Impact of Foliar Application with Amino Alexin and a Mixture of Marvel Fertilizer with Growth Regulator (Floratone) in Physio-Biochemical Parameters of Bitter Orange Saplings (Citrus aurantium L.)

Abstract This experiment was implemented during 202l -2022 season as a factoria1 experiment (4×3) relying on (R.C.B.D.). Two factors were tested in this experiment: first factor is: Foliar application at 4 levels: (0, l, 2, 3) ml L -1 from a mixture of MARVEL fertilizer with plant growth regulator (FLORATONE (6 g L -1 ). Second factor is Foliar application at three levels of Amino Alexin fertilizer (0, l.5, 3) ml L -1 . Results were summarized that foliar application for a combination of (MARVEL + FLORATONE) at (3 m1 L -1 ) had a positive impact in physio-Biochemical Parameters (leaf area, chlorophyll, carbohydrates, N, P) that recorded (42.24 cm 2 , 24.93 Spad, 33.43, 1.36%, 0.57%) respectively. Concentration (2 m1 L -1 (caused a noticeable increase in (K, Fe, Mn) that recorded(1.48%, 167.2 mg g -1 , 36.98 mg g -1 ) On the relay by analogy with control. Amino Alexin (3 m1 L -1 ) had a positive impact in physio-Biochemical Parameters (leaf area, chlorophyll, carbohydrates, N, P, K, C/N ratio, Fe, Mn) witch recorded (41.71, 26.42, 34.65, 1.40, 0.60, 1.53, 24.67, 164.2, 34.95) respectively compared to control. Double interaction effect between the two factors was significant in all physio-Biochemical Parameters compared to control.