Phytotoxic Effect of Fiber Hemp Essential Oil on Germination of Some Weeds and Crops

Synowiec, Agnieszka; Rys, Magdalena; Bocianowski, Jan; Wielgusz, Katarzyna; Byczyńska, Małgorzata; Heller, Krzysztof; Kalemba, Danuta

doi:10.1080/0972060x.2015.1137236

Cited by 23 publications

(15 citation statements)

References 25 publications

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“…They are therefore used to treat wounds and infections such as food poisoning and nosocomial infections, and can be used against antibiotic-resistant bacterial strains [17]. In addition, they are commonly used as insecticides [18,19], fungicides [20], and growth inhibitors for unwanted plants [21], and can be used in plant protection as a means of stopping plant diseases and pest attacks [19]. Cannabinoids contained in hemp also play a special role.…”

Section: Introductionmentioning

confidence: 99%

Volatile Composition and Sensory Properties as Quality Attributes of Fresh and Dried Hemp Flowers (Cannabis sativa L.)

Kwaśnica

Pachura

Masztalerz

et al. 2020

Foods

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Flowers of hemp (Cannabis sativa L.) are widely used in cosmetics, food, and in the pharmaceutical industry. The drying process plays a key role in retention of aroma and also in the quality of products. Seven variants of hemp flower drying, including convection drying (CD), vacuum–microwave drying (VMD), and combined drying consisting of convective pre-drying followed by vacuum–microwave finishing drying (CPD-VMFD) were checked in this study. For each process, we applied the two-term model. Dried material was submitted to color and chromatographical assessments. Analyses of obtained essential oil showed the presence of 93 volatile compounds, predominantly β-myrcene, limonene, and β-(E)-caryophyllene, as well as α-humulene. Application of 240 W during VMD and 50 °C during CD gave the highest retention of aroma compounds, amounting to 85 and 76%, respectively, but with huge color changes. Additionally, sensory analysis proved that drying with a microwave power of 240 W provides a product most similar to fresh material.

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Section: Introductionmentioning

confidence: 99%

Volatile Composition and Sensory Properties as Quality Attributes of Fresh and Dried Hemp Flowers (Cannabis sativa L.)

Kwaśnica

Pachura

Masztalerz

et al. 2020

Foods

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“…Thanks to their antimicrobial properties [12][13][14] they are used in topical treatments of wounds and skin infections, against pathogens involved in nosocomial infections, in food spoilage and poisoning, intestinal syndromes and against bacterial strains resistant to antibiotics [13]. Hemp essential oil has also proven to be effective as an insecticide [15][16][17], nematicide [18], fungicide [19], allelopathic [20][21][22] and anti leishmaniasis [23], justifying its use in crop protection [15] as an alternative to petrochemical-derived products. The quantitative and qualitative composition of C. sativa essential oil varies substantially in relation to variety, pedo-climate conditions, harvest time and extraction method [24,25] and for this reason, their terpene profile is often unpredictable and not easily standardized [5,26].…”

Section: Introductionmentioning

confidence: 99%

Yield and Quality of Essential Oils in Hemp Varieties in Different Environments

et al. 2019

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Due to its possible utilization in cosmetics, medicine and crop protection, as a valuable alternative to petrochemical-derived products, hemp essential oil is now considered a product with high value added and a promising marketing potential. This experiment was conducted with the aim of evaluating the effect of four different locations of Northern Italy during two years (four environments) and three hemp monoecious varieties on the production and quality of essential oils (EOs) obtained by inflorescences harvested at full flowering of female flowers. The highest inflorescence yield was obtained at Maiano 2017, where a superficial groundwater layer (1.5 m) was present, with values that ranged from 1.69 of Fedora to 2.06 t ha−1 of Futura. EOs production ranged between 3.4 and 4.9 L ha−1, affected mainly by the variety effect. The terpene in EOs, very similar between varieties and environments, was mainly composed of sesquiterpenes (caryophillene and humulene, as the most abundant) rather than monoterpenes (α-pinene, β-myrcene and trans-β-ocimene, in particular). Phytocannabinoids, and in particular cannabidiol (CBD), were not removed from tissues by the steam during hydrodistillation, and if this is confirmed by further experiments, the residual biomass, now considered as waste, could assume significant importance as a source for further utilization.

