IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 Benefits and risks of the utilization of grape pomace as organic fertilizers

Benefits and risks of the utilization of grape pomace as organic fertilizers


Rhineland-Palatinate is Germany’s largest wine growing region. The recently launched collaborative project in the frame of the ‘Carl-Zeiss-Stiftungs-Kooperationsfonds für Nachhaltigkeitsforschung’ focusses on the risk-benefit assessment of the use of grape pomace (GP) from the region ‘Pfalz’ in Rhineland-Palatinate as a natural fertilizer.GP contains high loads of bioactive compounds such as polyphenols and macro- as well as micronutrients which make GP an attractive, low-cost fertilizer [1,2]. On the other hand, GP may also contain residues of pesticides and mycotoxins. Their presence is undesirable in wine as well as in a potential fertilizer [3,4]. The application of high amounts of the above mentioned substances at once could negatively affect plant quality and microbial soil communities [5]. Therfore, the agricultural value of GP as a fertilizer could be limited by the transfer of these compounds into the soil. Up to date, little is known about the influence of GP constituents on the soil quality and processes, especially in a long-term exposure.In this project, we aim to determine the contents of polyphenols, mycotoxins, and pesticides in addition to the macro- and micronutrient content of GP from six different grape varieties. Furthermore, the effect on important soil parameters, such as nutrient availability, hydrodynaics, and microbiology will be analysed and evaluated.


[1] E. Nistor, A. Dobrei, E. Kiss, V. Ciolac, Journal of Horticulture, Forestry and Biotechnology 18, 141 (2014).
[2] C. Fuchs, T. Bakuradze, R. Steinke, R. Grewal, G.P. Eckert, E. Richling, Journal of Functional Foods 70, 103988 (2020).
[3] J.E. Welke, Current Opinion in Food Science 29, 7 (2019).
[4] X. Hou, Z. Xu, Y. Zhao, D. Liu, Journal of Food Composition and Analysis 89, 103465 (2020).
[5] C. Buchmann, A. Felten, B. Peikert, K. Muñoz, N. Bandow, A. Dag, G.E. Schaumann, Plant Soil 386, 99 (2015).


Publication date: June 23, 2022

Issue: IVAS 2022

Type: Poster


Sullivan Sadzik1, Korz Sven2, Buchmann Christian2, Richling Elke1 and Munoz Katherine2

1TU Kaiserslautern, Department of Chemistry, Division of Food Chemistry and Toxicology
2Universität Koblenz-Landau, Campus Landau, Germany

Contact the author


soil, grape pomace, fertilizer, polyphenols, mycotoxins


IVAS 2022 | IVES Conference Series


Related articles…

Physiological and growth reaction of Shiraz/101-14 Mgt to row orientation and soil water status

Advanced knowledge on grapevine row orientation is required to improve establishment, management and outcomes of vineyards on terroirs with different environmental conditions (climate, soil, topography) and in view of a future change to more extreme climatic conditions. The purpose of this study was to determine the combined effect of row orientation, plant water status and ripeness level on the physiological and viticultural reaction of Shiraz/101-14 Mgt.

Effects of mechanical leafing and deficit irrigation on Cabernet Sauvignon grown in warm climate of California

San Joaquin Valley accounts for 40% of wine grape acreage and produces 70% of wine grape in California. Fruit quality is one of most important factors which impact the economical sustainability of farming wine grapes in this region. Due to the recent drought and expected labor cost increase, the wine industry is thrilled to understand how to improve fruit quality while maintaining the yield with less water and labor input. The present study aims to study the interactive effects of mechanical leafing and deficit irrigation on yield and berry compositions of Cabernet Sauvignon grown in warm climate of California.

The effects of cane girdling on berry texture properties and the concentration of some aroma compounds in three table grape cultivars

The marketability of the table grapes is highly influenced by the consumer demand; therefore the market value of the table grapes is mainly characterized by its berry size, colour, taste and texture. Girdling could cause accumulation of several components in plants above the ringing of the phloem including clusters and resulting improved maturity. The aim of the experiments was to examine the effect of girdling on berry texture characteristics and aroma concentration.

Application of a fluorescence-based method to evaluate the ripening process and quality of Pinot Blanc grape

The chemical composition of grape berries at harvest is one of the most important factors that should be considered to produce high quality wines. Among the different chemical classes which characterize the grape juice, the polyphenolic compound, such as flavonoids, contribute to the final taste and color of wines. Recently, an innovative non-destructive method, based on chlorophyll fluorescence, was developed to estimate the phenolic maturity of red grape varieties through the evaluation of anthocyanins accumulated in the berry skin. To date, only few data are available about the application of this method on white grape varieties.

Different yield regulation strategies in semi-minimal-pruned hedge (SMPH) and impact on bunch architecture

Yields in the novel viticulture training system Semi-Minimal-Pruned Hedge (SMPH) are generally higher compared to the traditional Vertical Shoot Positioning (VSP). Excessive yields have a negative impact on the vine and wine quality, which can result in substantial losses in yield in subsequent vintages (alternate bearing) or penalties in fruit quality. Therefore yield regulation is essential. The bunch architecture in SMPH differs from VSP. Generally there is a higher amount but smaller bunches with lower single berry weights in SMPH compared to VSP.