A new index of suppleness of soil reduction SSR is proposed to agrochemical characteristics of soil which may be considered as an index of soil fertility. Established values 25 mV/24 hours as threshold between low and high suppleness on reduction of soil. The SSR index may be practically useful for a characteeristics of soils.
Index of suppleness on soil reduction was connected with a chemical properties of soils. Decrease of redox potential was bigger in the soils which content more organic carbon and total nitrogen. The continuation of field experiment with organic matter treatment will be needed for evaluation of soil suppleness on reduction as soil fertility index.
The dependence between cation saturation state index (CSS index) and hydrogen ions determined with various methods was estimated. It was determined that the dependencies between CSS index, and the concentration of hydrogen ions in soil solution and hydrogen ions in soil had the character of function y=a/x and the dependence between CSS index and adsorbed hydrogen ions had the shape of function y=bx+c. The determined dependencies, and especially the function y=a/x, indicate the decrease of CSS index down to the value close to 1.0 and lower. It is connected with very quick increase in the amount of hydrogen ions in soil.
Oceniano wpływ wapnowania na skład mineralny zielonki koniczyny czerwonej, zebranej w początkowej fazie kwitnienia, którą podejrzewano, że po zjedzeniu przez zwierzęta (krowy mleczne) spowodowała wystąpienie zatruć pokarmowych. Przeprowadzone badania wykazały, że zawartość makroelementów (N-ogólny, N-N03, P, K, Ca, Mg), mikroelementów (Fe, Mn, Zn, Cu) i metali ciężkich (Cd, Pb, Ni) w paszy była na poziomie zbliżonym do optymalnego i nie powinna wywołać zatruć. Wywołane schorzenia mogły zostać spowodowane przez inne czynniki, które okazały się toksyczne dla zwierząt, na przykład przez zanieczyszczenie koniczyny niewłaściwym zastosowaniem wapna tlenkowo-magnezowego.
Using basic pot experiments and chemical analyses of soils and plants, this study sought to determine the effect of soil moisture and soil saturation with cations on the yield of spring barley and oats and on the state of ionic balance in the plants. It was found that an increase in soil moisture positively affected the quantity of spring barley mass but negatively affected that of oats mass. In conditions of higher soil moisture, there was a higher uptake of non-organic anions and a lower uptake of cations by the plants. Saturation of the soil with base cations above 60 % positively affected the quantity of both spring barley and oat mass.