Properties of Substrates With Ground Pine Bark

Lemaire, F.; Dartigues, A.; Rivière, L.M.

doi:10.17660/actahortic.1980.99.9

Cited by 12 publications

(7 citation statements)

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“…Media mainly composed of bark, wood chips, or wood fiber are characterized by high air content and low water retention (Lemaire et al, 1980), although bark particles can hold water internally and this can be accessed by plant roots (Pokorny and Wetzstein, 1984). Bark may be used raw, but in most cases bark is aged or more commonly composted to eliminate hydrophobicity, degrade antimicrobial compounds that may be present, and to reduce N immobilization (Solbraa, 1979).…”

Section: Physical Propertiesmentioning

confidence: 99%

Organic Growing Media: Constituents and Properties

Carlile

Cattivello²,

Zaccheo

2015

Vadose Zone Journal

104

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Organic growing media are essentially bulk products. Availability in large quantity allied to its excellent air and water retention, low pH and salinity, and freedom from pests and diseases has led to peat being the dominant organic constituent of growing media in many parts of the world for the last 50 yr. The unique microporous properties of Sphagnum peat and its resistance to degradation are matched by few other growing media constituents. Nevertheless, local scarcity of Sphagnum peat and the expense of transport has led to the use of other materials in growing media. Notable among these is coir, which unlike peat, a CO2 sink, is widely regarded as a rapidly renewable resource. Indeed, advances in processing and quality control in situ have led to a huge upsurge in the export and use of coir in growing media, particularly in Europe but also in the western United States. Locally available organic materials such as bark, composted materials including green (yard) wastes, municipal solid wastes, and even sewage sludge are also used in growing media. While possessing advantages such as the high air content of bark and nutrient supply of many composted materials, these media components may have disadvantages, from limited supplies due to bioenergy pulls and N lock‐up in bark, to physical, chemical, and microbial contaminants in composts. Current innovative approaches involve increasing use of wood fiber in Europe, whole pine‐tree thinnings in the United States, and realizing the use and transformation of composted wastes as next‐generation constituents of growing media.

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Section: Physical Propertiesmentioning

confidence: 99%

Organic Growing Media: Constituents and Properties

Carlile

Cattivello²,

Zaccheo

2015

Vadose Zone Journal

104

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“…This could be related to perlite since when it was changed by pine bark, the ion leaching was lower. Pine bark in the mix may reduce ion leaching due to its high cation exchange capacity (CEC) [ 16 ]. On the last three sampling dates, leachate EC was greater in the mix of coir + biochar + pine bark.…”

Section: Resultsmentioning

confidence: 99%

“…However, the cation exchange capacity of the pine bark rose with decreasing particle size [ 13 ]. Furthermore, it has a low bulk density [ 15 ] and water-holding capacity [ 14 ], as well as good stability [ 16 ]. Perlite is neutral and it has no buffering capacity and contains no mineral nutrients.…”

Section: Introductionmentioning

confidence: 99%

Effects of Coir-Based Growing Medium with Municipal Solid Waste Compost or Biochar on Plant Growth, Mineral Nutrition, and Accumulation of Phytochemicals in Spinach

Machado

Alves-Pereira

Morais

et al. 2022

Plants

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The use of municipal solid waste compost (MSW) and biochar, two renewable resources with a low carbon footprint as components of substrates, may be an alternative to reducing peat and coir usage. The aim of this study was to assess the suitability of selectively collected MSW and biochar as components of the coir-based substrate to spinach grown. An experiment was carried out to evaluate five substrates, coir and four coir-based blends (coir + biochar + perlite, coir + municipal waste compost + perlite, coir + biochar + pine bark, and coir + biochar + pine bark) with 12% (v/v) MSW or biochar and 10% (v/v) perlite or pine bark. Spinach seedlings were transplanted into Styrofoam planting boxes filled with the substrate. Each planting box was irrigated daily by drip with a complete nutrient solution. Plants grown with MSW had a higher content of calcium. Shoot Mn increased in the biochar-containing mixes. The shoot dry weight of the plants grown in the different blends was higher than those grown in coir. Fresh yield was higher in mixes with MSW and perlite (3 kg/m2) or pine bark (2.87 kg/m2). Total phenols and DPPH antioxidant activity were not affected by the substrates. However, shoot ascorbate (AsA) content was higher or equal to those plants grown in coir. MSW and biochar are alternatives to reduce the use of coir and peat.

