A5071416851- Horticultural and Viticultural Research
- Fermentation and Sensory Analysis
- Plant Water Relations and Carbon Dynamics
- Plant Pathogens and Fungal Diseases
- Spectroscopy and Chemometric Analyses
- Meat and Animal Product Quality
- Greenhouse Technology and Climate Control
- Plant responses to elevated CO2
- Leaf Properties and Growth Measurement
- Soil erosion and sediment transport
- Plant biochemistry and biosynthesis
- Plant Physiology and Cultivation Studies
- Medicinal plant effects and applications
- Plant and Fungal Interactions Research
- Soil Carbon and Nitrogen Dynamics
- Forest Ecology and Biodiversity Studies
- Botanical Research and Applications
- Mycorrhizal Fungi and Plant Interactions
- Smart Agriculture and AI
- Plant responses to water stress
- Wine Industry and Tourism
- Plant and animal studies
- Sensory Analysis and Statistical Methods
- Bee Products Chemical Analysis
- Advanced Chemical Sensor Technologies
Hochschule Geisenheim University
2014-2024
An active and diverse soil biota is important for maintaining crop productivity quality, preservation of these traits a major goal sustainable farming. This study aimed at unravelling the impact different management practices on fungal bacterial biodiversity in vineyards as model permanent crops. Species diversity was assessed using an amplicon sequencing approach long-term field experiment Rheingau wine region Germany where integrated, organic biodynamic had been place 10 years. Fungal...
Interest in sustainability has increased significantly the wine sector past few years, driven by customer interest, as well impact of global warming-intensified weather extremes on growers. For a sustainable future industry must design its entire value chain such ways that it conserves and regenerates natural environment at same time promotes human rights, inclusion equality. The current paper identified five key challenges which have to be overcome order reach this goal: (1) climate change...
Background and Aims Insolation of grape bunches has long been postulated to enhance the flavour aromatic cultivars. This hypothesis was tested by combining gene expression metabolic analysis monoterpene flavonol synthesis pathways. Methods Results Grape were shaded or reilluminated investigate influence light on biosynthetic The terpenoid genes measured quantitative polymerase chain reaction under shade conditions during ripening phase compared accumulation their respective products....
To sustainably adapt viticultural production to drought, the planting of rootstock genotypes adapted a changing climate is promising means. Rootstocks contribute regulation scion vigor and water consumption, modulate phenological development determine resource availability by root system architecture development. There is, however, lack knowledge on spatio-temporal its interactions with environment management that prevents efficient transfer into practice. Hence, winegrowers take only...
Microclimate and irradiation have long been known to influence winegrape (Vitis vinifera) quality. However, microclimate on white grape quality has remained understudied, as most research efforts focused red varieties their anthocyanin content. In this study, we investigated microclimatic effects the phenolic amino acid composition of 'Riesling' grapes using bunch shading leaf removal manipulate microclimate. Both treatments were applied directly after fruit set (modified E‑L 27; (Coombe...
In the context of climate change, yield and quality losses from sunburn necrosis are challenging grape growers around world. a previous review, we identified role wind speed, duration heat exposure, drought stress adaptation as major knowledge gaps that prevent better predictability events. this paper present results targeted experiments aiming to close these gaps. The effects on susceptibility were investigated in combined stress/ defoliation experiment. Riesling grapevines growing an arid...
Background and Aims Optical leaf sensing of plant nitrogen (N) status enables fertilisation based on demand. The aim this study was to assess the suitability reflectance indices a handheld device for estimation N chlorophyll (Chl) in Vitis vinifera L. cv. Riesling. Methods Results Riesling leaves from long-term trial were analysed pigments their spectral Vis/near-infrared range recorded two consecutive seasons. In second season also measured with Chl fluorescence portable (Dualex). Published...
Aim: The aim of this study was to investigate the effects integrated (INT), organic (ORG) and biodynamic (BD) management systems with similar C- N-inputs on soil microbiology in a viticultural long-term field trial.Methods results: Within comparison, samples were taken 10 years after conversion, throughout growing season. To gather information about microbial community structure, activity five enzymes measured, phospholipid fatty acids (PLFA) neutral lipids (NLFA) profiles analysed...
Future climatic conditions might have severe effects on grapevine architecture, which will be highly relevant for vineyard management decisions shoot positioning, pruning or cutting. This study was designed to help gaining insight into how, in particular, increasing temperatures affect canopies. We developed a functional-structural model Riesling, Virtual based digitised data of real plants and comprehensive state-of-the-art analysis. The accounts the variability temperature-sensitive...
Background and Aims To successfully use berry sorting in winemaking, it is crucial to understand the interaction of physical chemical composition berries. The aim this study was investigate relationship between diameter colour aspects wine composition, such as titratable acidity, aroma compounds phenolic substances Vitis vinifera L. cv. Riesling. Methods Results In a first trial, berries were sorted into three classes with equal TSS concentration vinified by 70 mL scale fermentation. second...
The training system Semi-Minimal-Pruned Hedge (SMPH) blends features of traditional Vertical Shoot Positioning-type (VSP) trellising systems with the concept minimal pruning. While saving labor, this results in relatively high crop load and a poor leaf area to fruit weight-ratio (LFR), thus, needs be able ripen grapes cool moderate climate. For these reasons impact yield regulation strategies, including (i) shoot thinning (Darwin-Rotor), (ii) biotechnological (Gibberellic acid), (iii) bunch...
Abstract Leaf removal is a standard vineyard management technique to influence grape composition or reduce disease pressure; however, the timing and intensity of leaf widely discussed issue. The interplay different goals effects over time does not make experimental studies any easier. To gain insight into positive negative consequences on grapevine development, first step can be study how affects canopy’s light absorption using dynamic model approach. Functional–structural plant models...
Modeling plant growth, in particular with functional-structural models, can provide tools to study impacts of changing environments silico. Simulation studies be used as pilot for reducing the on-field experimental effort when predictive capabilities are given. Robust model calibration leads less fragile predictions, while introducing uncertainties predictions allows accounting natural variability, resulting stochastic growth models. In this study, components that implemented into Virtual...
Understanding root system architecture (RSA) is essential for improving crop resilience to climate change, yet assessing systems of woody perennials under field conditions remains a challenge. This study introduces pipeline that combines excavation, in situ 3-dimensional digitization, and transformation RSA data into an interoperable format analyze model the growth water uptake grapevine rootstock genotypes. Eight each 3 genotypes ("101-14", "SO4", "Richter 110") were excavated digitized 6...
Two commercial yeast strains with reduced alcohol production in comparison a strain common yield were assed for their suitability sparkling wine according to the traditional bottle fermentation. The different applied first As expected base differed terms alcohol. Furthermore lower content showed higher values of glycerol, arginine and same time levels proline after However those samples increased volatile acidity values, compared control wines. later fermentation uniform similar kinetics all...
Bunch rot caused by Botrytis cinerea is a major fungal disease in grapevines. Under humid climatic conditions, bunch development on grapes cannot be completely suppressed and control strategies mainly aim to delay the epidemic. In present study, we investigated potential of innovative cultural practice “partial double-pruning after bloom (PDP)” epidemic Pinot gris Riesling cultivars over five consecutive seasons (2016-2020) Remich/Luxembourg. Control vines were pruned at winter one 10-node...
Reproducibly comparing the heat stress response of grapevine berries from different cultivars in field is often limited by weather conditions during growing season. This work presents a mobile heating device capable controlled heat-stress induction on berries. The heater consisted six 150 W infrared lamps mounted profile frame. power could be set individually control unit consisting single board computer and temperature sensors positioned as desired. energy applied to individual within...