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  • Accueil
  • Capteurs
    • DUALEX® SCIENTIFIC
    • MULTIPLEX® RESEARCH
    • MULTIPLEX® 330
    • Témoignages
    • Informations techniques
    • Publications
  • Services vigne
    • FA-WOOD™
    • FA-VIGOR™
    • FA-VENDANGE™
    • Presse agricole
    • Témoignages
  • Services blé
    • Protéine
    • Fertilisation
    • Presse agricole
  • Société
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DUALEX® SCIENTIFIC

DUALEX® SCIENTIFIC

Le capteur DUALEX® SCIENTIFIC mesure le contenu en chlorophylle et le statut azoté ainsi que deux indices liés aux flavonols et aux anthocyanes* de la feuille. Cette pince effectue des mesures instantanées et non-destructives. Son GPS interne permet la géolocalisation des parcelles étudiées.

Sont mesurés :

  • le contenu surfacique en chlorophylle (µg/cm²) ;
  • l’indice des flavonols épidermaux ;
  • le statut azoté NBI (Nitrogen Balance Index) ;
  • l’indice des anthocyanes épidermaux *.

 

Ce capteur est utilisé pour diverses applications, particulièrement en écophysiologie :

  • Etudes physiologiques ;
  • Etudes génétiques ;
  • Etude de la phénologie ;
  • Sélection des plantes ;
  • Phénotypage ;
  • Agronomie.

 

Pour toute étude nécessitant de connaître l’indice de chlorophylle :

  • Chlorose nutritionnelle ;
  • Chlorose induite par des maladies ;
  • Photosynthèse potentielle ;
  • Sénescence foliaire.

 

L’indice des flavonols :

  • Protection UV ;
  • Environnement lumineux des feuilles ;
  • Accumulation phénolique.

 

L’indice des anthocyanes* :

  • Stress thermique ;
  • Lumière environnante ;
  • Sénescence foliaire ;
  • Sélection de plantes mutantes.

 

(* l’indice d’anthocyanes est disponible uniquement sur le DUALEX® SCIENTIFIC+)

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DUALEX-SCIENTIFIC-chlorophylle-mètre

Témoignages clients

  • WARSAW UNIVERSITY OF LIFE SCIENCES Hazem KALAJI
    Plant Physiologist Warsaw University of Life Sciences (SGGW), Poland

    “My research group and I at Warsaw University of Life Sciences have been using the DUALEX® and MULTIPLEX® sensors to detect chlorophyll, anthocyanins and flavonols in green parts and photosynthetic organisms of various reference crops the past two years. I can say that FORCE-A portable fluorometers are much more reliable and accurate than the conventional near-infrared portable sensors currently used in Agriculture and Plant Science industries.

    Voir plus

    I recommend the DUALEX SCIENTIFIC™ for its ability to calculate crop nitrogen status and foliar anthocyanins, very useful for phenotyping applications. I also recommend the MULTIPLEX RESEARCH™ sensor for its capabilities to perform phenotyping applications (nitrogen status) and monitor phenolic maturity (grapevine, pome and stone fruits). I really appreciate FORCE-A team for its availability and technical support when I have questions or protocol issues related to their technology. Due to the multiple indices provided by the systems and the exchanges with the company, I was able to conduct very well my Precisions Agriculture projects.”

    Réduire

  • CRA-W Jean-Pierre GOFFART
    Crops Production Systems Unit, Productions and sectors Department, Walloon Agricultural Research Centre (CRA-W) Gembloux, Belgium

    “We have been using the DUALEX® and MULTIPLEX® sensors for the evaluation of potato crop nitrogen status with potential indicators based on leaf flavonoids content, since 2008. We value the technical and analytical skills of the FORCE-A team and recommend their unique fluorescence technology that monitors how a crop is responding to its environment. Most of the other sensors that are commonly used in our Research Center to monitor nitrogen use are only looking at one parameter (i.e. leaf chlorophyll contents) based on transmittance or reflectance readings.

