Author

A. Ulbrich

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Open access Aug 2026

Impact of nutrient concentration and pH on vegetative growth and leaf metabolite composition of Vanilla planifolia in soilless culture

Despite its status as one of the most expensive spices, the morphological and physiological responses of Vanilla planifolia (V. planifolia) to nutrient solution electrical conductivity (EC) and pH remain uncharacterised. This study quantified the effects of three nutrient solution EC levels (0.6, 1.2, 1.8 mS cm−1) and...

Marvin Vahl, Falco Beer, C. H. Weinert et al. · Discover Plants · 0 citations

Open access Aug 2026

Vegetative growth, biomass allocation, and chlorophyll fluorescence of vanilla (Vanilla planifolia) as affected by light intensity and nitrogen supply

This study quantified the individual and interactive effects of photosynthetic photon flux density (PPFD) and nitrate-nitrogen supply on vegetative growth of Vanilla planifolia (V. planifolia) in a factorial experiment combining four PPFD levels (10‑208 µmol m⁻2 s⁻1) and six nitrogen concentrations (6.9‑60.5 mg NO₃⁻‑N...

Marvin Vahl, Jannis von Salzen, A. J.Eismann et al. · Discover Plants · 0 citations

Open access Sep 2026

Nitrate-to-ammonium ratio shapes vegetative growth, nutrient status, and physiology of Vanilla planifolia in soilless culture

Vanilla is a high-value crop whose demand exceeds supply, yet evidence-based nutrient management remains unexplored. This study investigated the effect of nitrogen form on vegetative growth, biomass allocation, and physiology of Vanilla planifolia in soilless culture. Ninety-five plants were assigned to five NO₃⁻-N: NH...

Marvin Vahl, Finn Petersen, Jannis von Salzen et al. · Discover Plants · 0 citations