Accompanying effects of sewage sludge and pine needle biochar with selected organic additives on the soil and plant variables

Fatima, Bushra; Bibi, Farhana; Ali, Muhammad Ishtiaq; Woods, Jeremy; Ahmad, Mushtaq; Mubashir, Muhammad; Khan, Mohd Shariq; Bokhari, Awais; Khoo, Kuan Shiong

doi:10.1016/j.wasman.2022.08.016

Cited by 8 publications

(3 citation statements)

References 61 publications

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“…Nutrients such as N and S are reduced in biochar at high temperatures (>500 °C) due to volatilization, and upon application in the soil they will be in lower quantities. In addition, because of biochar's recalcitrance, some nutrients are fixed in its complex structure, and due to its difficulty in mineralization, they become slowly available in the soil [80]. As a result, other studies advocated blending biochar with fertilizer [55] or manure [81], and this is because biochar will reduce the loss of nutrients from other sources and facilitate nutrient use efficiency.…”

Section: Soil Physical and Chemical Propertiesmentioning

confidence: 99%

Assessing the Potential of Biochar as a Viable Alternative to Synthetic Fertilizers in Sub-Saharan Africa Smallholder Farming: A Review

Mashamaite,

Motsi,

Manyevere

et al. 2024

Agronomy

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The adverse effects of long-term usage of synthetic fertilizers such as eutrophication, weed infestation, opportunistic diseases, and declining yields have been established. However, the fact that soil fertility declines because of continuous cropping to meet the demand for feeding the ever-growing population, coupled with the high cost of chemical fertilizers, has left little option. This mainly affects resource-poor smallholder farmers, who heavily depend on their production for sustenance and economic well-being. Current research efforts have underscored the urgency of mitigating this trend by seeking a cost-effective and eco-friendly alternative to avert impending global food crises. Biochar has gained attention as a possible alternative to meet the soil requirements on many fronts, such as improving soil functioning and restoring degraded lands. Biochar is also known to reduce heavy metal mobility and inorganic contaminants, mitigating salinity and drought stress as well as greenhouse gas emissions associated with agriculture. However, these studies need to be harmonized to draft a more pragmatic approach to policy formulation and establish an enhanced paradigm. In this paper, we review several studies on biochar and synthesize its possible use as an alternative or supplement to synthetic fertilizers to enhance crop productivity under standard and stressful growing conditions. The ability of biochar to sequester carbon and its impact on soil properties are highlighted. We emphasize its potential for soil nutrient management and the possibility of adopting it as an alternative to synthetic fertilizer in smallholder farming. We also point out several critical research gaps that call for attention and serve as pointers for future research.

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Section: Soil Physical and Chemical Propertiesmentioning

confidence: 99%

Assessing the Potential of Biochar as a Viable Alternative to Synthetic Fertilizers in Sub-Saharan Africa Smallholder Farming: A Review

Mashamaite,

Motsi,

Manyevere

et al. 2024

Agronomy

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show abstract

“…where %PG and WSY are the percent of produced gas and the weight of total solids yields, respectively (Intagun et al, 2018). Biochar production can use a variety of organic materials or waste feedstocks, such as citrus peel fruit (Selvarajoo et al, 2022), sewage sludge, and pine needles (Fatima et al 2022), even microalgae, etc. (Chen et al, 2022).…”

Section: %𝑃𝐺 = 𝑊mentioning

confidence: 99%

Effect of the non-uniform combustion core shape on the biochar production characteristics of the household biomass gasifier stove

Chaiyalap,

Chai-ngam,

Saengprajak

et al. 2023

Int. J. Renew. Energy Dev.

