Plant Biostimulants in Vermicomposts

Wong, Wei Chang; Zhong, Hongtao; Cross, Adam T.; Yong, Jean Wan Hong

doi:10.1002/9781119357254.ch6

Cited by 14 publications

(9 citation statements)

References 129 publications

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“…During vermicomposting, earthworms and microbial diversity contribute plant growth hormone-like compounds (such as fulvic acid or humic acid) to organic materials. The presence of plant growth regulators (PGR) in vermicompost has been proposed as one element that may lead to higher plant growth and production [22].…”

Section: Discussionmentioning

confidence: 99%

The effect of vermicompost and K+amino on the winter rape growth

Olle

2023

Eureka: LS

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Vermicompost contains a high concentration of macro- and micronutrients, vitamins, growth hormones, enzymes such as proteases, amylases, lipases, cellulases, and chitinases, as well as immobilized microflora. Vermicompost improves plant germination, growth, biomass, and yield. K+amino is a biologically active liquid soil amendment that is suitable for organic gardens of all types. It is a 100 % veganic growth- and health-promoting liquid microbial inoculant for all plant types, particularly fast-growing crops like vegetables, fruits, and blooms. The purpose of investigation was to look the effect of vermicompost and k+amino on the winter rape germination and growth. Methods: There were six treatments: 1. A rape (means a rape crop in Aru Agricultural Ltd. soil), 2. A rape+YaraBela AXAN 0.3g per pot, 3. A rape+vermicompost 7.9 g per pot in the soil+the vermiextract is sprayed on the plants 1 week after sowing, 2 weeks after sowing, both treatments 1:30, 33 ml extract per 1 L water, 4. A rape+vermicompost 7.9 g per pot in the soil, 5. A rape+vermiextract is sprayed on the plants 1 week after sowing, 2 weeks after sowing, both treatments 1:30, 33 ml extract per 1 L water, 6. A rape+K+Amino biostimulator is sprayed on the plants 1 week after sowing, 2 weeks after sowing, both treatments 5 ml K+Amino per 1 L water. Results: Rape plants were elongated in treatment with YaraBela AXAN. Stem diameter was largest in K+Amino treatment. Root length was lowest in treatment with vermicompst extract (soil was too moisty and compacted). Conclusions: Vermicompost tended to improve plant growth, while stem diameter was largely increased by using k+amino fertilizer. It turns out both actually are good sources of mineral nutrients and also different enzymes and microbes, which help plants grow

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Section: Discussionmentioning

confidence: 99%

The effect of vermicompost and K+amino on the winter rape growth

Olle

2023

Eureka: LS

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“…Humic acids (HAs) are a subset of a broader category of humic substances (HSs) and comprise a biologically active fraction characterized by being soluble in alkaline media and insoluble in acidic media (García et al, 2016). In addition to being able to modify the physical, chemical and biological properties of the soil, these compounds can alter plant hormonal metabolism resulting in the acceleration of plant growth and development, root elongation, increase in germination rates, mitigation of osmotic and heavy metal stress, and increase in biomass (Trevisan et al, 2011;Baldotto and Baldotto, 2014;Canellas et al, 2015;Nardi et al, 2017;Shah et al, 2018;Wong et al, 2020). Furthermore, they can also modify the metabolic profile of plant defenses, which promotes greater resistance against insects (Schiavon et al, 2010;Razmjou et al, 2011).…”

Section: Humic Substances and Humic Acidsmentioning

confidence: 99%

The Effects of Biostimulants on Induced Plant Defense

et al. 2021

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The search for innovative and alternative methods for chemical control to manage pests is an increasingly growing reality. The use of biostimulants such as plant growth promoting rhizobacteria (PGPR) and humic acids (HA) has been shown to improve many agronomic characteristics of plants while increasing yield. These biostimulants also alter the production of secondary metabolites with consequences for insect herbivores. Here we review the role of biostimulants such as PGPR and HA in promoting and eliciting plant defenses. The cascading effects of using these biostimulants on insect herbivores and their natural enemies are discussed in this context. Synergism between biostimulants are also discussed. The potential role of these products in augmenting agricultural productivity is highlighted as is further need for additional research. This review highlights the potential of this tool to enhance integrated pest management in agricultural production systems, reduce the use of pesticides, and increase the efficiency of fertilization while supporting healthier more pest-resistant plants.

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“…Soil microorganisms also help increase plant resistance against drought stress via various mechanisms (de Vries et al, 2020; Ngumbi & Kloepper, 2016; Tobar et al, 1994; Zhao et al, 2015). Use of microbial inoculants and organic amendments to achieve sustainable agriculture is also being advocated (Abbott et al, 2018; Backer et al, 2018; de Vries et al, 2020; Finkel et al, 2017; Wong et al, 2020) as the understanding of beneficial plant–microbe interactions is increasing with research and technological advances. Likewise, these beneficial interactions could be exploited to improve mine site vegetation restoration through increasing rhizospheric nutrient and bioactive metabolite availability, improved plant nutrient and water uptake and increased stress tolerance.…”

Section: Introductionmentioning

confidence: 99%

“…As facilitators of plant–microbe interactions, phytohormones are involved in many belowground interactions between roots, soil and the microbiome, mediating microbial symbiosis, root morphology, nutrient acquisition, plant growth, resilience and immunity to diseases (de Vries et al, 2020; Naseem et al, 2014; Ngumbi & Kloepper, 2016; Pérez‐Montaño et al, 2014; Wong et al, 2020). Our understanding of the communication pathway for phytohormones along this soil–microbe–root–shoot continuum is improving.…”

Section: Introductionmentioning

confidence: 99%

Microbial inoculation to improve plant performance in mine‐waste substrates: A test using pigeon pea (Cajanus cajan)

et al. 2022

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Mining activities alter soil physicochemical and biological properties that are critical for plant establishment. Revitalisation of soil biological properties via microbial inoculations can potentially be adopted to improve vegetation restoration. Here, we evaluate the feasibility of using beneficial microorganisms in the form of commercially available inoculants to enhance plant performance in a non‐toxic and infertile mine‐waste substrate, using pigeon pea [Cajanus cajan (L) Millsp.] as a test plant. Six treatments were established to investigate the effects of inoculants (Bradyrhizobium spp., microbial mix and uninoculated controls) and water availability (low and moderate) in a factorial design over 6 months. Plant performance was determined by physiological parameters (leaf gas exchange, leaf carbon, nitrogen and stable isotopes) and growth (height and biomass). Plant xylem sap phytohormones were measured to determine the plants' physiological status and effects of inoculation treatments. Results revealed that water had a greater effect on plant growth than inoculation treatments. Inoculation treatments, however, improved some physiological parameters. This study suggests that physical conditions such as soil moisture and nutrient availability may occlude more subtle (direct or interactive) effects of beneficial soil microbes on plant growth and plant condition. Prior knowledge on the biological and physicochemical properties of the soil to be amended, and on plant species‐specific responses, would be needed to customise microbial inoculants for maximum benefits to ecological restoration, to support future adoption of this practice.

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Plant Biostimulants in Vermicomposts

Cited by 14 publications

References 129 publications

The effect of vermicompost and K+amino on the winter rape growth

The effect of vermicompost and K+amino on the winter rape growth

The Effects of Biostimulants on Induced Plant Defense

Microbial inoculation to improve plant performance in mine‐waste substrates: A test using pigeon pea (Cajanus cajan)

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