Combined effects of NPK fertilizer with foliar application of benzyladenine or gibberellic acid on Dracaena marginata ‘Bicolor’ grown in different potting media

Abstract

A pot experiments was carried out to evaluate the influence of growing media and combined treatments of NPK with either benzyladenine or gibberellic acid on growth, chemical constituents and anatomical structure of Dracaena marginata ‘Bicolor’. The plants were grown in two growing media; peat-moss, peat-moss+ sand (1:1, v v-1), received monthly NPK fertilizers (2 and 4 g pot-1) combined with either of benzyl adenine (BA) at 100 and 150 ppm or gibberellic acid (GA3) at 150 and 250 ppm, while the control plants received no treatments. As general, the results indicated that, peat- moss was superior to peat-moss+ sand medium on increasing most of vegetative growth parameters in terms of plant height, number of leaves/plant, leaf area, root length, as well as fresh and dry weights of leaves, stems and roots/plant, besides some macro elements represented in N, P, K, Ca and Mg% in both leaves and stems. While plants grown in peat-moss+ sand possessed significantly higher contents of total chlorophylls, total carbohydrates, Cu, Fe, Mn, Zn and B than those grown in peat- moss alone. Plants received combined NPK with either BA or GA3 resulted in significant increases in most of morphological and chemicals content over the control plants and it was outstanding that, GA3 was more effective than BA when they were combined with NPK. It can be concluded that for the highest quality, quantity growth and economic production of Dracaena marginata ‘Bicolor’, the plants could be grown in a medium of peat-moss and supplied monthly with NPK fertilizer at 2 g plant-1 along with foliar sprayed with 250 ppm GA3.

Standardization of Agro-techniques for Melaleuca bracteata F. Muell

“…Foliar application results in crop growth better, either by stimulating more vigorous regrowth or maximizing the yield potential [7]. Similar results were found by Ashour et al [8] in Dracaena marginata and Gurjar et al [9] in Anthurium andreanum.…”

Role of Bacilli in phytohormone production in rice and grain under different doses of vegetative and generative fertilizer

“…In a study of the addition of NPK 20-20-20 at various doses performed by Mohamed (2018) with Dypsis cabadae, increasing doses of NPK 20-20-20 increased the levels of endogenous IAA and total GAs. A similar result was reported for the addition of NPK 19-19-19 by Ashour et al (2023) with Ervatamia coronaria. There are no available reports on the effect of a variety of chemical fertilization regimens in enhancing endogenous SA.…”

Impact of NPK and Cytokinin on Growth Characteristics and Chemical Composition of Ficus Nitida Plants

“…The study revealed significant impacts on plant height, stem diameter, leaf quantity, leaf area, fresh and dry weight, dry matter percentage, chlorophyll content (including chlorophyll a, b, and total chlorophyll), carotenoids, as well as the percentage of nitrogen, phosphorus, potassium, magnesium, and calcium. The researcher [18] substantiated their findings through a research investigation involving the aromatic Darsina plant. The experiment encompassed the application of varying levels of nitrogen fertilizer (0, 0.5, and 1.5 g of ammonium sulfate per pot) and phosphate fertilizer (0.25, 0.50, and 0.75 g of triple superphosphate per pot) within pots of 20 cm in diameter.…”