Linking soil N dynamics and plant N uptake by means of sensor support

Argento, Francesco; Liebisch, Frank; Simmler, Michael; Ringger, Cecil; Hatt, M.; Walter, Achim; Anken, Thomas

doi:10.1016/j.eja.2022.126462

Cited by 5 publications

(5 citation statements)

References 48 publications

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“…Precision farming techniques were recognised by experts within this stocktake study as being important in future agricultural management. Precision farming techniques are continuously developing and offer rapid diagnosis of crop N status, for example, reflection measurement by crop sensing and/or soil N status and variable rate fertiliser applications (Argento et al, 2022; Higgins et al, 2019; Spiegel et al, 2020). Further promising technologies include targeted placement of fertilisers near plant roots along with better timing and dosage based on crop/soil indicators.…”

Section: Discussionmentioning

confidence: 99%

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Stocktake study of current fertilisation recommendations across Europe and discussion towards a more harmonised approach

Higgins,

Keesstra,

Kadziuliene

et al. 2023

European J Soil Science

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The European Commission has set targets for a reduction in nutrient losses by at least 50% and a reduction in fertiliser use by at least 20% by 2030, while ensuring no deterioration in soil fertility. Within the mandate of the European Joint Programme EJP Soil “Towards climate‐smart sustainable management of agricultural soils”, the objective of this study was to assess current fertilisation practices across Europe and discuss the potential for harmonisation of fertilisation methodologies as a strategy to reduce nutrient loss and overall fertiliser use. A stocktake study of current methods of delivering fertilisation advice took place across 23 European countries. The stocktake was in the form of a questionnaire, comprising 46 questions. Information was gathered on a large range of factors, including soil analysis methods, along with soil, crop and climatic factors taken into consideration within fertilisation calculations. The questionnaire was completed by experts, who are involved in compiling fertilisation recommendations within their country. Substantial differences exist in the content, format and delivery of fertilisation guidelines across Europe. The barriers, constraints and potential benefits of a harmonised approach to fertilisation across Europe are discussed. The general consensus from all participating countries was that harmonisation of fertilisation guidelines should be increased, but it was unclear in what format this could be achieved. Shared learning in the delivery and format of fertilisation guidelines and mechanisms to adhere to environmental legislation were viewed as being beneficial. However, it would be very difficult, if not impossible, to harmonise all soil test data and fertilisation methodologies at EU‐level due to diverse soil types and agro‐ecosystem influences. Nevertheless, increased future collaboration especially between neighbouring countries within the same environmental zone was seen as potentially very beneficial. This study is unique in providing current detail on fertilisation practices across European countries in a side‐by‐side comparison. The gathered data can provide a baseline for the development of scientifically based EU policy targets for nutrient loss and soil fertility evaluation.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

“…Crops are often fertilised above recommended levels to avoid the risk of yield loss (Steinfurth et al, 2022). However, improving fertilisation techniques to better match nutrient requirements with crop demand would improve overall nutrient use efficiency, particularly N use efficiency (Argento et al, 2022; Higgins et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Stocktake study of current fertilisation recommendations across Europe and discussion towards a more harmonised approach

Higgins,

Keesstra,

Kadziuliene

et al. 2023

European J Soil Science

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“…This technique has been used to detect different types of stress in all sorts of different crops. It has proven to be particularly useful at determining the nitrogen concentration and the concentration of other nutrients of crops, including lettuce [9], maize [10] [11], wheat [12], cucumber [13] and apple [14]. Infection by bacteria, fungi and viruses can also change the optical properties of a crop and so the technique has been used to detect infection with several of these pathogens.…”

Section: Hyperspectral Data and Thinking Machines For A Utopian Agric...mentioning

confidence: 99%

“…The hyperspectral profiles of vegetation have a very characteristic shape with high absorption in the visible region (380-700 nm) and strong reflectance in the near infrared region (700 nm onwards). Water in plant tissue absorbs infrared light at around 1400 nm and 1800 nm [12]. When trying to detect plant stress, the aim is to find the differences between the spectral profiles of healthy and stressed plants, something which can usually only be done through sophisticated data analysis.…”

Section: Hyperspectral Data and Thinking Machines For A Utopian Agric...mentioning

confidence: 99%

Hyperspectral Sensing and Plant Stress

Cullinan

2023

Laimburg Journal

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Light and electromagnetic radiation possess properties that allow it to interact with matter. By using hyperspectral technology that measures electromagnetic radiation and therefore its interaction with matter, we can infer things about the quality of the matter. This technique can be and is being applied in the field of agriculture. This article provides an introduction to electromagnetic radiation, measuring it with hyperspectral technology and how the technique is used in agriculture for the detection of plant stress and the consequent sustainable management thereof. Importantly, it is intended to be entertaining and easy-to-read, particularly for those who do not have extensive backgrounds in the fields of physics and remote sensing.

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“…Most importantly, the lack of a soil nitrate (NO 3 − ) measurement system is a major impediment to improving precision agriculture technology; the development of real-time or near real-time measurement systems could facilitate more appropriate decision-making in the agriculture industry [ 5 ]. Although the majority of studies have utilised laboratory and field scale soil NO 3 − testing of soil samples and not real-time sensing in-situ, one study in North America by Zhu et al has used solid-state NO 3 − sensing for sixty days in a field setting with wired sensors [ 6 , 7 , 8 , 9 ]. None of these have reported validated NO 3 − sensors, assessing N sensor functionality for improving N-fertilisation, assimilation, and transformation in agricultural soil.…”

Section: Introductionmentioning

confidence: 99%

Development of a LoRaWAN IoT Node with Ion-Selective Electrode Soil Nitrate Sensors for Precision Agriculture

Bristow

Rengaraj²,

Chadwick³

et al. 2022

Sensors

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Crop productivity is highly dependent on the availability of soluble nitrogen (N), e.g. nitrate, in soil. When N levels are low, fertilisers are applied to replenish the soil’s reserves. Typically the timing of these applications is based on paper-based guidance and sensor-based measurements of canopy greenness, which provides an indirect measure of soil N status. However this approach often means that N fertiliser is applied inappropriately or too late, resulting in excess N being lost to the environment, or too little N to meet crop demand. To promote greater N use efficiency and improve agricultural sustainability, we developed an Internet of Things (IoT) approach for the real-time measurement of soil nitrate levels using ion-selective membrane sensors in combination with digital soil moisture probes. The node incorporates state-of-the-art IoT connectivity using a LoRaWAN transceiver. The sensing platform can transfer real-time data via a cloud-connected gateway for processing and storage. In summary, we present a validated soil sensor system for real-time monitoring of soil nitrate concentrations, which can support fertiliser management decisions, improve N use efficiency and reduce N losses to the environment.

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Linking soil N dynamics and plant N uptake by means of sensor support

Cited by 5 publications

References 48 publications

Stocktake study of current fertilisation recommendations across Europe and discussion towards a more harmonised approach

Stocktake study of current fertilisation recommendations across Europe and discussion towards a more harmonised approach

Hyperspectral Sensing and Plant Stress

Development of a LoRaWAN IoT Node with Ion-Selective Electrode Soil Nitrate Sensors for Precision Agriculture

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