Effects of biochar derived from the pyrolysis of either biosolids, manure or spent coffee grounds on the growth, physiology and quality attributes of field-grown lettuce plants

Christou, Anastasis; Stylianou, Marinos; Georgiadou, Egli C.; Gedeon, Stella; Ioannou, Andreas; Michael, Costas; Papanastasiou, Panos; Fotopoulos, Vasileios; Fatta‐Kassinos, Despo

doi:10.1016/j.eti.2021.102263

Cited by 14 publications

(8 citation statements)

References 40 publications

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“…For data on seedling dry mass (Figure 5), there was no significant difference between treatments for lettuce seeds, with an average of 0.008 grams. A similar result was observed in soil correction with coffee grounds biochar, in which there was no difference when evaluating lettuce biomass (Christou et al, 2022). As for sorghum seeds, there was a small increase with the addition of 7.5 and 15% of biochar, and from 15% a decrease in the averages was observed.…”

Section: Resultssupporting

confidence: 79%

Potential of coffee straw biochal as a substrate conditioner in seed lettuce and sorghum germination and vigority

Alixandre,

Lima,

Almeida

et al. 2023

Braz. J. Biol.

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The use of residues from coffee production to obtain biochar is a sustainable approach, which aims to minimize the environmental impact of these materials. In this study, the effect of adding coffee straw biochar on the physiological quality of lettuce and sorghum seeds was investigated. Thus, the objective of this work was to study the effect of adding different concentrations of coffee biochar in the substrate composition on the physiological quality of lettuce (Lactuca sativa) and sorghum (Sorghum bicolor) seeds. The experimental design used was completely randomized, with five concentrations of biochar (0; 7.5; 15; 30 and 60%), conducted with four replications of 25 seeds. The use of biochar in the concentrations studied does not provide an increase in the average germination percentage and vigor of lettuce and sorghum seeds. The increase in the concentration of biochar caused less seed vigor, suggesting a toxic effect. For seed germination, there was no significant difference between lettuce and sorghum species, regardless of treatment. For the germination speed index, sorghum seeds have higher means, except for the treatment with the addition of 15% coffee straw biochar. Lettuce seeds have higher shoot length averages, except for treatment with 100% commercial substrate. The sorghum seeds have higher mean root length and dry mass than lettuce, regardless of the treatment.

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Section: Resultssupporting

confidence: 79%

Potential of coffee straw biochal as a substrate conditioner in seed lettuce and sorghum germination and vigority

Alixandre,

Lima,

Almeida

et al. 2023

Braz. J. Biol.

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“…There was also a reduction in the soluble solids content, but there was an increase in sucrose and fructose present in the lettuce leaves, in addition to the increase in the concentration of total phenolics (451.26 and 414.12 mg GAE/100 g FW). Overall, the results showed that BBF applied as soil amendments can serve to improve the growth and, partially, the nutrition value of lettuce plants [82].…”

Section: Bio-based Fertilizers Applied In Crops and Soilmentioning

confidence: 90%

“…This thermochemical transformation is accompanied by functional modifications resulting in the production of biochar, which is a carbonaceous product characterized by a substantial surface area, a porous structure, and an abundance of functional groups. Various processing techniques can be applied to biochar, resulting in a diverse range of physical and chemical characteristics [81][82][83].…”

Section: Methods For Converting Agri-food Waste Into Bio-based Fertil...mentioning

confidence: 99%

“…Biochar is mainly used as a soil corrector; Christou et al [82] evaluated the effects of applying different biochar, from biosolids, cattle manure and coffee grounds. The lettuce crop grown in the soil treated with these BBFs showed a significant increase in the biomass production rate, evident through high average values of fresh and dry weight.…”

Section: Bio-based Fertilizers Applied In Crops and Soilmentioning

confidence: 99%

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Unlocking the Potential of Agrifood Waste for Sustainable Innovation in Agriculture

Voss,

Valle,

Calcio Gaudino

et al. 2024

Recycling

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The United Nations Environment Programme’s (UNEP’s) Food Waste Index Report 2021 highlights a global annual food waste of 1 billion tons. The UNEP plays a crucial role in achieving Sustainable Development Goal (SDG) 12.3, which aims to halve per capita global food waste (FW) at the retail and consumer levels and reduce food losses along production and supply chains globally by 2030. On the other hand, the agricultural sector faces the challenge of increasing productivity to feed the world’s growing population while reducing the environmental impact on ecosystems and human health. In this context, the conversion of agri-food waste (AFW) into biocides, bio-based fertilizers (BBFs) and biostimulants could represent a successful approach to tackle all these issues. This review shows the latest findings on the different sources of AFW and the application of their bioactive compounds in agriculture. Increasing crop yields and improving plant physiology through the utilization of AFW-derived value products aligns with a circular economy approach, bolstering people’s confidence in managing food waste for improved food production.

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“…Biochar application increased N fixation and total biomass in Trifolium pratense L. (Mia et al, 2014). Numerous studies have informed biochar improved plant nutrients (Ahmed et al, 2021) and physiological traits under unstressed and water stress in many crops (Jabborova et al, 2021a,b,c;Christou et al, 2022). Mannan et al (2021) investigated the application of biochar-enhanced soil nutrients may have enhanced soybean drought tolerance.…”

Section: Introductionmentioning

confidence: 99%

Co-inoculation of biochar and arbuscular mycorrhizae for growth promotion and nutrient fortification in soybean under drought conditions

et al. 2022

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Drought is significant abiotic stress that affects the development and yield of many crops. The present study is to investigate the effect of arbuscular mycorrhizal fungi (AMF) and biochar on root morphological traits, growth, and physiological traits in soybean under water stress. Impact of AMF and biochar on development and root morphological traits in soybean and AMF spores number and the soil enzymes’ activities were studied under drought conditions. After 40 days, plant growth parameters were measured. Drought stress negatively affected soybean growth, root parameters, physiological traits, microbial biomass, and soil enzyme activities. Biochar and AMF individually increase significantly plant growth (plant height, root dry weight, and nodule number), root parameters such as root diameter, root surface area, total root length, root volume, and projected area, total chlorophyll content, and nitrogen content in soybean over to control in water stress. In drought conditions, dual applications of AMF and biochar significantly enhanced shoot and root growth parameters, total chlorophyll, and nitrogen contents in soybean than control. Combined with biochar and AMF positively affects AMF spores number, microbial biomass, and soil enzyme activities in water stress conditions. In drought stress, dual applications of biochar and AMF increase microbial biomass by 28.3%, AMF spores number by 52.0%, alkaline phosphomonoesterase by 45.9%, dehydrogenase by 46.5%, and fluorescein diacetate by 52.2%, activities. The combined application of biochar and AMF enhance growth, root parameters in soybean and soil enzyme activities, and water stress tolerance. Dual applications with biochar and AMF benefit soybean cultivation under water stress conditions.

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Effects of biochar derived from the pyrolysis of either biosolids, manure or spent coffee grounds on the growth, physiology and quality attributes of field-grown lettuce plants

Cited by 14 publications

References 40 publications

Potential of coffee straw biochal as a substrate conditioner in seed lettuce and sorghum germination and vigority

Potential of coffee straw biochal as a substrate conditioner in seed lettuce and sorghum germination and vigority

Unlocking the Potential of Agrifood Waste for Sustainable Innovation in Agriculture

Co-inoculation of biochar and arbuscular mycorrhizae for growth promotion and nutrient fortification in soybean under drought conditions

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