EFFECT OF AMMONIUM NITRATE AND POTASSIUM HUMATE ON VEGETATIVE GROWTH AND CHEMICAL CONSTITUENTS OF CALOTROPIS PROCERA PLANTS. | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 10, Volume 32, Issue 2, July 2018, Page 103-118 PDF (1.25 MB) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2021.191123 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| S. M. Selim1; Hend, E. Wahba2; Hassanen M. A3; Wafaa M. Abd El- Salam | ||||
| 1Prof. of Floriculture, Medicinal & Aromatic plants, Hort. Dept., Fac. Agric., Fayoum Univ. | ||||
| 2Prof. of Medicinal& Aromatic plants, National Research Center. | ||||
| 3Assistant Prof. of Floriculture, Medicinal & Aromatic plants, Hort. Dept., Fac. Agric., Fayoum Univ. | ||||
| Abstract | ||||
| The present work aimed to study the influence of three gradual rates of nitrogenous fertilizer (ammonium nitrate; NH4NO3) and potassium humate at four doses and their interactions on vegetative growth and chemical constituents of Calotropis procera plants. The obtained results showed that all morphological characteristics i.e. plant height, stem diameter, number of branches and leaves per plant, leaf area per plant, plant fresh and dry weights, root fresh and dry weights were inceased by application of different rates of NH4NO3 and potassium humate fertilizer or their combinations. Also, plants treated with NH4NO3 and potassium humate fertilizers showed a significant increase in the contents of chlorophyll A and B, carotenoids, total carbohydrates(%), N%- P%- K% and total alkaloids of Calotropis procera leaves as compared untreated (control) plant. While total phenolic and total flavonoids contents were decreased with fertilization by different rates of NH4NO3 and potassium humate. The highest values of total phenolic and total flavonoids contents were obtained with applied the lowest fertilizer rates of NH4NO3 (1g/ plant) and potassium humate at zero level. | ||||
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