Effect of Seaweed-Based Biostimulants on Growth and Development of Hydrangea paniculata under Continuous or Periodic Drought Stress

Clercq, Paulien De; Pauwels, Els; Top, Seppe; Steppe, Kathy; Labeke, Marie-Christine Van

doi:10.3390/horticulturae9040509

Cited by 5 publications

(6 citation statements)

References 54 publications

(81 reference statements)

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“…When used in urban and urbanised environments, Bistep biostimulant treatment can greatly improve the resistance and physical properties of the variety (stronger, thicker leaves), which is also an outstanding ornamental feature. These results are similar to results measured with other shrub species [17][18][19][20]. The results of Werner and Lefi [10,11] showed that a high phytohormonal activity was observed for the Kelpak ® algal product.…”

Section: Discussionsupporting

confidence: 89%

“…The results with Photinia 'Red Robin', commonly used in urban environments, are similar to those with W. florida 'Eva Rathke', where [17] found no suitability for Kelpak ® in ornamental nursery containers. The results are similar to those obtained with Hydrangea paniculata, also an ornamental shrub [20].…”

Section: Discussionsupporting

confidence: 87%

“…Szabó et al [18], on the other hand, reported higher rooting rates and higher fresh cutting weights in Prunus 'Marianna' plants using Kelpak ® (KELP PRODUCTS (PTY) Ltd. 7975 Simon's Town, Blue Water Close, South Africa), while roses showed an improvement in rooting properties [19]. However, E. maxima negatively affected branching properties in container-grown Hydrangea paniculata [20].…”

Section: Introductionmentioning

confidence: 99%

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Morphological and Physiological Responses of Weigela florida ‘Eva Rathke’ to Biostimulants and Growth Promoters

Kovács,

Horotán,

Orlóci

et al. 2024

Horticulturae

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Ornamental horticulture and breeding, as well as urban landscape architecture, are facing increasing challenges driven by an intensely changing climate and urbanisation. The expansion of cities should be combined with an overall growth of green spaces, where ornamental plant species and cultivars will have to withstand a diverse range of environmental conditions, whereby they are often exposed to multiple stress factors. One of the most widely used ornamental shrub species Weigela florida ‘Eva Rathke’ was treated with the growth promoters Bistep with humic and fulvic acid, Kelpak® seaweed extract, and Yeald Plus with a high zinc content to test their applicability in a plant nursery. Bistep decreased the physiological parameters (the transpiration rate by 60%, the evapotranspiration rate by 56.5%, and the proline stress enzyme content level by 82.2%), indicating the stress level of the treated plants. The activity of β-glucosidase decreased with all growth-promoting treatments (11.5% for Kelpak and 9.5% for Yeald Plus), as did β-glucosaminidase (22.1% for Kelpak and 9.8% for Yeald Plus), but Bistep treatment reduced the activity of the enzymes less (9.9% for β-glucosidase and 3.3% for β-glucosaminidase). The measured alkaline phosphatase enzyme activity increased with treatment (by 10.7% for Kelpak, 11.7% for Yeald Plus, and 12.63% for Bistep). Based on the results, it was concluded that Bistep and Yeald Plus may be suitable for use in the studied variety, whereas Kelpak® may not be suggested in plant nurseries for growing W. florida ‘Eva Rathke’ plants.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Morphological and Physiological Responses of Weigela florida ‘Eva Rathke’ to Biostimulants and Growth Promoters

Kovács,

Horotán,

Orlóci

et al. 2024

Horticulturae

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“…Seaweed extracts contain plant hormones, such as cytokinins and auxins, which advance cell division during the early stages of plant growth and can induce early and more vigorous flower formation [41]. There are many reports on the beneficial effects of A. nodosum extracts on reproductive phenology, fruit production, and quality in different crops [59,60], including that of Phylgreen ® [61,62]. In our study, the two biostimulants tested favoured flowering, increasing the number of flowers formed in plants irrigated at field capacity.…”

Section: Discussionmentioning

confidence: 99%

Effect of Two Biostimulants, Based on Ascophyllum nodosum Extracts, on Strawberry Performance under Mild Drought Stress

