Studies on citrus nutrition and fertilization | ||||
| Menoufia Journal of Plant Production | ||||
| Article 1, Volume 10, Issue 2, February 2025, Page 37-42 PDF (484.26 K) | ||||
| Document Type: original papers | ||||
| DOI: 10.21608/mjppf.2025.418694 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mustafa Gamal Abdelgwad Mohamed Suleiman1; . M. R. M. Rabeh2; A. M. Fathalla3 | ||||
| 1Horticulture | ||||
| 2Prof. of Pomology, Fac. of Agric., Menoufia Univ. | ||||
| 3Lecturer of Pomology, Fac. of Agric., Menoufia Univ. | ||||
| Abstract | ||||
| This study was conducted during the 2020/2021 and 2021/2022 seasons on Navel orange trees onto sour orange rootstock at the Orchard of the Faculty of Agriculture at Shebin El-Kom, Menoufia University. The texture of the soil is clay loam. This experiment aimed to elucidate the impact of various sources, levels, and methods of nitrogen applications on the growth, fruit set, yield, and both physical and chemical properties of Navel orange trees. The experiment included the following nine treatments: Application of ammonium sulfate (20.6% N) at 5 kg/ tree Application of liquid ammonium nitrate (41.2% N) at 2.5 L/tree Application of urea (46.5% N) at 2.2 kg/tree Application of Enciabene (40 % N) at 1.25 kg/tree Application of Enciabene (40 % N) at 1.875 kg/tree Application of Enciabene (40 % N) at 2.5 kg/tree Application of Enciabene at 0.500 kg + urea at 1.75 kg/ tree Application of Enciabene at 0.500 kg +ammonium nitrate at 2L/tree Application of Enciabene at 0.500 kg +ammonium sulfate at 4kg/tree | ||||
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