terclim by ICS banner
IVES 9 IVES Conference Series 9 High throughput winter pruning weight estimation based on wood volume evaluation 

High throughput winter pruning weight estimation based on wood volume evaluation 

Abstract

There is currently a real need to improve and speed-up phenotyping in experimental set-ups to increase the number of modalities studied. Accurate information acquisition on plant status with high-throughput capacity is the main appeal of on-board systems.

A proximal sensing camera for a proxy of winter pruning weight was tested. We estimated the shoot volume of the vine by image analysis using algorithms that integrate the local shoot section area estimate along the shoot skeleton obtained by a morphological distance transform.

The study was carried out on the GreffAdapt experimental vineyard in Guyot simple training and a canopy management using vertical trellising. The planting density is 6250 vines/ha with a row spacing of 1.6×1m. Five scions grafted onto 55 rootstocks are present and the combination rootstock×scion is different every five plants.

In 2021 and 2022, 10 different rows of 70 plants were phenotyped by photographing each plant with a resolution of 4 pixels/mm² and by the classical method, i.e. the weight of the winter pruning wood.

The results are that the winter pruning weight can be estimated at the fine scale of five vines with R²=0.68 in 2021 and 0.74 in 2022. Incrementing the wood density of the scion into our calculation improves the regression with R² reaching 0.81 in 2022. Our approach, in which the estimation is done on the entire visible shoots, showed better results than the only known approach used in commercial devices, which simply uses the linear intercepts of a laser beam along the vine row.

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Marine Morel1*, Aymeric Deshayes2, Barna Keresztes2, Jean-Pierre Da Costa2,3, Elisa Marguerit1

1 EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, Villenave d’Ornon, France
2 Univ. Bordeaux, CNRS, Bordeaux INP, IMS, UMR 5218, F-33400 Talence, France
3 Bordeaux Sciences Agro, F-33175 Gradignan, France

Contact the author*

Keywords

vigour confered, field phenotyping, proximal sensing, precision viticulture, grapevine

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Emerging pest pressures in viticulture: a brief review of Argyrotaenia Ljungiana in Eastern Europe

As viticulture faces increasing threats from emerging pests, understanding and dealing with new infestations is crucial.

An Ag+ SPE method combined with Deans’ switch heart-cutting MDGC–MS/Olfactometry approach for identifying unknown volatile thiols in wine

Wine aroma is a crucial quality criterion. A multitude of volatile compounds have been identified and correlated to the aroma attributes perceived in wine.

Considerations about the concept of “terroir”: definition and research direction

On exposera la distinction et la relation entre: “Etude des milieux”, “Zonage Petit ou Zonage Technique ou Sub Zonage”, “Grand Zonage”, “Délimitation des zones productives” ex.

Aroma characterization of mold resistant base wines for sparkling wine produced in a warm-temperate area at two different altitudes

In a recent context where consumers pay an increasing attention to sustainability and eco-friendly aspects in the decision-making process, the use of the resistant varieties in the wine sector have returned to the attention. In this context, the use of mould-resistant grape varieties would be an opportunity for sparkling wine producers as it can reduced the pesticide utilization in grape management and hence production costs.
However, the use of the resistant varieties to produce the base wine may be strongly influenced due to its requirements for a particular balance between sugars and acidity to ensure the quality of the final product. In addition, the aromatic profile of base wine plays a crucial role in the perception of the quality of the sparkling wine.

Flooding responses on grapevine: a physiological, transcriptional and metabolic perspective

Studies on model plants have shown that temporary soil flooding exposes roots to a significant hypoxic stress resulting in metabolic re-programming, accumulation of toxic metabolites and hormonal imbalance. To date, physiological and transcriptional responses to flooding in grapevine are poorly characterized. To fill this gap, we aimed to gain insights into the transcriptional and metabolic changes induced by flooding on grapevine roots (K5BB rootstocks), on which cv Sauvignon blanc (Vitis vinifera L.) plants were grafted.