Terroir 2020 banner
IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2020 9 History and innovation of terroir 9 Can the satellite image resolution be improved to support precision agriculture in the vineyard through vegetation indices?

Can the satellite image resolution be improved to support precision agriculture in the vineyard through vegetation indices?

Abstract

Aim: This study aims to show the application of a new methodological approach to improve the resolution of Sentinel-2A images and derived vegetation indices through the results from different vineyards. 

Methods and Results: A multiscale fully-connected Convolutional Neural Network (CNN) was constructed and applied for the pan-sharpening of Sentinel-2A images by high resolution UAS-based orthophoto. The reconstructed data was validated by independent high resolution multispectral UAS-based imagery and in-situ spectral measurements. The reconstructed Sentinel-2A images provided a temporal evaluation of plant responses to environmental factors using selected vegetation indices. The proposed methodology has been applied on different vineyards in southern Italy. Here, the outputs of CNN were compared with morpho-physiological data, both collected in-vivo and reconstructed through the retrospective analysis of vine trunk wood (tree-rings). The functional anatomical traits and isotopic signals were measured and used to derive indices such as water use efficiency. The obtained results showed a valuable agreement between the vegetation indices derived from reconstructed Sentinel-2A data and plant hydraulic traits obtained from tree-ring based reconstruction of vine eco-physiological behavior.

Conclusions: 

The multiscale CNN architecture for remote sensing imagery pan-sharpening and reconstruction can overcome the constraints in use of satellite images in precision agriculture, by creating new fused data valid for applications that could not be supported by the original Sentinel multispectral or UVS data. The validation of such an approach on different and real vineyard systems, with data collected in-vivo and through retrospective analyses on tree-ring chronologies has shown great potential to extend the approach to other woody crop systems. 

Significance and Impact of the Study: The integration between knowledge from different scientific domains represents a powerful approach to support the farmer in the field management and, at the same time, a valuable opportunity to study the plant adaptation to variable pedo-climatic conditions. This represents the base for understanding the vine adaptive capability and planning the actions for vineyard management under different climatic scenarios. Finally, emerging CNN methodologies can be implemented in DSS to support real-time monitoring of several parameters related to plant health status, to better follow plant growth in the field and evaluate its performance under changing environmental conditions.

DOI:

Publication date: March 23, 2021

Issue: Terroir 2020

Type: Video

Authors

A. Bonfante1*, A. Brook2, G. Battipaglia3, A. Erbaggio4, M. Buonanno1, E. Monaco1, C. Cirillo5, V. De Micco5

1Institute for Mediterranean Agricultural and Forest Systems -CNR-ISAFOM, National Research Council, Ercolano-NA, Italy
2Spectroscopy & Remote Sensing Laboratory, Department of Geography and Environmental Studies, University of Haifa, Mount Carmel, Israel
3Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “L. Vanvitelli”, Caserta, Italy
4Freelance
5Department of Agricultural Sciences, University of Naples Federico II, Portici – NA, Italy

Contact the author

Keywords

Precision agriculture, satellite image resolution, CNN, grapevine hydraulics, KTB group approach

Tags

IVES Conference Series | Terroir 2020

Citation

Related articles…

Terroir analysis and its complexity

Terroir is not only a geographical site, but it is a more complex concept able to express the “collective knowledge of the interactions” between the environment and the vines mediated through human action and “providing distinctive characteristics” to the final product (OIV 2010). It is often treated and accepted as a “black box”, in which the relationships between wine and its origin have not been clearly explained. Nevertheless, it is well known that terroir expression is strongly dependent on the physical environment, and in particular on the interaction between soil-plant and atmosphere system, which influences the grapevine responses, grapes composition and wine quality. The Terroir studying and mapping are based on viticultural zoning procedures, obtained with different levels of know-how, at different spatial and temporal scales, empiricism and complexity in the description of involved bio-physical processes, and integrating or not the multidisciplinary nature of the terroir. The scientific understanding of the mechanisms ruling both the vineyard variability and the quality of grapes is one of the most important scientific focuses of terroir research. In fact, this know-how is crucial for supporting the analysis of climate change impacts on terroir resilience, identifying new promised lands for viticulture, and driving vineyard management toward a target oenological goal. In this contribution, an overview of the last findings in terroir studies and approaches will be shown with special attention to the terroir resilience analysis to climate change, facing the use and abuse of terroir concept and new technology able to support it and identifying the terroir zones.

The ampelographic collection – glorious past, challenging present, expectant future

During the more than 190 years since the founding of the first ampelographic collection, the creation of a series of collections is attested on the territory of the Republic of Moldova, each operating in different historical periods and socio-economic conditions,

“Terroir” and grape and wine quality of native grape variety Istrian Malvasia

Viticulture and wine production have a historical tradition in Istria. First written document of vine cultivation in this area date since antiquity. The most wide spread vine variety in Istria is Istrian Malvasia (white variety), and it capture about 60% of total vineyard surface in Istria today.

Wine aging : a bottleneck Story ?

The sporadic oxidation of white wines remains an open question, making wine shelf life a subjective debate. Through a multidisciplinary synoptic approach performed as a remarkable case study on aged bottles of white wine, this work unraveled a yet unexplored route for uncontrolled oxidation.

WINE SWIRLING: A FIRST STEP TOWARDS THE UNLOCKING OF THE WINE’STASTER GESTURE

Right after the pouring of wine in a glass, a myriad of volatile organic compounds, including ethanol, overwhelm the glass headspace, thus causing the so-called wine’s bouquet [1]. Otherwise, it is worth noting that during wine tasting, most people automatically swirl their glass to enhance the release of aromas in the glass headspace [1]. About a decade ago, Swiss researchers revealed the complex fluid mechanics underlying wine swirling [2]. However, despite mechanically repeated throughout wine tasting, the consequences of glass swirling on the chemical space found in the headspace of wine glasses are still barely known.