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Plant tonics

Term for substances that increase or strengthen the resistance of plants to harmful organisms. However, they must not have a direct effect on harmful organisms or pathogens, as they would otherwise be subject to much stricter regulations as plant protection products. Depending on their effect, there are inorganic (e.g. cell wall-strengthening rock flour such as kaolin and water glass or carbonates such as potash or chalk), organic (e.g. dried plants, plant extracts, plant oils, whey, protein, propolis and plant hormones such as auxins and gibberellins), homeopathic (organic and inorganic substances in minute quantities) and microbial-based (e.g. fungi and microorganisms) fertilisers.

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Andreas Essl
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The world's largest Lexicon of wine terms.

26,427 Keywords · 47,031 Synonyms · 5,321 Translations · 31,760 Pronunciations · 207,741 Cross-references
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