Produção de biomassa e óleo essencial em mil folhas cultivada sob telas coloridas

Pinto, José Eduardo Bp; Ferraz, Elza Oliveira; Bertolucci, S.K.V.; Silveira, Helbert Ro; Santos, A. R.; Silva, Giselly M

doi:10.1590/s0102-05362014000300014

Cited by 6 publications

(5 citation statements)

References 13 publications

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“…The essential oil yield varies from species to species and depends on several factors and conditions of cultivation; usually, a higher oil yield is the result of a greater accumulation of phytomass (Pinto et al, 2014). According to Rao (2001), most aromatic plants are sensitive to N deficiencies, and the application of N increases the production of essential oil.…”

Section: Resultsmentioning

confidence: 99%

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

Lima

Santos

Soua

et al. 2019

Rev. Colomb. Cienc. Hortic.

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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.

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Section: Resultsmentioning

confidence: 99%

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

Lima

Santos

Soua

et al. 2019

Rev. Colomb. Cienc. Hortic.

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“…Além do uso dos húmus de minhoca, o cultivo sob malhas coloridas pode melhorar a produção de olerícolas folhosas, pois tende a reduzir a intensidade da energia radiante com melhor ajuste na sua distribuição modificando tanto a quantidade como a qualidade da radiação solar transmitida a depender da particularidade de cada espécie (PINTO et al, 2014) por meio de uma barreira física de proteção que tem capacidade de filtrar a radiação solar, promovendo respostas fisiológicas necessárias, reguladas pela luz (BRANT et al, 2009;HENRIQUE et al, 2011).…”

Section: Introductionunclassified

Características agronômicas de ora-pro-nóbis cultivadas em ambientes de luz e adubação orgânica

Jesus

Anjos

Ferreira

et al. 2020

BJD

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In view of the above, the objective was to evaluate the impact of different combinations of quality and light intensity with the use of colored meshes in the absence and presence of organic fertilization in the growth and content of photosynthetic pigments of plants of ora-pronóbis. The study was carried out in a greenhouse located at the Federal University of Recôncavo da Bahia, in the municipality of Cruz das Almas-BA. The design was completely randomized in a 2 x 3 factorial scheme, arranged in subdivided plots. The combined action of the red mesh and addition of humus to the soil increased the chlorophyll and total content of the ora-pro-nóbis plants, whereas for the carotenoid content the best results were obtained in the plants grown in full sun with the presence of earthworm humus in soil.The environment in full sun provided the highest root length and the addition of humus to the soil provided an increase in the number of leaves and shoots, in the leaf area, leaf area ratio, leaf mass ratio and leaf dry matter mass, an important result, because the leaves represent the commercial product of ora-pro-nóbis. The cultivation in full sun and fertilization with earthworm humus is the most suitable for the initial growth of the ora-pro-nobis plants.

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“…For instance, red net provides the benefits by the greater availability of the red radiation (above 590 nm) (Henrique et al, 2011). Red shade nets decrease blue, green, and yellow waves and add waves in the red and far-red spectral range (Pinto and Bertolucci, 2014;Stagnari et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Fotoselektif Netlerin Çilek Bitkilerine Fizyolojik Etkileri

Aras

Eşítken

2019

Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi

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The sunlight manipulation can be utilized to promote the desired plant physiology by using photoselective nets. In our study, we tested different colored nets to determine the physiological responses of the strawberry plant. The study was conducted in 2016 at Selcuk University in Turkey. A strawberry (Fragaria × ananassa Duch.) cv Kabarla was used in the study planted in 7 L pots. Before the shading treatment, all plants were grown outdoors. For the shading experiment, sunlight was declined by red, green and black nets allowing 40% shade with covering from July until September of 2016 (during 2 months). At the end of the experiment, some physiological and microclimate properties were evaluated. The green net showed the highest SPAD value (39.79), while the lowest value was obtained in red net (34.99). The photoselective nets increased anthocyanin compared to control. Stomatal conductance in the red colored net decreased by approximately 38% when compared to full sunlight. The lowest soil temperature was observed under green colored net. Colored nets increased air temperature compared to control. As a result, the mitigative effect of the photoselective nets against radiation could be used to decrease the malignant effects of environmental stresses such as drought, excessive solar radiation, salinity.

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Produção de biomassa e óleo essencial em mil folhas cultivada sob telas coloridas

Cited by 6 publications

References 13 publications

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

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

Características agronômicas de ora-pro-nóbis cultivadas em ambientes de luz e adubação orgânica

Fotoselektif Netlerin Çilek Bitkilerine Fizyolojik Etkileri

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