    Voir plus


    The FORCE-A fluorescence sensors allow us to use the crop to integrate other sensitive parameters to tell us when it needs nitrogen. Telling when a crop really needs nitrogen at very early growth stages has always been a grey area; since monitoring our experiment field crops in Belgium, we have found that most of the technologies previously used were not so accurate. We are in an era of increasing demand on input saving, and the FORCE-A fluorescence sensors show real potentialities to help us to monitor the nitrogen inputs with higher confidence. Furthermore, the MULTIPLEX 330™ sensor, FORCE-A latest non-contact fluorometer, shows a great potential for the early pathogen detection of potato crop.”

    Réduire

  • UNIVERSIDAD DE LA RIOJA Javier TARDÁGUILA & Maria Paz DIAGO
    Prof. Javier Tardáguila and Mrs Maria Paz Diago, Department of Agriculture and Food Science, University of La Rioja

    “We, at the University of La Rioja have been working with FORCE-A for over four years. We use their MULTIPLEX® fluorescence sensor for the characterization of grape phenols and anthocyanins. Our studies in commercial vineyards have shown very promising results, with MULTIPLEX®’s ability to non-destructively monitor the accumulation of anthocyanins in the grape skins over the ripening period. The fast and non-destructive nature of the sensor allowed us to this temporal monitoring as well as to characterize the spatial variability of grape anthocyanins and phenols.

    Voir plus


    As a result it was possible to build maps of anthocyanin and phenol contents and to establish homogeneous zones within the vineyard. Finally, something which is totally revolutionary, as we could satisfactorily predict the final red wine color and phenolic content from the measurements taken in the field with the MULTIPLEX® sensor. We also used the DUALEX®/MULTIPLEX® devices on grapevine leaves to monitor and characterize the vigour differences in a vineyard. MULTIPLEX® provides a dozen indices as output compared to other sensors that provide only one or two indices. Fluorescence based active sensing in field is new and has tremendous potential. We value the technical and analytical skills of the FORCE-A team and believe their unique fluorescence technology is a quantum leap in crop sensing. Precision vineyard management is challenging. Technological innovations like FORCE-A’s MULTIPLEX® will help meet this challenge of producing better in an efficient, profitable and sustainable manner.”

    Réduire

  • UNIVERSIDAD DE ALMERÍA Rodney THOMPSON
    Dr. Rodney Thompson, Department of Agronomy, University of Almería Almería, Spain

    “Our research group has used DUALEX®/ MULTIPLEX® sensors of FORCE-A to detect differences in N status of tomato and muskmelon crops. These sensors have been able to consistently detect differences between treatments receiving different rates of N. Two of the most notable aspects of the results were (a) the clear consistent differences between treatments with excessive N, and (b) the early detection of these differences. Much of the focus on the use of optical sensors for N management has been on detecting N deficiencies.

    Voir plus


    However, in commercial farming, the problem is often excessive N application. In intensive vegetable production systems, such as in south-east Spain where N is frequently applied in small amounts through high frequency drip irrigation and fertigation, early detection of excess N will permit subsequent corrections. We consider that the technology of the DUALEX®/ MULTIPLEX® sensors is a very promising approach for the development of improved crop N management using optical sensors. I would like to add that FORCE-A has been an easy company to work with; they are responsive and helpful; in general they appear to be interested in establishing effective working partnerships with users of their equipment.”

    Réduire

  • UNIVERSITÄT BONN Maurício HUNSCHE
    PD Dr. Maurício Hunsche, Horticultural Science Group (chair: Prof. Dr. Georg Noga), Faculty of Agriculture, University of Bonn Bonn, Germany

    “In our research group (Horticultural Sciences, University of Bonn, Germany) we use both the MULTIPLEX® and DUALEX® units to sense the physiological response of plants to biotic and abiotic stresses. Of particular interest is the physiological adaptation of field crops (e.g., barley and sugar beet) and horticultural crops (e.g., tomato, sweet pepper, apple trees, medicinal plants) to water shortage. In addition, we look at the relevance of other factors such as mineral nutrition as well as light intensity and light quality for the plant physiology and product quality.

