Abstract:Damask rose (Rosa damascena Mill.) is one of the most high-value essential oil-bearing plants in the world. However, the flower yield and quality of essential oil of R. damascena are largely influenced by the pruning practices and balanced supply of plant nutrition. The objective of this study was to test the hypothesis whether the pruning system and foliar fertilization of MgSO4 would influence the flower yield, growth and secondary metabolites profile of R. damascena. A field experiment of 10 treatment combi… Show more
“…Numbers of flowers plant -1 and fresh flower weight plant -1 produced significantly (p ≤ 0.01) higher positive correlation with flower yield (0.99), essential oil content (0.77), while, showed positive correlation with numbers of branches plant -1 (0.44). Similar results were observed in correlation matrix of damask rose in which data revealed that flower yield was significantly and positively correlated with the number of flower [34]. Plant height (cm) had highly positive significant correlation for LAI (0.89), N-S plant spread (0.88) and E-W plant spread (0.82), however, had positive correlation for number of branches plant -1 .…”
A field experiment was conducted at the experimental farm of CSIR-Institute of Himalayan Bioresource Technology, Palampur, India for two consecutive years (2015–16 and 2016–17). The aim of the study was to test the hypothesis whether different shade level and mulch type would influence the growth, flower yield and essential oil profile of
R
.
damascena
. Yield attributes
viz
., numbers of flowers plant
-1
, fresh flower weight plant
-1
, flower yield, and essential oil yield were significantly higher under open sunny conditions as compared to 25% and 50% shade levels. However, plants grown under 50% shade level recorded significantly higher plant height (cm), plant spread (cm) and the lowest numbers of branches as compared to control. Among mulches, black polyethylene mulch recorded significantly higher growth, and yield attributes of damask rose as compared to other mulches. Black polyethylene mulch recorded 74.5 and 39.2% higher fresh flower yield as compared to without mulch, during 2015–16 and 2016–17, respectively. Correlation studies showed a positively significant correlation between quality and quantity traits. A total of twenty-six essential oil compounds were identified which accounted for a total of 88.8 to 95.3%. Plants grown under open sunny conditions along with the applications of black polyethylene mulch produced a higher concentration of citronellol and
trans
-geraniol. Damask rose planted in open sunny conditions and mulched with black polyethylene sheet recorded significantly higher flower yield.
“…Numbers of flowers plant -1 and fresh flower weight plant -1 produced significantly (p ≤ 0.01) higher positive correlation with flower yield (0.99), essential oil content (0.77), while, showed positive correlation with numbers of branches plant -1 (0.44). Similar results were observed in correlation matrix of damask rose in which data revealed that flower yield was significantly and positively correlated with the number of flower [34]. Plant height (cm) had highly positive significant correlation for LAI (0.89), N-S plant spread (0.88) and E-W plant spread (0.82), however, had positive correlation for number of branches plant -1 .…”
A field experiment was conducted at the experimental farm of CSIR-Institute of Himalayan Bioresource Technology, Palampur, India for two consecutive years (2015–16 and 2016–17). The aim of the study was to test the hypothesis whether different shade level and mulch type would influence the growth, flower yield and essential oil profile of
R
.
damascena
. Yield attributes
viz
., numbers of flowers plant
-1
, fresh flower weight plant
-1
, flower yield, and essential oil yield were significantly higher under open sunny conditions as compared to 25% and 50% shade levels. However, plants grown under 50% shade level recorded significantly higher plant height (cm), plant spread (cm) and the lowest numbers of branches as compared to control. Among mulches, black polyethylene mulch recorded significantly higher growth, and yield attributes of damask rose as compared to other mulches. Black polyethylene mulch recorded 74.5 and 39.2% higher fresh flower yield as compared to without mulch, during 2015–16 and 2016–17, respectively. Correlation studies showed a positively significant correlation between quality and quantity traits. A total of twenty-six essential oil compounds were identified which accounted for a total of 88.8 to 95.3%. Plants grown under open sunny conditions along with the applications of black polyethylene mulch produced a higher concentration of citronellol and
trans
-geraniol. Damask rose planted in open sunny conditions and mulched with black polyethylene sheet recorded significantly higher flower yield.
