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Article
2023
Grape pomace's potential on semi‐arid soil health enhances performance of maize, wheat, and grape crops
Grape pomace's potential on semi‐arid soil health enhances performance of maize, wheat, and grape crops
Abstract (English)
Background: Grape pomace (GP) is a by-product of wineries after filtering the grape juice
for wine production. GP contains seeds, pulp, skin, and stalks with acidic properties, and
it is normally composted before using as a soil amendment. However, composting GP
requires more time, labor, and equipment; furthermore, composting loses some of the
desirable organic acids for arid soils. The acidic properties of these organic acids and the
plant nutrients in GP make it a desirable amendment for arid soils in both non-composted
and composted forms.
Aim: This study investigates the potential of directly applying GP as a soil amendment and
its impact on arid soil health and plant performance.
Methods: To test the potential of non-composted GP as a soil amendment, greenhouse
and field studies were conducted by combining GP with existing management practices
(manure application for soil used in the greenhouse study and fertigation for the field
study) to assess the effects of GP on soil health and crop (maize, wheat, and grape)
performance.
Results: Adding 5% GP to an alkaline soil significantly increased maize and wheat growth
and shoot nutrient concentrations in the greenhouse and grapes in the field (48% yield
increase). The significance of GP on maize, wheat, and grapes was associated with soil
nutrient enhancements (i.e., nutrients supplied, increase in organic matter and microbial
biomass increase, reduction in pH, and better nutrient mobilization).
Conclusion: GP has the potential for direct use as a soil amendment for soil and crop
health improvement, especially in arid soils with high pH and limited soil organic matter.
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Published in
Journal of plant nutrition and soil science, 186 (2023), 3, 276-285.
https://doi.org/10.1002/jpln.202200232.
ISSN: 1522-2624
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English
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630 Agriculture
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Sustainable Development Goals
BibTeX
@article{Mpanga2023,
url = {https://hohpublica.uni-hohenheim.de/handle/123456789/16309},
doi = {10.1002/jpln.202200232},
author = {Mpanga, Isaac K. and Neumann, Günter and Brown, Judith K. et al.},
title = {Grape pomace's potential on semi‐arid soil health enhances performance of maize, wheat, and grape crops},
journal = {Journal of plant nutrition and soil science},
year = {2023},
volume = {186},
number = {3},
}