    Voir plus


    In this frame, our overall aim is to estimate the impact of environmental constrains on the fitness of the plants and their adaptation to the stressful situations (e.g., degradation of chlorophyll, accumulation of secondary metabolites) leading to changes in plant performance and product quality. The big number of parameters provided by the MULTIPLEX®/DUALEX® enables a huge flexibility for their use in basic and applied research in a broad range of experimental situations. Further, the compactness and robustness of the equipments open promising perspectives for many in-field applications e.g., in the scope of stress physiology studies, field-phenotyping and precision agriculture. Finally, the fast and professional technical support provided by the FORCE-A team is exemplar; we know the company and use their instruments since 2009, and we only made positive experiences. In our group, the MULTIPLEX® and DUALEX® units assumed a central role for the fast and in situ evaluation of the physiological status of plants, leaves and fruits.”

    Réduire

  • VAN DEN BORNE AARDAPPELEN Jacob VAN DEN BORNE
    Reusel, the Netherlands

    Mr. Jacob van den Borne, owner of VAN DEN BORNE AARDAPPELEN (potato, sugar beet and corn), uses and recommends the DUALEX SCIENTIFIC™ to monitor the nitrogen of potato with regard to precision agriculture.

  • TIMAC AGRO Mustapha ARKOUN
    R&D department - Roullier Group Dinard, France

    My research topics within the R&D of the Roullier group (Timac-Agro International) are mainly focused on plant nutrition with a focus on nitrogen and sulfur metabolism of field crops.

  • IFAC Giovanni AGATI
    IFAC - CNR Sesto Fiorentino, Italy

    “Since 2009, the « Nello Carrara » Institute of Applied Physics of the Italian National Council of Research established a Scientific Collaboration Agreement with FORCE-A to perform common research activities related to the use of non-invasive optical sensors, and the analysis of the obtained data, for application in agriculture and food quality control. However, my collaboration with some of the founders of FORCE-A company started many years ago, so I can say I saw FORCE-A be born and followed it development.

    Voir plus


    In 2006, we used one of the first prototypes of the DUALEX® device to evaluate flavonols on winegrape leaves under sun and shade and related their higher concentration in sun-exposed leaves to a higher resistant to fungi attacks. Then, we started a 5-year long experience in the use of the MULTIPLEX® sensor to evaluate grape phenolic maturity in the vineyard on different cultivars and different locations throughout Italy (Sicily included). During these years, FORCE-A sensors have been significantly improved becoming quite adequate to many different applications. Besides winegrape, we applied the MULTIPLEX® for detecting leaf nitrogen in turfgrass in order to control precisely fertilization rates, and quality-related compounds (chlorophyll and flavonols) in apples and kiwifruits. Lately, we focused on the MULTIPLEX® driving the mapping of anthocyanin grape content in the vineyards to make phenolic maturity zoning for the production of top quality wine by differentiated harvest.”

    Réduire

  • UNIVERSITÉ DE CAEN Jean-Christophe AVICE
    UMR INRA UCBN 950 EVA, CMAbio - Université de Caen Basse-Normandie Caen, France

    “I have been using successfully the DUALEX SCIENTIFIC™ and MULTIPLEX RESEARCH™ for 5 years in the framework of 2 national research programs (ANR – GENERGY and Investissements d’Avenir – RAPSODYN) focused on the determination of N status in oilseed rape (Brassica napus L.). The optical sensor was actually used in order to develop a rapid, non-destructive and relevant method for determination of N status at the leaf, plant or canopy levels.”

    Voir plus

    “I have been using successfully the DUALEX SCIENTIFIC™ and MULTIPLEX RESEARCH™ for 5 years in the framework of 2 national research programs (ANR – GENERGY and Investissements d’Avenir – RAPSODYN) focused on the determination of N status in oilseed rape (Brassica napus L.). The optical sensor was actually used in order to develop a rapid, non-destructive and relevant method for determination of N status at the leaf, plant or canopy levels.”

    Réduire

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