The Beneficial Effects of Insect Pollination and Biochar Seed Coating on Okra (Abelmoschus esculentus) Seed Quality at Varying Temperature Conditions

Adelabu, Dolapo Bola; Franke, A.C.

doi:10.3390/agriculture12101690

Cited by 8 publications

(6 citation statements)

References 40 publications

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“…It has been well documented that biochar exhibits strong moisture uptake and retention properties, mainly attributed to its large, specific surface area and highly porous structure [12,26]. A similar finding was reported by Adelabu and Franke [13], where biochar coating blends had a substantial and positive impact on germination, seedling elongation, and fresh biomass in okra. They hypothesized that since biochar is a carbonaceous organic matter and a source of abundant nutrients, it could result in an increase in plant growth and biomass accumulation by supplying rich nutrition to the seedling embryo during emergence.…”

Section: Discussionsupporting

confidence: 78%

“…[9]. Previous studies have documented that biochar includes smoke-derived substances and growth-promoting compounds, which emit potent chemical signals, facilitating emergence and plant establishment via the enhancement of soil texture and moisture retention ability [13,14]. Furthermore, evidence from field trials has confirmed that biochar as a seed coating agent is favorable for improving rice emergence rate and stand establishment, ultimately maximizing grain yield [9,11] reviewed the literature extensively and concluded that the promotion of stand establishment may be due to the high porosity and large surface area of biochar, which enhances water availability and rich nutrients around the seeds.…”

Section: Introductionmentioning

confidence: 99%

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Biochar Coating as a Cost-Effective Delivery Approach to Promoting Seed Quality, Rice Germination, and Seedling Establishment

Zhang,

Han,

et al. 2023

Plants

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The application of high-quality seeds ensures successful crop establishment, healthy growth, and improved production in both quantity and quality. Recently, biochar-based seed coating has been recognized as a new, effective, and environmentally friendly method to enhance seed quality, seedling uniformity, and nutrient availability. To study the impact of biochar coating on the surface mechanical properties of coated seeds, rice emergence and growth, and related physical and physiological metabolic events, laboratory experiments were performed on two water-saving and drought-resistance rice (WDR) varieties (Huhan1512 and Hanyou73) using biochar formulations with varying contents (20%–60%). The results showed that the appropriate concentration of biochar significantly improved emergence traits and seedling performance of the two rice varieties, compared to the uncoated treatment, and that the optimal percentage of biochar coating was 30% (BC30). On average, across both varieties, BC30 enhanced emergence rate (9.5%), emergence index (42.9%), shoot length (19.5%), root length (23.7%), shoot dry weight (25.1%), and root dry weight (49.8%). The improved germination characteristics and vigorous seedling growth induced by biochar coating were strongly associated with higher water uptake by seeds, increased α-amylase activity and respiration rate, and enhanced accumulation of soluble sugar and soluble protein. Moreover, the evaluation results of mechanical properties related to seed coating quality found that increasing the proportion of biochar in the coating blend decreased the integrity and compressive strength of the coated seeds and reduced the time required for coating disintegration. In conclusion, biochar coating is a cost-effective strategy for enhancing crop seed quality and seedling establishment.

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Section: Discussionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Biochar Coating as a Cost-Effective Delivery Approach to Promoting Seed Quality, Rice Germination, and Seedling Establishment

Zhang,

Han,

et al. 2023

Plants

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“…This could be due to the scarcity of improved seeds. The limited availability of high‐quality seed and, if available, high seed prices of UUCs, such as Bambara groundnut (Muhammad et al., 2020), pearl millet (Revoredo‐Giha et al., 2022), okra (Adelabu & Franke, 2022), sesame, taro mustard, bottle gourd, sorghum, amaranths, and others (Parihar et al., 2010; Tadele, 2019), is a major issue. Furthermore, poor seed performance and low seed quality limit the expansion of cultivated land.…”

Section: Resultsmentioning

confidence: 99%

Status of underutilized crop production: Its potentials for mitigating food insecurity

