Controlling Growth of Sanchezia Plant by Foliar Application of Micronutrients and Paclobutrazol

Abstract

APOT EXPERIMENT was carried out to evaluate the effect of foliar application of micronutrients mixtures and paclobutrazol on controlling growth of sanchezia plants. The experimental treatments were laid out in a split plot arrangement using a randomized complete block design. Micronutrients mixtures of Zn + Mn + Fe+ B at 50 (C 1 ), 100 (C 2 ) and 150 (C 3 ) ppm of each element were assigned to main plot, while paclobutrazoltreatments; 8, 16, and 24 mgL -1 were allocate to sup-plot. Spraying plants with tap water represent control treatments.Foliar application of micronutrients at the level of C 2 significantlyenhanced plant growth in terms of plant height, stem diameter, root length, leaf area, number of leaves and inflorescences, fresh and dry matter of leaves, shoots, inflorescences and roots. Total chlorophyll, total carbohydrates, Fe, Zn, Mn and B contents of leaves increased in plants sprayed with micronutrients.The most visible effect of paclobutrazol is the decrease in all studied growth traits. Severe retardation of plant growth was evident at 24 mg a.i.L -1 of paclobutrazol. Foliar application of paclobutrazol enhanced total chlorophyll content up to 16 mg L -1 . Plant height, stem diameter and root length linearly decrease with the paclobutrazol concentrations. Application of paclobutrazol at the level of 16 mg L -1 markedly increased total carbohydrates and mineral contents of leaves. The significance interaction between micronutrients and paclobutrazol, especially for plant height and leaf area increase the diversity of potted plants grown for the ornamental plants market.

Production of stunted specimens from Jasminum officinale L. plant

“…Besides, Zamani et al, (2016) indicated that spraying the foliage of rosemary and thuja "Morgan" plants with PP-333 at 1000 and 4000 ppm concentrations increased proline, chlorophyll a and b and total chlorophyll (a + b) content more than control plants. Also, foliar application of PP-333 at 16 mg/l markedly increased total carbohydrates and mineral contents in the leaves of Sanchezia nobilis plants (Heikal, 2017).…”

“…On other ornamentals, many reports were decided by Auda et al, (2002) on Barleria cristata, Barett et al, (2003) on Petunia hybrida and Catharanthus roseus, Shahin et al, (2006) on Rudbeckia hirta, ( 95 ) Mahmoud et al, (2008) on Nerium oleander, Asgarian et al, (2013) on Zinnia, Shahin et al, (2014) on Chrysanthemum carinatum, Noor El-Deen et al, on Gaillardia pulchella, Abou-Dahab et al, (2015) on Russelia equisetiformis, Narayan (2015) on Tagetes erecta, El-Sadek (2016) on Hibiscus rosa-sinensis cv. Yellow, Zamani et al, (2016) on rosemary and Thuja "Morgan" Heikal (2017) on Sanchezia nobilis, Mohammed et al, (2017) on Lagerstroemia indica, Deniz and Omer Faruk (2018) on Fuchsia, Tawila (2018) on Celosia cristata, Naine et al, (2019) on ornamental pepper, Dong et al, (2020) on Paeonia lactiflora, Noor El-Deen (2020) on Ruellia simplex, Shahin and Moustafa (2021) on Althaea rosea and Noor El-Deen and Abou Elghait (2022) on Hibiscus rosasinensis cv. Cooperi.…”