Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Nicoleta MARIN, Paul KURTINETZ, Carmen SÎRBU, Patrick URSAN, Lavinia BURTAN
The paper presents the results of soil samples obtained from a long-term experience at Livada (Satu Mare County). The experiment carried out was of bifactorial type with variants fertilized with manure and mineral fertilizers with nitrogen and phosphorus. Manure was applied once every 5 years in 4 doses (0 t/ha, 20 t/ha, 40 t/ha and 60 t/ha) and mineral fertilizers in 4 doses (N0P0, N50P0, N50P50, N100P100 kg/ha) annually. The obtained results showed that in the variants fertilized only with manure, the content of mobile potassium increased very significantly for all applied doses, from 162 mg/kg in the control variant to 239 mg/kg in the variant fertilized with 60t/ha. Fertilization with nitrogen and phosphorus determined significant and very significant accumulations of nitrogen, mobile phosphorus, the potassium content having a decreasing trend. The humus content of the soil increased significantly when applying 40 t/ha and 60 t/ha. Productions were reduced in all experimental variants, the year 2022 being a very dry year.
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