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Tag: Micronutrients

Eh-pH map (Husson, et al.) — Eh–pH map of indicative zones where the main groups of pests or pathogens can thrive, corresponding to oxidized plants. Viruses develop in alkaline phloem and possibly xylem, as do most bacteria. Inversely, most fungi prefer the acidic and more oxidized apoplast. Oomycetes often thrive in moderately oxidized apoplast, usually at higher pH than their fungal counterparts. Insects have different preferences, according to their feeding mode: xylem- or phloem-sucking insects at higher pH and lower Eh compared with chewing-biting insects; larvae at lower pe + pH and higher pH compared with adults. These are only tendencies for the main groups of pathogens and pests, as optimal Eh–pH conditions are specific. Although some pathogens are ubiquitous and are able to develop in a large range of Eh–pH conditions, most pathogens can develop only in a specific, narrow Eh–pH range (Rabotnova and Schwartz 1962).

Crop nutrition

The Redox Revolution

January 2, 2026

The practical outworkings of how understanding Eh-pH homeostasis improves crop protection This is a continuation of last month’s article, “The ...

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More Than Just a Valley

Crop management practices

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by Wendy Zellner

Properly managing silicon can promote high quality and yield Silicon is a vital component for water and nutrient balance in ...

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