Amelioration of Horticultural Growing Media Properties Through Rice Hull Biochar Incorporation

Kim, Hyuck Soo; Kim, Kwon Rae; Yang, Jae E.; Ok, Yong Sik; Kim, Won Il; Kunhikrishnan, Anitha; Kim, Kye Hoon

doi:10.1007/s12649-016-9588-z

Cited by 33 publications

(15 citation statements)

References 47 publications

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“…Leaf number did not change among treatments and the decreased seedling height in case of Biochar A+Fert at 15% and Biochar D at 7.5% is not necessarily negative, as shorter (dwarf) plants are often desirable due to easy handling, transport and storage under nursery enterprises. Similar to our findings, Kim et al [61] reported a 150% increase in shoot dry weight of kale (Brassica olereaseae L. var. acephala) when Biochar from rice husk was added at 5% to coir dust, perlite and verlmiculite.…”

Section: Discussionsupporting

confidence: 92%

“…Phosphorus accumulation followed the K trend for the examined growing media. Kim et al [61] also reported increase of N, P and K content in kale shoots when Biochar was mixed at various ratios with the growing media. Similarly, increased K and P contents were found when Syngonium podophyllum was grown in different Biochar-based media, and this was related to the higher levels of these elements in the growing media [53].…”

Section: Discussionmentioning

confidence: 91%

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Biochar Type and Ratio as a Peat Additive/Partial Peat Replacement in Growing Media for Cabbage Seedling Production

et al. 2019

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Biochar has been proposed mainly as a soil amendment, positively affecting plant growth/yield, and to a lesser degree for growing media. In this study, four commercial grade biochars (A-forest wood; B-husks and paper fiber; C-bamboo and D-fresh wood screening), mostly wood-based materials, were selected. Initial mixtures of peat (P) with different Biochar type and ratios (0-5-10-15-20%) were selected for cabbage seedling production. Biochar material had high K content and pH ≥ 8.64 which resulted in increased pH of the growing media. Biochar A and C at 20% reduced cabbage seed emergence. Biochar A, B and D maintained or improved plant growth at low ratio (i.e., 5–10%) while all Biochars increased N, K and P content in leaves. Biochars A and D were further examined at 7.5% and 15% with the addition of two doses of minerals (1-fold and 1.5-fold). Biochar A and D, initially stimulated seed emergence when compared to the control. High dose of fertilizer favored plant growth in Biochar A at 7.5% and Biochar D at 15%. Leaf stomatal conductance was decreased at Biochar A+Fert at 7.5% and Chlorophyll b content was decreased at Biochar A+Fert at 15%. The presence of Biochar A increased the antioxidant activity (as assayed by 2,2-diphenyl-1-picrylhydrazyl-DPPH). Lipid peroxidation was higher in plants grown with fertilized peat and Biochar A at 15%, activating antioxidant enzymatic metabolisms. Potassium, phosphorous and copper accumulation and magnesium deficiency in cabbage leaves were related to the Biochar presence. Wooden biochar of beech, spruce and pine species (Biochar A) at 7.5% and fertilized biochar of fruit trees and hedges (Biochar D) were more promising for peat replacement for cabbage seedling production.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 91%

Biochar Type and Ratio as a Peat Additive/Partial Peat Replacement in Growing Media for Cabbage Seedling Production

et al. 2019

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“…This may enhance the uptake of nutrients by plant. Furthermore, comparable mechanism for improving the uptake of macronutrients by maize plants in soil treated with biochar were described by Kim et al [43], Lee et al [44] and Rehman et al [45]. In our study, even though a higher amount of leaves K content, regularly implicated in the photosynthetic process, is positively correlated to percentage of biochar in the growing media, the highest leaves K levels were collected in plants grown on substrates with biochar at 70%.…”

Section: Discussionsupporting

confidence: 87%

Poplar Biochar as an Alternative Substrate for Curly Endive Cultivated in a Soilless System

et al. 2020

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Imminent necessity for eco-friendly and low-cost substitutes to peat is a defiance in the soilless plant cultivation systems. Wood biochar could entirely or partly substitute peat as a plant growing constituent to produce vegetables. Nevertheless, knowledge concerning potential plant performance of leafy green vegetables grown on wood biochar is restricted. The present study assessed the main physicochemical traits of various growing media constituted by decreasing the content of peat and by increasing the percentages of poplar wood biochar. Yield, nutritional and functional properties of curly endive plants cultivated in a protected environment were also tested. Biochar was pyrolyzed from poplar (Populus nigra L.) at 450 or 700 °C for 48 h. Increasing biochar concentration and pyrolysis temperature resulted in higher pH, EC and K content of the growing mediums. Biochar was also effective in increasing particle density and bulk density. Biochar at 70% and pyrolysis temperature of 450 °C significantly increased head fresh weight by 47.4%, head height by 24.9%, stem diameter by 21.5% and number of leaves by 80.8%, respectively compared with the control (100% peat). Head dry matter content, root dry matter content, SSC, ascorbic acid and total phenolic were also significantly affected by this treatment. Furthermore, the addition of biochar and the use of higher pyrolysis temperature decreased N leaves concentration. This represents a particularly important target for leafy green vegetables healthiness.

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“…Furthermore, since they are characterized by a high porosity and a high water-holding capacity, these materials may also be usable as a substitute for constituents, which are already established in the growing media market, but which have a limited supply [25,147,148]. For instance, rice hull-derived biochar would be a practically applicable amendment to improve the properties of growing media, in terms of an increased cation exchange capacity and water content [149]. The typically high porosity and surface area of biochars promote the retention of water and the sorption of nutrients [25].…”

Section: Greenhouse Ornamental Productionmentioning

confidence: 99%

Increasing Sustainability of Growing Media Constituents and Stand-Alone Substrates in Soilless Culture Systems

2019

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Decreasing arable land, rising urbanization, water scarcity, and climate change exert pressure on agricultural producers. Moving from soil to soilless culture systems can improve water use efficiency, especially in closed-loop systems with a recirculating water/nutrient solution that recaptures the drain water for reuse. However, the question of alternative materials to peat and rockwool, as horticultural substrates, has become increasingly important, due to the despoiling of ecologically important peat bog areas and a pervasive waste problem. In this paper, we provide a comprehensive critical review of current developments in soilless culture, growing media, and future options of using different materials other than peat and rockwool. Apart from growing media properties and their performance from the point of view of plant production, economic and environmental factors are also important. Climate change, CO 2 emissions, and other ecological issues will determine and drive the development of soilless culture systems and the choice of growing media in the near future. Bioresources, e.g., treated and untreated waste, as well as renewable raw materials, have great potential to be used as growing media constituents and stand-alone substrates. A waste management strategy aimed at reducing, reusing, and recycling should be further and stronger applied in soilless culture systems. We concluded that the growing media of the future must be available, affordable, and sustainable and meet both quality and environmental requirements from growers and society, respectively.

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Amelioration of Horticultural Growing Media Properties Through Rice Hull Biochar Incorporation

Cited by 33 publications

References 47 publications

Biochar Type and Ratio as a Peat Additive/Partial Peat Replacement in Growing Media for Cabbage Seedling Production

Biochar Type and Ratio as a Peat Additive/Partial Peat Replacement in Growing Media for Cabbage Seedling Production

Poplar Biochar as an Alternative Substrate for Curly Endive Cultivated in a Soilless System

Increasing Sustainability of Growing Media Constituents and Stand-Alone Substrates in Soilless Culture Systems

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