Application of Plant Aqueous Extracts on Yield and Quality Parameters of Soybean Seeds (Glycine max L.)

Background: In order to reduce the use of synthetic and chemical agents in agriculture, more and more research is turning to ecological, more environmentally friendly methods. Plant aqueous extracts are products that can be a significant source of various elements, depending on the type and quality of soil on which the plant species from which the solution is prepared is grown. Methods: The aim of this study was to investigate the influence of aqueous extracts of different plant species on the yield and quality parameters of soybean seeds (Glycine max L.). Aqueous extracts of: nettle, nettle+comfrey, banana, banana peel, onion, willow and soybeans were used foliarly. The 1st foliar treatment plants was done when first flowers opened and the 2nd treatment was done when first pod reached final length. Result: The effect of aqueous extracts depends on the agroecological conditions and the analyzed traits. In 2020 the greatest effect was achieved on the free proline, SOD, Px and CAT. In 2021 the application of certain aqueous extracts had a significant effect on the yield, gerimination energy, germination percentage and vigour seed.