Effect of Compost and Some Stimultory Substances on Gladiolus Plant A. Vegetative Growth and Flowering Characters

Abstract

to study the effect of compost (7.5, 10.0 and 12.5 ton/fed) and seven treatments of stimulants i.e. control, seaweeds extract (300 ppm), amino acids (200 ppm), ascorbic acid (100 ppm), salicylic acid (50 ppm), active yeast (5 g/l) and Minia azotein (50 ml/plant), as well as their interaction on vegetative growth and flowering parameters of gladiolus plants. Data resulted that all compost levels increased vegetative growth parameters (leaf length, number of leaves/plant and leaves dry weight), flowering aspects (spike length, spike diameter, spike fresh weight, number of florets/plant, lower floret diameter and single floret fresh weight) comparing with control. Compost at 12.5 ton/fed was the most effective in this concern. All six used treatments of stimulant substances led to significant increase in all previous characters as compared to control, the maximum values were obtained by amino acids, followed by active yeast. The interaction treatments were significant with, the highest values recorded due to compost (12.5 ton/fed) in combination with either amino acids or active yeast.

Stimulative Effects of Seaweed and Active Yeast Extracts as Foliar Treatments on Growth and Productivity of Gladiolus Grandiflorus Andrews ‘White Prosperity’

“…In accordance with our results, Khattab et al (2016) recommended treating gladiolus Gladiolus grandiflorus 'Rose Supreme' with yeast extract at 5 to 10 g/l for high-quality corms production. A similar stimulative trend for yeast extract at concentrations ranging from 4 to 6 g/l was also observed by Abdou et al (2021) and Manoly and Nasr (2008) on vegetative growth parameters, flowering aspects, corm production and chemical constituents of gladiolus plants. Al-Shewailly (2020) recorded a significant effect of active yeast extract at 7 g/l on plant height, leaf area, the number of days required for the flowering and the duration of the flowering period.…”

“…However, the combination of yeast at 5 g/l and SWE at 50 ppm produced the highest number of cormels/corm. Several previous studies reported significant enhancement of vegetative growth parameters and flowering aspects of various cultivars of gladiolus in response to the foliar application of SWE at 300 ppm (Abdou et al, 2021;Al-Saad, 2020;Mazrou, 2019;Pansuriya et al, 2018a and b). Similar results were reported for the effect of SWE on other bulbous plants such as Hippeastrum hybridum cv.…”

“…Several authors proved that SWE has a plant growth-promoting effect and it has shown favorable effects on vegetative growth, flowering and productivity of many plant species (Ibrahim, 2020). Gladiolus growth and flowering showed a positive response to the application of SWE (Abdou et al, 2021;Al-Saad, 2020;Mazrou, 2019;Pansuriya et al, 2018a and b). Many other bulbous plants exhibited also similar responses such as Hippeastrum hybridum cv.…”