model calcium salts: implications for foliar nutrient absorption and deposition
title_sort salt hydration and drop drying of two model calcium salts: implications for foliar nutrient absorption and deposition
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/119188
work_keys_str_mv AT fernandezvictoria salthydrationanddropdryingoftwomodelcalciumsaltsimplicationsforfoliarnutrientabsorptionanddeposition
AT pimentelcarlos salthydrationanddropdryingoftwomodelcalciumsaltsimplicationsforfoliarnutrientabsorptionanddeposition
AT bahamondehectoralejandro salthydrationanddropdryingoftwomodelcalciumsaltsimplicationsforfoliarnutrientabsorptionanddeposition
bdutipo_str Repositorios
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