Adelabu

Franke

2023

Agronomy Journal

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Globally, the gap between the production of nutritious quality crops and their consumption is widening, resulting in high rates of malnutrition and micronutrient deficiencies. Our goal is to examine the rich tapestry of studies on underutilized crops (UUCs) and consider their potential role in alleviating food and nutritional insecurity. Published research articles on UUC were retrieved from databases, such as Web of Science, Google Scholar, and Scopus. The key terms used were “UUC,” “neglected crops,” and lists of UUC, which were frequently cited in literature. A bibliometric innovative approach, such as reference co‐citation, co‐citation, and co‐word analysis, was used. We observed an annual growth rate of 6.4% in UUC research outputs with the number of annual publications increasing from less than 700 article publications in 2000–3000 article publications in 2021. It is also developing into a noticeably interdisciplinary research field with more collaborations and institutional affiliations. The most relevant affiliated countries in UUC‐related studies are developed and transition countries, such as the United States of America, China, India, the United Kingdom, South Africa, Australia, and Germany. The pressing and emerging research studies in UUC‐related studies are genetic diversity and identification, agronomic knowledge, seed improvement, and environmental stresses. There is a shift in the focus of UUC studies, which provides a deeper understanding of the global trends and directions that have evolved in UUC studies over the past two decades. This result provides researchers and policymakers in the field of UUC with a useful tool for decision‐making on UUC.

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“…The literature review of prior studies of biochar-based seed coatings located 10 publications presenting data for 42 comparisons suitable for meta-analysis [25][26][27][42][43][44][45][46][47][48], plus 5 comparisons from the present study. PVAc was the single most common binding agent represented in the data (4 of 11 studies).…”

Section: Meta-analysis Of Pvac Effects On Germination Of Biochar-coat...mentioning

confidence: 99%

Polyvinyl Acetate Binders Undermine the Effectiveness of Biochar-Based Seed Coatings

Thomas,

Liu,

Tang

2024

Preprint

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Pyrolyzed organic matter – commonly referred to as biochar – generally has positive effects on plant growth and can enhance early seedling development. Biochar-based seed coatings may thus be beneficial, specifically under adverse soil conditions such as high soil salinity. We evaluated germination and early plant development in radish (Raphinus sativa) seeds coated with conifer-feedstock slow-pyrolysis biochar; following the precedent of prior studies, polyvinyl acetate (PVAc) was used as the binding agent. Biochar-based seed coatings reduced germination rates and radicle extension in Petri dish trials; however, leaching of coated seeds largely eliminated this effect. PVAc applied in solution inhibited seed germination to a similar extent, suggesting that toxicity of PVAc or chemical products derived from it is the main mechanism for germination inhibition; a meta-analysis of published literature also indicates negative effects of biochar-based seed coatings using PVAc. In greenhouse trials the same biochar seed coatings improved aspects of plant growth and physiological status relative to controls, specifically enhancing root development. We conclude that biochar-based seed coatings have promise in promoting early seedling growth, and in combating salinity stress in agronomic and restoration applications. However, our findings contraindicate PVAc use as a binding agent. Further research is needed to test non-phytotoxic, readily biodegradable binding agents and to optimize biochars and seed coating processes for specific applications in agronomy and ecological restoration.

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The Beneficial Effects of Insect Pollination and Biochar Seed Coating on Okra (Abelmoschus esculentus) Seed Quality at Varying Temperature Conditions

Cited by 8 publications

References 40 publications

Biochar Coating as a Cost-Effective Delivery Approach to Promoting Seed Quality, Rice Germination, and Seedling Establishment

Biochar Coating as a Cost-Effective Delivery Approach to Promoting Seed Quality, Rice Germination, and Seedling Establishment

Status of underutilized crop production: Its potentials for mitigating food insecurity

Polyvinyl Acetate Binders Undermine the Effectiveness of Biochar-Based Seed Coatings

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