Shakya,

Capilla,

Torres-Pagán

et al. 2023

Agriculture

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The world’s population continues to grow while available natural resources, such as arable land, water, and quality soil, are decreasing. Therefore, it is essential to implement environmentally friendly crop management strategies, which include the use of biostimulants. This study analysed the effects on strawberry plants of ActyseiTM and Phylgreen®, two commercial biostimulants based on extracts of the seaweed Ascophyllum nodosum. The study was conducted under field capacity (regular irrigation) and at 50% field capacity (mild water stress conditions) for 12 weeks. Different growth parameters of the aerial parts of the plants were measured weekly, such as the number of leaves, length of the longest leaf, leaf area, and the number of flowers and fruits produced, as well as the chlorophyll content, determined with a single-photon avalanche diode (SPAD) detector. At the end of the experiment, the plant material was collected, and the roots and aerial parts were weighed separately to obtain the fresh and dry weight of the samples. Fruit quality was assessed by analysing morphological parameters (weight and size) and some biochemical variables (proline, total soluble sugars, and antioxidant compounds contents). ActyseiTM application generally enhanced plant growth in control plants and under mild water stress conditions, even though root weight was reduced. In contrast, no significant effect of Phylgreen® on vegetative growth was observed, except for stimulating the root growth of plants watered at field capacity. Both biostimulants, Phylgreen® to a greater extent, showed an impact on the plants already seven weeks after their initial application, stimulating flower and fruit production, especially at field capacity.

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“…Standard soil application of fertilizers in nursery production can also be supported with appropriate biostimulants. Annual hydrangea plants exposed to water stress were treated with seaweed-based biostimulants in an attempt to reduce the stress [33]. The plants of Hydrangea paniculata treated with the biostimulants had the same number of branches and the same fresh weight as those that were not exposed to the stress.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Combined Pruning and the Use of Root Application of Two Biostimulants and Foliar Nutrition on the Growth and Flowering of Panicle Hydrangea Plants

Świerczyński,

Świerczyńska

2024

Agronomy

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The aim of this experiment was to assess how the interaction of two treatments influenced the growth and flowering of two varieties of Panicle hydrangea shrubs. The first treatment was plant pruning. Simultaneously, the plants received one of the three following treatments: root application of Trichoderma atroviride, root application of BlackJak biostimulant, or foliar application of a multi-component fertilizer. Simultaneous pruning and inoculation of the plants with the Trichoderma atroviride mycelium improved the length of hydrangea shoots the most, as compared with the control plants (18%). These two treatments also increased the number of flowers (16–47%, depending on the variety) and the fresh weight of plants (10–28%) compared with the control plants. T. atroviride alone improved the number of flowers in both varieties (19–24%) and the diameter of inflorescences in the ‘Silver Dollar’ one (17%). The foliar nutrition increased the fresh weight of plants by 7–57%, depending on the cultivar and pruning. It also increased the diameter and number of inflorescences in one of the varieties. Together with pruning, it intensified the growth of shoots in both cultivars (5–10%). The BlackJak biostimulant treatment gave ambiguous results. In combination with pruning, it improved the length of shoots (15%) in one cultivar and the fresh weight in the other (18%). Without pruning, the treatment increased the number of flowers (16%) and the diameter of inflorescences (9%) in one cultivar. It increased the fresh weight of plants in both cultivars (19–21%). Regardless of the other treatments, pruning increased the length of the shoots and the fresh weight of the plants. On the other hand, it reduced the number of flowers and their diameter. In most cases, the biostimulant treatment and foliar fertilization improved the growth and flowering of the plants. In combination with pruning, they improved the growth of the hydrangea shrubs but reduced the number and diameter of flowers. The simultaneous Ta treatment and pruning were the most beneficial for the growth and flowering of the panicled hydrangea plants grown in containers in a nursery.

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Effect of Seaweed-Based Biostimulants on Growth and Development of Hydrangea paniculata under Continuous or Periodic Drought Stress

Cited by 5 publications

References 54 publications

Morphological and Physiological Responses of Weigela florida ‘Eva Rathke’ to Biostimulants and Growth Promoters

Morphological and Physiological Responses of Weigela florida ‘Eva Rathke’ to Biostimulants and Growth Promoters

Effect of Two Biostimulants, Based on Ascophyllum nodosum Extracts, on Strawberry Performance under Mild Drought Stress

The Influence of Combined Pruning and the Use of Root Application of Two Biostimulants and Foliar Nutrition on the Growth and Flowering of Panicle Hydrangea Plants

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