B. Sideral fertilizers applied in the form of winter catch crops in the cultivation of white cabbage. Part IV. Effect of winter catch crops and rye straw as compared to farmyard manure on the soil moisture
B. Nawozy zielone w formie miedzyplonow ozimych w uprawie kapusty glowiastej bialej. Cz.IV. Wplyw miedzyplonow ozimych i slomy zytniej w porownaniu z nawozeniem obornikiem na wilgotnosc gleby