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Keywords = phytogenic silica

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18 pages, 5323 KiB  
Article
Silica Accumulation in Potato (Solanum tuberosum L.) Plants and Implications for Potato Yield Performance—Results from Field Experiments in Northeast Germany
by Daniel Puppe, Jacqueline Busse, Mathias Stein, Danuta Kaczorek, Christian Buhtz and Jörg Schaller
Biology 2024, 13(10), 828; https://doi.org/10.3390/biology13100828 - 16 Oct 2024
Cited by 2 | Viewed by 1563
Abstract
The potato is the most important non-cereal food crop, and thus improving potato growth and yield is the focus of agricultural researchers and practitioners worldwide. Several studies reported beneficial effects of silicon (Si) fertilization on potato performance, although plant species from the family [...] Read more.
The potato is the most important non-cereal food crop, and thus improving potato growth and yield is the focus of agricultural researchers and practitioners worldwide. Several studies reported beneficial effects of silicon (Si) fertilization on potato performance, although plant species from the family Solanaceae are generally considered to be non-Si-accumulating. We used results from two field experiments in the temperate zone to gain insight into silica accumulation in potato plants, as well as corresponding long-term potato yield performance. We found relatively low Si contents in potato leaves and roots (up to 0.08% and 0.3% in the dry mass, respectively) and negligible Si contents in potato tuber skin and tuber flesh for plants grown in soils with different concentrations of plant-available Si (field experiment 1). Moreover, potato yield was not correlated to plant-available Si concentrations in soils in the long term (1965–2015, field experiment 2). Based on our results, we ascribe the beneficial effects of Si fertilization on potato growth and yield performance reported in previous studies mainly to antifungal/osmotic effects of foliar-applied Si fertilizers and to changes in physicochemical soil properties (e.g., enhanced phosphorus availability and water-holding capacity) caused by soil-applied Si fertilizers. Full article
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