“…Akhtar et al (2016) proved that pruning is effective for increasing flowers yield. Our results are in harmony with the report of Pal & Mahajan (2017) who reported that the proper pruning system could increase the flowers yield by improving the levels of both photosynthetic pigment and N content. Phosphorous has a pivotal role in genetic inheritance, membrane structure, signaling pathways, and metabolism, and therefore it is considered essential for all plants (Ashley et al, 2011;Butusov & Jernelöv, 2013) which may explain the enhanced flower yield due to its application.…”
Section: Discussionsupporting
confidence: 92%
“…species, Rosa damascena Miller var. trigintipetala Dieck or Taif-rose is extensively cultivated for valuable volatile oil and its products such as rose concrete, absolute and rose water and the perfumes (Rusanov et al, 2005;Pal & Mahajan, 2017;Al-Yasi et al, 2020;Hassan et al, 2021). Further, the rose volatile oil is widely used in pharmaceutical, food and flavour & fragrance industries (Baydar & Baydar, 2013).…”
mentioning
confidence: 99%
“…Additionally, Hassanein (2010) revealed that petals' weight and oil content raised by light and medium pruning relative to heavy pruning. Moreover, Pal & Mahajan (2017) revealed that flower production of damask rose and oil quality are highly influenced by pruning practices and plant nutrition. Hence, the inappropriate pruning system of damask rose can severely affect the productivity and quality of flowers (Admasu & Struikb, 2000).…”
Mill), is one of the substantial industrial crops cultivated for the high-value of its essential oil around the world (Hassan et al., 2018;Attia et al., 2020). Among rose G ETTING the highest flower yield with high-quality volatile oil of Rosa damascena Miller var. trigintipetala Dieck through good agricultural practices is one of the main challenges for oil production. Despite the critical role of pruning and P-fertilizer which strongly improve the flower productivity, their impacts on growth, flower yield, volatile oil and some physiological and biochemical processes are still poorly investigated on damask rose. Thus, in this experiment, two pruning levels i.e. 80 and 100cm from ground level and three rates of P-fertilizer (0, 15 and 30kg P 2 O 5 ha -1 , respectively) were examined. The tallest plants were observed in response to the combined treatment of pruning level at 100 cm and P-fertilizer at 30kg ha -1 . However application of the same P-fertlizer level with pruning at 80 cm resulted in the highest new shoots number/ hill, flower yield components, oil content, relative water content, chlorophyll content, stomatal conductance, total soluble sugars, and N, P and K percentages relative to the other treatments. The flower yield was increased by 23.52% when plants pruned at 80cm and fertilized with P at 30kg ha -1 compared to the pruning at 100cm withought P addition. Decreasing pruning level and increasing P-fertilizer enhanced the protein content while reduced the free amino acids content. Conclusevelly, to obtain higher flower yield and volatile oil productivity, pruning damask rose plants at 80cm and P-fetilizet at 30kg ha -1 is recommended.
“…No statistical significance was noted at the harvesting stage except at E.V.S, L.V.S, and B.S (p < 0.05), as shown in Figure 2 B . It is expected that cutting would encourage branching, and additionally, the well-established plants in the second cut would have a robust root system that supports vegetative growth ( Chimonidou-Pavlidou, 2000 ; Pal and Mahajan, 2017 ). Figure 2 The effect of Irrigation treatments on; A & B: Number of branches in cut 1&2; C & D: plant heights in cut 1&2 at different growth stages.…”
The concept of Integrating Aquaculture with Agriculture (IAA) is considered the right path towards achieving sustainable agriculture in semi and arid areas. With the increase of global water scarcity, the double utilization of water for both fish and crop production is gaining more attention since it ensures maximizing the productivity of every unit of water used. This study investigated the effect of fish effluent irrigation on the herbage growth, essential oil content, and composition of Origanum syriacum L. The experiment followed a randomized complete design of three irrigation treatments with three replicates, i.e., control with 100% chemical fertilizers (CT), full irrigation with fish effluent (FT), and the mixed treatment (MT) with 50% CT and 50% FT. Study findings showed that FT reached 49 branches/plant, gained maximum plant height (58.8cm), and highest fresh and dry herbage yield reaching 17.76 and 6.722 tons ha-1, respectively, in the second cut. Essential oil content reached the maximum in FT at 64.02dm 3 ha-1 and 143.5dm 3 ha-1, while the lowest in CT at 15.95dm 3 ha-1 and 109.33dm 3 ha-1 for the first cut and second, respectively. Carvacrol was the main constituent of the excreted essential oil, representing a maximum of 80.87% for FT in the first cut and 74.69% for MT in the second cut. It was closely followed by p-Cymene (10.75%-CT, 6.38%-FT) and γ-Terpinene (5.06%-CT, 8.49%-FT) for the first and second cut respectively. The importance of these major chemical components stems from their use in both the food and pharmaceutical industries.
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