Raising the Efficiency of Mineral Fertilization Using Azolla with Microelements

Synthetic nitrogen fertilizers can contribute to environmental hazards. Moreover, their manufacturing is an energy-intensive process which causes greenhouse gas emissions, lead climate change. Therefore, it should evaluate the possibility use organic sources such as Azolla a partial substitute for synthetic in cultivation, this may reduce cost of fertilizer inputs, and promote sustainable agriculture. So, field trial was carried out Tag El-Ezz Experimental Farm (30°56' 12.88" E longitude 31°31' 47.64" N latitude) during seasons 2021/2022 2022/2023 assess additive recommended dose (NRD=178.6 kg ha-1) combined treatments urea (46.5%N) mineral source (4.0 %N) source. Also, exogenous application zinc (zinc sulfate, 22.8% Zn) copper (copper 21.8 %Cu) evaluated. The tested plant wheat (Cv. Giza 171). [T1: 100% NRD (control),T2:75% urea+25% Azolla,T3:50% urea+50% Azolla, T4: 25% +75% T5: Azolla] represented main plots, while studied elements [F1: control (without spraying),F2:Zn (at rate 200 mgL-1) F3: (Cu at 20 mgL-1)] sub plots. findings illustrate that plants grown under T2 treatment had highest values growth performance (e.g., fresh dry weights total chlorophyll), yield its components grain yield, spike length weight 1000 grain) biochemical traits carbohydrates protein) compared corresponding other treatments, T1 (control) came second order followed by T3 treatment, T4 T5 last order, respectively. Regarding external applications, cu foliar superior Zn order. Generally, maximum were recorded (T2xF3). On hand, some soil fertility parameters like A-N, A-P A-K affected due all treatments. Finally, be concluded using fertilizers. obtained results confirm vital role both Cu plants.