Effect of Forage Plant Mixture and Biostimulants Application on the Yield, Changes of Botanical Composition, and Microbiological Soil Activity

Recently, an increasing interest in such fertilizers and fertilization methods which not only directly supply nutrients to plants, but also stimulate soil bioactivity is noted. Their effect on both microbiota forage plants has been fully recognized. The aim of the study was investigate combined plant mixture type mineral (NPK) with biostimulants based a marine algae extracts botanical composition, yield, structure selected taxonomic trophic groups microorganisms, enzymatic activity. During years 2018–2019 field experiment established split-plot design two different mixtures, as first factor, basing amended biostimulants, second factor conducted. Two types mixtures sown species were used: grass (GM) legume-grass (LGM). Every year following applied: N-14, PinKstart, Physiostart, Physioactive they compared standard NPK fertilisation no control. reaction applied different. intensive development species, mainly Lolium perenne, at expense Trifolium repens share LGM observed. In GM sward dominated Dactylis glomerata. A beneficial effects biostimulants’ application biomass yields systematic acidification decrease activity result fertilization, except + treatment (calcium fertilizer containing 76% calcium carbonate), Soil dependent composition sward. counts microorganisms under almost times higher than GM. most effective, reducing negative nitrogen pH soil, Physioactiv.