INFLUENCE OF BENZYLADENINE AND KRISTALON FERTILIZER TREATMENTS ON GROWTH AND CHEMICAL CONSTITUENTS OF LEMON CYPRESS (CUPRESSUS MACROCARPA L.) PLANT

Document Type : Original Research Article

Author

Horticulture Department, Faculty of Agriculture, Benha University, Egypt

Abstract

A pot experimental trial was carried out during 2017 and 2018 seasons, to study the effect of 16 treatments, which were represented by the combinations between four concentrations of benzyladenine (BA), i.e. 0, 50, 75 and 100 ppm and kristalon fertilizer rates at 0, 3, 5 and 7 g/pot on the growth and chemical constituents of Cupressus macrocarpa plant. Results declared that all tested concentrations of BA increased plant height, No. of branches/plant, stem diameter, fresh, dry weights of shoots/plant, fresh, dry weights of roots/plant, as well as chemical constituents parameters i.e. N, P and K in the leaves, total carbohydrates, total chlorophylls and carotenoids contents, with an evident for the high rates of benzyladenine compared to untreated control plants in both seasons. On the other hand, all levels of kristalon chemical fertilizer significantly enhanced all the above-mentioned parameters, especially using the high level at 7 g/pot in both seasons. In addition, most of the applied combinations of benzyladenine and levels of kristalon fertilizer improved all the studied parameters in the two seasons, particularly using the combinations between BA at 100 ppm and kristalon fertilizer at 7 g/pot in both seasons. Conclusively, spraying Cupressus macrocarpa plant with benzyladenin at 100 ppm and supplemented with kristalon as chemical fertilizer at 7 g/pot produced the best growth and quality of Cupressus macrocarpa L. plant.

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