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Mapping Cabernet Franc vineyards by unmanned aerial vehicles (UAVs) for variability in vegetation indices, water status, and virus titer

Andrew G. Reynolds, Hyun-Suk Lee, Briann Dorin, Ralph Brown, Marilyne Jollineau, Adam Shemrock, Marnie Crombleholme, Emilie Jobin Poirier, Wei Zheng, Maxime Gasnier, Mehdi Shabanian, Baozhong Meng
2018 E3S Web of Conferences  
A second hypothesis was that titer of grapevine leafroll-associated virus (GLRaV) could be correlated spatially to NDVI and other spectral indices.  ...  To determine zonation, unmanned aerial vehicles (UAVs) with multispectral and thermal sensors were flown over six Cabernet Franc vineyard blocks in Ontario, Canada.  ...  in Spain, and Cabernet Sauvignon in Australia [18] .  ... 
doi:10.1051/e3sconf/20185002010 fatcat:6kwnhbxq5jg4hbbbu2kitppmc4

Leaf hyperspectral reflectance as a potential tool to detect diseases associated with vineyard decline

Amanda Heemann Junges, Marcus André Kurtz Almança, Thor Vinícius Martins Fajardo, Jorge Ricardo Ducati
2020 Tropical Plant Pathology  
grapevine leafroll-associated virus (GLRaV).  ...  For such, reflectance of leaves in either condition collected in a "Merlot" vineyard during three growing seasons was measured using a spectroradiometer.  ...  Among the viral diseases, the grapevine leafroll disease (GLD) is caused by some viruses known as grapevine leafroll-associated virus (GLRaV) of the Closteroviridae family, of which the GLRaV-3 is the  ... 
doi:10.1007/s40858-020-00387-0 fatcat:javb67fv5vcfljzgqe7z4r2y2m

Detection of Grapevine Leafroll-Associated Virus 1 and 3 in White and Red Grapevine Cultivars Using Hyperspectral Imaging

Nele Bendel, Anna Kicherer, Andreas Backhaus, Janine Köckerling, Michael Maixner, Elvira Bleser, Hans-Christian Klück, Udo Seiffert, Ralf T. Voegele, Reinhard Töpfer
2020 Remote Sensing  
To date, six grapevine leafroll-associated viruses (GLRaVs) are known as causal agents of the disease, of which GLRaV-1 and -3 induce the strongest symptoms.  ...  Ground-based hyperspectral imaging (400–2500 nm) was used in this study in order to identify white and red grapevine plants infected with GLRaV-1 or -3.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs12101693 fatcat:f2hgswty25hihbqwtdzujuqbeu

Detection of grapevine leaf stripe disease symptoms by hyperspectral sensor

2018 Phytopathologia Mediterranea  
of GLSD asymptomatic and symptomatic grapevine leaves using a hyperspectral sensor.  ...  Hyperspectral sensors can measure reflectance in a wide range of the electromagnetic spectrum.  ...  Acknowledgments The authors are grateful to the Marin family, owners of the studied vineyard.  ... 
doi:10.14601/phytopathol_mediterr-22862 doaj:07f12f3d9765471fbc0b8b5f6283bef2 fatcat:bbbdgtc2v5e7pdgnqs6s7hi2ie

Hyperspectral Imaging to Assess the Presence of Powdery Mildew (Erysiphe necator) in cv. Carignan Noir Grapevine Bunches

Pérez-Roncal, López-Maestresalas, Lopez-Molina, Jarén, Urrestarazu, Santesteban, Arazuri
2020 Agronomy  
In this study, the potential of hyperspectral imaging (HSI) technology to assess the presence of powdery mildew in grapevine bunches was evaluated.  ...  The obtained results suggested that HSI technology combined with chemometrics could be used for the detection of powdery mildew in black grapevine bunches.  ...  Coop for providing access to the bunch samples used in this study. Conflicts of Interest: The authors declare no conflicts of interest.  ... 
doi:10.3390/agronomy10010088 fatcat:hk4wdfqsevhlpogz37a7vymsd4

Detection of Two Different Grapevine Yellows in Vitis vinifera Using Hyperspectral Imaging

Nele Bendel, Andreas Backhaus, Anna Kicherer, Janine Köckerling, Michael Maixner, Barbara Jarausch, Sandra Biancu, Hans-Christian Klück, Udo Seiffert, Ralf T. Voegele, Reinhard Töpfer
2020 Remote Sensing  
Thus, hyperspectral imaging seems to be a promising approach for the detection of different GY.  ...  Therefore, hyperspectral imaging (400–2500 nm) was applied to identify phytoplasma-infected greenhouse plants and shoots collected in the field.  ...  The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.  ... 
doi:10.3390/rs12244151 fatcat:gqvuuefvdbgtvj236cyic2jofm

Abstracts of invited, oral and poster papers presented at the 16th Congress of the Mediterranean Phytopathological Union, April 4–8, 2022, in Limassol, Cyprus

Laura Mugnai
2022 Phytopathologia Mediterranea  
The 16th Congress of the Mediterranean Phytopathological Union (MPU2022) took place in Limassol, Cyprus from 4–8 April, 2022.  ...  Five special sessions in cutting edge subjects were organised. A special session was organised jointly with the Arab Society of Plant Protection.  ...  from different hosts and farming systems, in terms of agrochemical-inputs.  ... 
doi:10.36253/phyto-13613 fatcat:zb2wputc6nb67fartwmvkdvbf4

Abstracts of Presentations at the 2014 APS-CPS Joint Meeting

2014 Phytopathology  
Most SADs have 3 to 10 images.  ...  Grapevine red blotch-associated virus (GRBaV) is highly correlated with red blotch, a recently recognized disease of grapevines.  ... 
doi:10.1094/phyto-104-11-s3.1 pmid:25337637 fatcat:y5wn5ulgtbd4lowwlwnlh6rna4


(Call FP7-NMP-2009-LARGE-3).  ...  Collaborations The research project is developed in collaboration with the Department of Agricultural Engineering, University of Milan.  ...  Naidu et. al (2009) investigated the potential of using the leaf reflectance changes induced by grapevine leafroll-associated virus (GLRaV-3) as a diagnostic tool by measuring the VIS-NIR-MIR spectra  ... 
doi:10.13130/tirelli-paolo_phd2013-02-26 fatcat:7zv7zhgfyngvbmkbvqsjm27eca