The paper reports on the influence on the deep loosening performed with different  tools (PP.3-30  plough, chisel and MAS-60) of amendment and fertilization on the chemical indices(soil reaction, nitric  and ammonium nitrogen) of the preluvosoil  from Oradea and in the maize harvest.

deep loosening; amendment; fertilization; chemical indices of soil; maize harvest

Presentation: oral