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Table 1 A summary of six commercial biostimulant formulations showing major and minor active components, active compounds with targeted stress factors, supporting references and recommended field application range or rate

From: Physicochemical analyses of plant biostimulant formulations and characterisation of commercial products by instrumental techniques

Formulation name

Major component

Minor component

Active compounds

Target stress factors

Field application range or rate/ha

Mid-point of application ratea

Rygex

Humic acids, algal extracts

Amino acids

Humic acid, amino acid, alginates and minerals

Drought and salt stress

Foliar: 20–30 kg in 300 l

25 kg/300 l

Algavyt

Algal extracts

Amino acids

Mannitol, amino acid and minerals

Drought and cold stress

Foliar 100–150 g in 100 l

125 g in 100 l

Ryzoset

Plant extracts, polysaccharides

Lipids

Amino acid, lipids, saponins,

Enhanced root growth to reduce abiotic and biotic stresses

Foliar: 20 l in 300 l

–

Manek

Fatty acid/vegetable oil

Plant extracts

Fatty acid, alkaloid, phenol, diterpenes, glucosinolates, tannins

Enhanced resistance to biotic stress

Fertigation: 15 l in 300 l

–

Ecoryg

Plant peptides, amino acids

Minerals

Amino acid, proteins and minerals

Drought stress

Foliar: 70–150 kg in 300 l

110 kg/300 l

Algavyt Zn/Mn

Algal extracts

Amino acids, minerals

Alginates, amino acid, minerals

Biotic stress

Foliar: 100–150 g in 100 l

125 g/100 l

  1. aMid-point of the recommended application range was used as test concentrations for the DLS analysis of Rygex, Algavyt, Ecoryg and Algavyt Zn/Mn and recommended application rate for Ryzoset and Manek only