Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 1
Written by Alexandra LEONTE, Simona Florina ISTICIOAIA, Andreea-Sabina PINTILIE, Lorena Diana POPA, Doru STANCIU, Paula Lucelia PINTILIE, Adina Cătălina DRUŢU, Nicoleta VRÎNCEANU

Winter wheat is a key agricultural crop that responds positively to fertilizers under the soil and climatic conditions of our country. However, factors influencing fertilizer efficiency and dosing challenges necessitate the implementation of long-term studies to investigate the complex interactions among plant, soil, fertilizer, and climate, as well as their impact on crop yield. This paper presents findings from a long-term study on the use of chemical fertilizers (NP) in winter wheat, carried out at the Agricultural Research and Development Station Secuieni, Romania (26°5' E; 46°5' N) during the period 2020-2023. The yields obtained from applying chemical fertilizers varied depending on the applied dose. On average, the studied factors had a considerable influence on wheat yield, resulting in significant variability in yield, ranging from 4886 kg ha^-1 (unfertilized, N₀P₀) to 7117 kg ha^-1 (N₈₀P₁₆₀ active substance). The interaction between phosphorus and nitrogen on wheat seed yield demonstrated a significant impact, contributing to increases of up to 21.7% and 16.1%, respectively, compared to the control.

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