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The global demand for biochar in agricultural and carbon sequestration applications is increasing; nevertheless, biochar production using the 50-liter household biomass gasifier stove (50L-HBGS) in Thailand found major issues that need to be improved. The objective of this study was to study the effects of the airflow in the non-uniform combustion core shape (NCCS) on the biochar production characteristic of the 50L-HBGS. The new design of the NCCS was constructed and studied to replace the existing combustion core shape (ECCS) at Mahasarakham University. The height, air inlet, and air outlet diameters of the NCCS were designed at 45, 24, and 11.4 cm, respectively. The NCCS with 21 holes of the pyrolysis gas outlet, a diameter of 4 mm for each, was integrated into the 50L-HBGS and performed comparative tests to the ECCS using 9 kg of bamboo wood chunks in three consecutive experiments. The airflow and the combustion behavior were studied through the stove temperature profiles, which were recorded every 5 minutes using a digital data logger. The biochar products were studied using the scanning electron microscope (SEM) with the energy dispersive x-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), and the proximate analysis technique. The study indicated that the 50L-HBGS with the NCCS made significantly improved the airflow rates in the combustion core, resulting in better continuous burning during the ignition state than with the ECCS. Moreover, the pyrolysis temperatures were significantly improved, it was provided temperatures during the pyrolysis process reached higher than 500 oC, resulting in the liquid tar being removed and no unburned wood chunks remaining at the end. The characterization result demonstrated that the 50L-HBGS with the NCCS had created biochar within a range of micropore and macrospore sizes and high fixed carbon content, which could be advantageously used for different agricultural and carbon sequestration applications.

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“…To mitigate the adverse effects of abiotic stress on plants, various strategies have been developed, such as the application of exogenous plant growth regulators, like gibberellins, auxins, and cytokinins [8], and the addition of biochar [9,10]. Another approach involves inoculating root-colonizing bacteria into plants, known for their ability to produce plant growth phytohormones [11,12].…”

Section: Introductionmentioning

confidence: 99%

Employing a Plant Probiotic Actinomycete for Growth Promotion of Lettuce (Lactuca sativa L. var. longifolia) Cultivated in a Hydroponic System under Nutrient Limitation

Kitwetch,

Rangseekaew,

Chromkaew

et al. 2023

Plants

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The consumption of lettuce is associated with an increased risk of ingesting nitrate, a naturally occurring and potentially harmful compound that can have adverse effects on human health. Hydroponic cultivation systems serve as effective tools for regulating nutrient solutions and nitrogen availability, which are essential for controlling nitrate levels. However, the techniques for reducing nutrient levels need to be appropriately calibrated based on lettuce growth responses and their interactions with the environment and growing conditions. Previous studies have demonstrated that plant probiotic actinomycetes can alleviate nutritional stress in various crops. However, there is a noticeable gap in research concerning the effects of actinomycetes on hydroponically grown lettuce, particularly under nutrient-limiting conditions. This study aimed to evaluate the effectiveness of the actinomycete Streptomyces thermocarboxydus S3 in enhancing lettuce growth in a nutrient-restricted hydroponic system. The results indicated that the detrimental effects of nutrient stress on lettuce were mitigated by the inoculation of lettuce with S. thermocarboxydus S3. This mitigation was evident in various growth parameters, including leaf count, shoot length, and the fresh and dry weights of both shoots and roots. In the presence of nutritional stress, S. thermocarboxydus S3 likely mitigated the negative effects on lettuce by reducing hydrogen peroxide levels, presumably through the synthesis of H2O2-scavenging enzymes. Furthermore, S. thermocarboxydus S3 successfully survived and colonized lettuce roots. Therefore, the inoculation of lettuce with S. thermocarboxydus S3 offers significant advantages for promoting lettuce growth in nutrient-limited hydroponic systems.

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Accompanying effects of sewage sludge and pine needle biochar with selected organic additives on the soil and plant variables

Cited by 8 publications

References 61 publications

Assessing the Potential of Biochar as a Viable Alternative to Synthetic Fertilizers in Sub-Saharan Africa Smallholder Farming: A Review

Assessing the Potential of Biochar as a Viable Alternative to Synthetic Fertilizers in Sub-Saharan Africa Smallholder Farming: A Review

Effect of the non-uniform combustion core shape on the biochar production characteristics of the household biomass gasifier stove

Employing a Plant Probiotic Actinomycete for Growth Promotion of Lettuce (Lactuca sativa L. var. longifolia) Cultivated in a Hydroponic System under Nutrient Limitation

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