scholarly journals Biomass production and essential oil of lemon balm cultivated under colored screens and nitrogen

2018 ◽  
Vol 36 (1) ◽  
pp. 94-99
Author(s):  
Aglair C Alves ◽  
Fábio N Jesus ◽  
Péricles B Alves ◽  
Hamilton V Santos ◽  
Girlene S Souza ◽  
...  
Keyword(s):  
Essential Oil ◽  
Biomass Production ◽  
Nitrogen Availability ◽  
Light Quality ◽  
Production Yield ◽  
Leaf Biomass ◽  
Lemon Balm ◽  
Lippia Alba ◽  
Effect Of Light

ABSTRACT The aim of this study was to evaluate the effect of light quality and nitrogen availability on the biomass production, yield and composition of essential oil of lemon balm (Lippia alba). Five doses of N (0; 40; 80; 120 and 160 kg ha-1) were studied, using urea and three light quality conditions obtained with the use of colored shading nets (blue and red), 50% irradiance and under full sun. The experiment was arranged in a 5x3 factorial scheme, in split plots, with seven replicates. After 60 days of cultivation under the shading nets, a higher dry leaf biomass (4.83 g per plant) was observed in the plants under blue net cultivation at a dose of 102 kg ha-1 of N. The plants grown under full sun presented greater amount of neral and geranial, major components of the essential oil of the lemon balm, which give commercial value to the species. The use of colored shading nets does not influence the composition of the essential oil of lemon balm, but increases the concentration of the compounds found in it. Nitrogen does not affect the quality of the essential oil of lemon balm, but it provides higher oil yield (0.27 g per plant) at the dose of 65 kg ha-1 of N.

scholarly journals Content and composition of essential oil in lemon balm (Lippia alba (Mill) N.E.Br.) grown with ammonium and nitrate in light environments

2019 ◽  
Vol 13 (1) ◽  
Author(s):  
Janderson Do Carmo Lima ◽  
Anacleto Ranulfo Dos Santos ◽  
Aline Dos Anjos Soua ◽  
Marcelo Batista Dos Santos ◽  
Pericles Barreto Alves
Keyword(s):  
Medicinal Plants ◽  
Essential Oil ◽  
Experiment Design ◽  
Lemon Balm ◽  
Lippia Alba

Medicinal plants have great potential for the production of phytocompounds, which are used for various purposes, mainly in drugs and cosmetics. The aim of this study was to evaluate the essential oil from Lippia alba cultivated with ammonium (NH4+) and nitrate (NO3-) under light environments. The plants were subjected to five ratios of NH4+: NO3- with nutritious solutions and four light environments (red, aluminet and black mesh, and full sun). The experiment design was entirely randomized with a 5 × 4 interaction and five repetitions per treatment, totaling 100 experiment units. The seedlings were transplanted to 6 dm3 plastic pots containing a mixture of washed sand + vermiculite at a ratio of 2:1. At 120 days after application of the treatments, the following parameters were evaluated: yield, content and composition of essential oil. The extraction was performed with the hydrodistillation method using drag of steam for a period of 2 hours. Nine compounds were found in the essential oil,  of which  neral and geranial represented 90% of the blend. Carvone was only found in the treatment with plants grown under the red mesh and with the 50:50 ratio of ammonium and nitrate.

scholarly journals LETTUCE AND LEMON BALM INTERCROPPING: CROPS PRODUCTIVITY, YIELD AND PHYTOCHEMICAL QUALITY OF LEMON BALM’S ESSENTIAL OIL / CONSÓRCIO ENTRE ALFACE E MELISSA: PRODUTIVIDADE DAS CULTURAS, TEOR E QUALIDADE FITOQUÍMICA DO ÓLEO ESSENCIAL DE MELISSA

2020 ◽  
Vol 6 (12) ◽  
pp. 98186-98196
Author(s):  
Maira Christina Marques Fonseca ◽  
Maria Aparecida N. Sediyama ◽  
Ana Ermelinda Marques ◽  
Fred Denilson Barbosa da Silva ◽  
Ronicely Pereira da Rocha ◽  
...  
Keyword(s):  
Essential Oil ◽  
Lemon Balm

Effect of Light Quality on the Biomass Yield, Photosystem 2 Fluorescence, and the Total Essential Oil Content of Ocimum basilicum

2020 ◽  
Vol 56 (3) ◽  
pp. 336-343
Author(s):  
V. S. Zotov ◽  
Yu. V. Bolychevtseva ◽  
S. A. Khapchaeva ◽  
I. V. Terekhova ◽  
V. V. Shubin ◽  
...  
Keyword(s):  
Essential Oil ◽  
Photosystem 2 ◽  
Oil Content ◽  
Light Quality ◽  
Biomass Yield ◽  
Ocimum Basilicum ◽  
Effect Of Light

scholarly journals Impact of phosphorus and luminosity on the propagation, photochemical reactions and quality of Lippia alba (Mill.) N.E.Br. seedlings

2019 ◽  
Vol 13 (2) ◽  
pp. 291-302
Author(s):  
Cleberton Correia Santos ◽  
Alejandro Franco-Rodrigues ◽  
Gonzalo Manuel Araujo ◽  
Silvana De Paula Quintão Scalon ◽  
Maria Do Carmo Vieira
Keyword(s):  
Leaf Area ◽  
Light Stress ◽  
Principal Component ◽  
Photochemical Reactions ◽  
Leaf Biomass ◽  
Lippia Alba ◽  
Phosphate Fertilization ◽  
Components Analysis ◽  
Four Levels

Lippia alba (Mill.) N.E.Br. (lemongrass) is a spice and medicinal plant species, with fledgling studies related to mineral nutrition and luminosity on foliar and vegetative responses. Thus, the aim of this study was to assess the foliar aspects and production of L. alba under two light conditions (full sun and 50% shading ) and four levels of phosphorus-P (0, 150, 300 and 450 mg kg-1). The L. alba seedlings presented changes in physiological indices and photochemical responses based on chlorophyll-a fluorescence. The phosphate fertilization helped mitigate the light stress for the synthesis of chlorophylls. The greatest leaf biomass production occurred with addition of P. The principal components analysis explained 74% of the variability, with leaf number, initial fluorescence and specific leaf area in principal component 1 (PC 1) and bud number, survival and leaf area in PC 2. Two groups formed in the cluster analysis, with lower distances between P300 full sun and P450 shading (2.31). The seedlings cultivated under full sun presented a higher survivability and seedling quality. The production of L. alba seedlings should be done under full sun with the addition of 450 mg kg-1 of phosphorus.

scholarly journals Effect of light quality on leaf photosynthetic characteristics and fruit quality of peach (Prunus persica L. Batch)

2018 ◽  
Vol 56 (4) ◽  
pp. 1113-1122 ◽  
Author(s):  
B.-B. Zhang ◽  
J.-L. Xu ◽  
M. Zhou ◽  
D.-H. Yan ◽  
R.-J. Ma
Keyword(s):  
Fruit Quality ◽  
Light Quality ◽  
Prunus Persica ◽  
Photosynthetic Characteristics ◽  
Effect Of Light
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