1996 * VII * 4


E. Leedu, L. Murdam. The recultivation of Estonian open-cast oil-schale pits into fields and the microbiological state of stripped topsoil during its’ storage ... 342
A. Linnutaja, H. Kärblane. Influence of nitrogen fertilizer to the yield and quality of fodder grain ... 357
M. Ivask. Dynamics of the number and biomass of the earthworms in cultivated grassland soils ... 375
L. Nigul. Nutritive value of triticale, biotrin and hydrolyzed yeast as feed for swine ... 382
M. Heinloo, M. Külasalu. Design of seedbed cultivator tine displacements, soil penetrating angle and maximum equivalent stress under applied load ... 389