Possibility for synergic growth-stimulating effects of humic substances and water with low isotope 2H content on the germination of wheat seeds under favourable and stress conditions

A growth-stimulating effect of commercial humic preparations made from coal Energen-LK and Powhumus and water with low, relative to the natural, level of the isotope 2H (≈120 ppm and lower) on the germination of wheat seeds was studied. A bioassay performed under favourable conditions failed to demonstrate this effect, but a bioassay performed under stressful conditions with use of the herbicide glyphosate resulted in significant growth-stimulating effects of each factor and also synergistic effects. © 2013 Zhejiang University Press and Springer Science+Business Media Dordrecht. All rights are reserved.