Predicting the chemical composition of fibre and core fraction of hemp (Cannabis sativa L.)

Toonen, M.A.J.; Maliepaard, Chris; Reijmers, Theo H.; Voet, Hilko van der; Mastebroek, H.D.; Broeck, H.C. van den; Ebskamp, M.J.M.; Kessler, Waltraud; Kessler, Rudolf W.

doi:10.1007/s10681-004-4753-z

Cited by 28 publications

(18 citation statements)

References 14 publications

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“…The studies on hemp resumed strongly in the 1980s with the selection of low-THC genotypes (Rivoira et al 1984) and, above all, with three large projects funded by the European Union aimed at bringing hemp back to fashion, while creating awareness of its potentialities for challenging textile and non-textile markets (Amaducci 2003;Amaducci and Venturi 1998;Karus and Vogt 2004;Struik et al 2000;Toonen et al 2004). The optimal plant density and fertilization doses were tailored for the newly developed low-THC genotypes, as well as innovative and economic processes were designed and tested (Amaducci 2003;Amaducci, Műssig, et al 2008; Figure 2).…”

Section: The Evolution Of Hemp Studies In North Italymentioning

confidence: 99%

Eighty Years of Studies on Industrial Hemp in the Po Valley (1930--2010)

Zatta¹,

Monti²,

Venturi³

2012

Journal of Natural Fibers

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Section: The Evolution Of Hemp Studies In North Italymentioning

confidence: 99%

Eighty Years of Studies on Industrial Hemp in the Po Valley (1930--2010)

Zatta¹,

Monti²,

Venturi³

2012

Journal of Natural Fibers

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“…Possible new techniques to treat, wash and sort these materials are hoped to result in the development of peat diluents. New techniques are also attempting to upgrade some fibrous rest materials into fiber materials with the right qualities for potting soil mixes (Beerepoot, 2003;Toonen and Maliepaard, 2004).…”

Section: Social Responsibilitymentioning

confidence: 99%

Trends in Rooting Media in Dutch Horticulture During the Period 2001-2005: The New Growing Media Project

Blok¹,

Verhagen²

2009

Acta Hortic.

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An overview of the developments in the area and volume of substrates used for horticultural rooting media in Holland in the period 2001 to 2005 is given. The overview is followed by a discussion of some trends in society and technology including the interest of public and society in a possible substitution of peat, an increase in the use of locally produced renewable carbon based substrates and an increase in nutrient recirculation for soil grown crops. In reaction to growing public concern about peat harvesting for horticultural purposes in parts of Europe, Dutch growers, researchers, potting soil producers, an auction and traders initiated in 2003 a research program named the New Growing Media Project. The aim was:• To assess the technical and economical potential of peat alternatives.• showed that for Hedera and Schefflera, the ultimate alternative mix was superior to the commercial standard used. For five species, Anthurium, Chrysanthemum, Gerbera, Spathiphyllum and Castanospermum, the alternative mix proved equal to the commercial standard. For eight species, Azalea, Guzmania, Poinsettia, Rosa, Saintpaulia, Adiantum, Crassula and Ficus, results were poorer than on the standard medium. The growers however, felt confident the alternative mixes could do better if the growing system, often the irrigation frequency, could be adapted to the experimental growing medium. Begonia gave poorer results with the new mix. The percentage peat used in the mixes was reduced from 77% on average in the commercial standard mixes to 30% on average in the new mixes. The most popular alternatives were coir products which increased from 17 to 40%. Other alternatives used were various barks, rice hulls, perlite, wood fiber, composts, and rockwool granulate. Those alternatives were used in mixtures from 5 to 30%. General conclusions include a growing interest in locally produced composts, granulates and fibers and for materials with properties such as a high initial air content combined with an improved rewetting rate. INTRODUCTIONThe aim of this article is to illustrate, quantify and discuss developments in the area and volume of substrates used for horticultural rooting media at present. For practical reasons the overview is restricted to rooting media in Holland in the period 2001 to 2005. Data from diverse sources such as the government, the industry and RHP were combined (Anon

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“…[32,45] as well as mineral compositions [38,33,16]. However, most studies concentrate on pure sample sets of wheat [25], maize silage [11,23], herbages, grass silages [30,2], legumes [19,9], rice [48] sunflower [26] or hemp [44]. Reliability of NIRS had been questioned when analysis was performed across different plant species and cultivars [14,39].…”

Section: Focus Of This Studymentioning

confidence: 99%

Assessment of Mass Flows and Fuel Quality During Mechanical Dehydration of Silages Using Near Infrared Reflectance Spectroscopy

et al. 2009

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This study was implemented to evaluate the potential of near-infrared reflectance spectroscopy (NIRS) technology to estimate chemical composition of dried press cake samples characterised by a wide range of parent materials. A total of 210 samples, derived from two studies on production of solid fuels from agricultural crops by application of the IFBB technology (Integrated production of solid fuels and biogas from biomass), were analysed to determine their chemical composition. A Foss XDSspectrometer was used to obtain near-infrared spectra (400-2,500 nm). Prediction equations, developed for chemical components, showed that NIRS technology could predict N, inorganic ash (ash), crude fiber (CF), ether extract (EE) and nitrogen free extracts (NFE) accurately (RSQ cal and SECV of 0.93 and 0.04 % DM, 0.89 and 0.48 % DM, 0.93 and 1.67 % DM, 0.87 and 0.28 % DM and 0.93 and 1.72 % DM, respectively). Mineral components could also be predicted with a moderate degree of accuracy using NIRS technology (RSQ cal and SECV of 0.85 and 0.10 % DM (K), 0.77 and 0.01 % DM (P) and 0.84 and 0.02 % DM (Cl), respectively), whereas calibration of gross energy (GE) did not succeed. Subsequent, external validation confirmed these results. Regression of mass flows with measured and NIRS-predicted values showed accurate results (RSQ 0.72-0.99) and promise an accelerated quality management in working biogas plants.

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Predicting the chemical composition of fibre and core fraction of hemp (Cannabis sativa L.)

Cited by 28 publications

References 14 publications

Eighty Years of Studies on Industrial Hemp in the Po Valley (1930--2010)

Eighty Years of Studies on Industrial Hemp in the Po Valley (1930--2010)

Trends in Rooting Media in Dutch Horticulture During the Period 2001-2005: The New Growing Media Project

Assessment of Mass Flows and Fuel Quality During Mechanical Dehydration of Silages Using Near Infrared Reflectance Spectroscopy

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