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“…A weed risk assessment was conducted on C. sativa for Victoria and it identified that this plant could pose a moderate threat to Victoria's biodiversity, particularly due to its aggressive growth, early sexual maturity, high seeds production, and human aided dispersal (Agriculture Victoria, 2017). Cannibis sativa produces a germination inhibiting essential oil, which has proven to be an effective botanical herbicide against common agricultural weeds including reedroot, pigweed and rye broome (Agnieska et al, 2016). This essential oil has minimal effect on crop seedlings such as rapeseed and oat which demonstrated high resistance to the oil (Agnieska et al, 2016).…”

Section: Weed and Pest Managementmentioning

confidence: 99%

“…Cannibis sativa produces a germination inhibiting essential oil, which has proven to be an effective botanical herbicide against common agricultural weeds including reedroot, pigweed and rye broome (Agnieska et al, 2016). This essential oil has minimal effect on crop seedlings such as rapeseed and oat which demonstrated high resistance to the oil (Agnieska et al, 2016). The essential oil was identified to be more effective on dicot weeds than monocot's, suggesting some grass weeds may remain problematic in these systems if careful weed management practices are not implemented (Agnieska et al, 2016).…”

Section: Weed and Pest Managementmentioning

confidence: 99%

“…This essential oil has minimal effect on crop seedlings such as rapeseed and oat which demonstrated high resistance to the oil (Agnieska et al, 2016). The essential oil was identified to be more effective on dicot weeds than monocot's, suggesting some grass weeds may remain problematic in these systems if careful weed management practices are not implemented (Agnieska et al, 2016). Furthermore, as a result of C. sativa having earlier germination than other summer annuals, rapid growth rate and high density, light dependent weeds are generally outcompeted Campiglia et al, 2017), and within two to four weeks, C. sativa will have a groundcover of up to 90%, repressing the establishment of competing weed species (Zatta et al, 2012;CHTA, 2017a).…”

Section: Weed and Pest Managementmentioning

confidence: 99%

See 1 more Smart Citation

Cultivation of low tetrahydrocannabinol (THC) Cannabis sativa L. cultivation in Victoria, Australia: Do we know enough?

Humphries

Florentine

2019

Aust J Crop Sci

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Late 2017, the ban on the cultivation and consumption of low tetrahydrocannabinol (THC) Cannabis sativa L. in Victoria, was lifted by the Federal Government of Australia. Its legalization presents the opportunity for Victoria to become a leading producer and distributer of these economically valuable hemp products. However, as a novel crop to Victoria, there is little information available for obtaining economically viable yields. Therefore, the objectives of this review were to firstly, develop an understanding of the environmental requirements shared by C. sativa cultivars, and what conditions promote fibre and grain yields. Secondly, it seeks to identify what farming practices have been conducted throughout Europe, Canada and China, and to explore whether these practices could be adapted to Victoria. Thirdly, the review will assist in making recommendations regarding which cultivars would be 'potential' candidates for commencing trials under Victorian climates so to find out the varieties that can provide high yields for fibre, grain and dual-purpose production. This review notes that Victoria shares a similar climate to central Europe, and has an ideal climate for the development of a successful hemp industry, as it has suitable lengths of daylight throughout spring and summer months and meets the precipitation requirements. This review has thus strongly suggested that the properties and attributes of European varieties of C. sativa should be further researched for site-specific cultivation in Victoria for fibre, grain and dual-purpose production in order to maximise harvest yields.

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Phytotoxic Effect of Fiber Hemp Essential Oil on Germination of Some Weeds and Crops

Cited by 23 publications

References 25 publications

Volatile Composition and Sensory Properties as Quality Attributes of Fresh and Dried Hemp Flowers (Cannabis sativa L.)

Volatile Composition and Sensory Properties as Quality Attributes of Fresh and Dried Hemp Flowers (Cannabis sativa L.)

Yield and Quality of Essential Oils in Hemp Varieties in Different Environments

Cultivation of low tetrahydrocannabinol (THC) Cannabis sativa L. cultivation in Victoria, Australia: Do we know enough?

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