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“…The formation/engineering of substrates for greenhouse and nursery crop production has been achieved several times since soilless media began being the primary substrate in container production including the University of California (UC) mixes (Matkin and Chandler, 1957), Cornell ''Peat-lite'' mixes (Boodley and Sheldrake, 1964), and PB-based substrates (Krafka and Pokorny, 1979;Henny, 1984a, 1984b). Research with PB has thoroughly described the construction/engineering of 100% PB substrates and how its physical properties change when amended with other organic materials Lemaire et al, 1980;Nkongolo et al, 2000;Tyler et al, 1993), mineral aggregates (Owen et al, 2007), clay (Handreck and Black, 2005), and inorganic materials (Brown and Pokorny, 1975;Raviv and Lieth, 2008). One cannot assume that wood-based substrates have the same physical properties as PB (aged or fresh) when constructed/formulated into a container substrate.…”

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confidence: 99%

Methods of Constructing a Pine Tree Substrate from Various Wood Particle Sizes, Organic Amendments, and Sand for Desired Physical Properties and Plant Growth

Jackson¹,

Wright²,

Barnes³

2010

horts

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The use of freshly harvested and processed pine trees as a container substrate for greenhouse and nursery crop production is a relatively new concept, and fundamental knowledge of the construction of a pine tree substrate (PTS) for optimal physical properties is insufficient. Therefore, this research was conducted to determine the influence of mixing PTSs produced with different wood particle sizes and adding other amendments to PTS on substrate physical properties and plant growth compared with traditional substrates. Coarse pine wood chips produced from 15-year-old loblolly pine trees (Pinus taeda L.) were ground in a hammermill fitted with either a 4.76-mm screen or with no screen (PTS-NS) allowing a fine and a coarse particle PTS to be produced. Increasing proportions of the finer (4.76-mm) PTS to the coarser PTS (PTS-NS) resulted in increased container capacity (CC) and shoot growth of ‘Inca Gold’ marigold (Tagetes erecta L.). In another study, PTSs were manufactured in a hammermill fitted with different screen sizes: 4.76, 6.35, 9.54, or 15.8 mm as well as PTS-NS. After being hammermilled, each of the five PTSs was then amended (by mixing) with 10% sand (PTS-S), 25% peatmoss (PTS-PM), or left unamended. Pine tree substrates were also produced by adding 25% aged pine bark (PB) to pine wood chips before being ground in a hammermill with each of the five screen sizes mentioned (PTS-HPB). These five substrates were used unamended as well as amended with 10% sand after grinding (PTS-HPBS). Control treatments included peat-lite (PL) and 100% aged PB for a total of 27 substrates evaluated in this study. Container capacity and marigold growth increased as screen size decreased and with the additions of peatmoss (PTS-PM) or hammering with PB (PTS-HPB) to PTS. Container capacity for all substrates amended with peatmoss or PB was within the recommended range of 45% to 65% for container substrates, but only with the more finely ground PTS-4.76-mm resulted in marigold growth comparable to PL and PB. However, when the PTS-NS was amended by mixing in 25% peat or hammering with 25% PB, growth of marigold was equal to plants grown in PL or PB. In a third study, hammering PTS-NS with 25% PB followed by the addition of 10% sand increased dry weight of both azalea (Rhododendron ×hybrida ‘Girard Pleasant White’) and spirea (Spiraea nipponica Maxim. ‘Snowmound’) resulting in growth equal to plants grown in 100% PB. This work shows that amending coarsely ground PTS with finer particle PTS or with other materials (peatmoss, aged PB, or sand) can result in a substrate with comparable physical properties such as CC and plant growth compared with 100% PL or PB.

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Properties of Substrates With Ground Pine Bark

Cited by 12 publications

References 0 publications

Organic Growing Media: Constituents and Properties

Organic Growing Media: Constituents and Properties

Effects of Coir-Based Growing Medium with Municipal Solid Waste Compost or Biochar on Plant Growth, Mineral Nutrition, and Accumulation of Phytochemicals in Spinach

Methods of Constructing a Pine Tree Substrate from Various Wood Particle Sizes, Organic Amendments, and Sand for Desired Physical Properties and Plant Growth

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