ABSTRACT.- The practical value of portable hand-held ion selective electrode sensors (ISE) for on-farm [NO3-] measurement to assist with crop N management of vegetable crops has been demonstrated in numerous previous studies. They provide rapid, in-situ measurement of the nitrate concentration ([NO3-]) in nutrient and soil solutions, and in petiole sap. Sample temperatures, for on-farm measurements, vary appreciably. This study evaluated the effects of sample temperature on [NO3-] measurement using two different models of a commonly used, commercially available, portable ISE meter.

Esta publicación constituye un micro manual en materia alimentaria, y fundamentalmente en lo referente a frutas y verduras Las frutas y las verduras son una parte fundamental de nuestra alimentación. Esta publicación tiene por finalidad revalorizar estos alimentos, derribar mitos que muchas veces hacen que no los seleccionemos como parte de nuestra alimentación, y proponer ideas para motivarnos a consumirlos.

ABSTRACT.- Lemons are a relevant agricultural commodity in Uruguay, mainly exported for fresh consumption. Food eco-labels are on the rise worldwide as consumers and authorities are increasingly demanding them. However, there is a lack of scientific studies estimating the environmental impacts of Uruguayan citrus production. This study aims to assess the environmental performance of lemon production in Uruguay taking into account inter-seasonal variability by applying the Life Cycle Assessment (LCA) methodology and following the Environmental Product Declarations (EPDs) guidelines.

ABSTRACT.- Lemons are a relevant agricultural commodity in Uruguay, mainly exported for fresh consumption. Food eco-labels are on the rise worldwide as consumers and authorities are increasingly demanding them. However, there is a lack of scientific studies estimating the environmental impacts of Uruguayan citrus production. This study aims to assess the environmental performance of lemon production in Uruguay taking into account inter-seasonal variability by applying the Life Cycle Assessment (LCA) methodology and following the Environmental Product Declarations (EPDs) guidelines.