English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

. Lack of real-time information on nutrient availability incultivated soils inherently leads to excess application of fertilizers inagriculture. As a result, nitrate, which is a soluble, stable, and mobilecomponent of fertilizers, leaches below the root zone through theunsaturated zone and eventually pollutes the groundwater and other relatedwater resources. Rising nitrate concentration in aquifers is recognized as aworldwide environmental problem that contributes to water scarcity. Thedevelopment of technologies for continuous in situ measurement of nitrateconcentration in soils is essential for optimizing fertilizer applicationand preventing water resource pollution by nitrate. Here we present aconceptual approach for a monitoring system that enables in situ andcontinuous measurement of nitrate concentration in soil. The monitoringsystem is based on absorbance spectroscopy techniques for directdetermination of nitrate concentration in soil porewater withoutpretreatment, such as filtration, dilution, or reagent supplementation. Anew analytical procedure was developed to improve measurement accuracy whileeliminating the typical measurement interference caused by soil dissolvedorganic carbon. The analytical procedure was tested at four field sites over2 years and proved to be an effective tool for nitrate analysis whendirectly applied on untreated soil solution samples. A soilnitrate-monitoring apparatus, combining specially designed optical flowcells with soil porewater-sampling units, enabled, for the first time,real-time continuous measurement of nitrate concentration in soils.Real-time, high-resolution measurement of nitrate concentration in the soilhas revealed the complex variations in soil nitrate concentrations inresponse to fertigation pattern. Such data are crucial for optimizingfertilizer application and reducing pollution potential of groundwater.

Real-time monitoring of nitrate in soils as a key for optimization of agricultural productivity and prevention of groundwater pollution