STUDI PERBANDINGAN PENGARUH BERBAGAI WARNA LAMPU DAN BUNYI TERHADAP PERTUMBUHAN SAYURAN SAWI HIJAU (BRASSICA RAPA VAR. PARACHINENSIS L)

Research has been conducted which aims to determine the effect of various colors of LED light and sound effects with frequency of 280Hz-16KHz. This research was conducted by seeding mustard greens for 2 weeks then moving mustard greens to polybags by giving two treatments. First treatment of mustard greens illuminated by LED lights with the color red, yellow, green and the fourth polybag left without the addition of LED light. The second treatment is every 1 polybag of green mustard illuminated by LED lights with red, yellow, green lights at night for 4 hours then exposed to sound in the morning for 4 hours and the fourth polybag is exposed to sound without the addition of lights. The results of this study indicate the effect of the addition of red LED light color on the plant is clearly seen in the width of green mustard leaves that have wider leaves between the addition of other LED light colors and the number of leaves produced more than the addition of yellow, green and without additional light. The effect of exposure to sound on the plant has a fairly good influence on the height of the stem, stem width and number of leaves compared to plants that are not given sound exposure and in plants that are given additional LED light then the sound produces better plant growth compared to plants that only given additional lights or just given a sound.

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COMPUTER SIMULATION OF PPF DISTRIBUTION UNDER BLUE AND RED LED LIGHT SOURCE FOR PLANT GROWTH

Acta Horticulturae ◽

10.17660/actahortic.1996.440.50 ◽

1996 ◽

pp. 286-291 ◽

Cited By ~ 4

Author(s):

S. Takita ◽

K. Okamoto ◽

T. Yanagi

Keyword(s):

Computer Simulation ◽

Plant Growth ◽

Light Source ◽

Led Light ◽

Red Led

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Potential Use of Colored LED Lights to Increase the Production of Bioactive Metabolites Hedyotis corymbosa (L.) Lam

Plants ◽

10.3390/plants11020225 ◽

2022 ◽

Vol 11 (2) ◽

pp. 225

Author(s):

Anh Tuan Le ◽

Ju-Kyung Yu ◽

Gyung-Deok Han ◽

Thuong Kiet Do ◽

Yong-Suk Chung

Keyword(s):

Plant Growth ◽

Crop Production ◽

Genetically Modified Organisms ◽

Light Emitting Diode ◽

Photosynthetic Characteristics ◽

Bioactive Metabolites ◽

Total Phenolic ◽

Blue Led ◽

Red Led ◽

Led Lights

Hedyotis corymbosa (L.) Lam is a wild herb that is used in traditional Indian, Chinese, and African medicine. Light-emitting diode (LED) technology is paving the way to enhance crop production and inducing targeted photomorphogenic, biochemical, or physiological responses in plants. This study examines the efficiency of H. corymbosa (L.) Lam production under blue 450 nm and red 660 nm LED lights for overall plant growth, photosynthetic characteristics, and the contents of metabolite compounds. Our research showed that blue LED lights provided a positive effect on enhancing plant growth and overall biomass. In addition, blue LED lights are more effective in controlling the production of sucrose, starch, total phenolic compounds, and total flavonoid compared to red LED lights. However, blue and red LED lights played essential but different roles in photosynthetic characteristics. Our results showed the potential of colored LED light applications in improving farming methods and increasing metabolite production in herbs. LED lights are safer alternatives than genetically modified organisms or genome editing.

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Keberadaan Oksigen Pada Media Tanam Hidroponik terhadap Pertumbuhan Tanaman Sayuran (Presence of Oxygen At Hydroponic Growing Media on the Growth of Vegetables)

Jurnal BiBieT ◽

10.22216/jbbt.v1i1.1249 ◽

2016 ◽

Vol 1 (1) ◽

pp. 27

Author(s):

Surtinah Surtinah

Keyword(s):

Data Analysis ◽

Plant Growth ◽

Plant Height ◽

Root Length ◽

Not Given ◽

Growing Media ◽

Key Word ◽

The Media ◽

Number Of Leaves ◽

Growth Indicator

ABSTRAK Tujuan penelitian adalah untuk mengetahui manfaat oksigen pada media tanam hidroponik terhadap pertumbuhan tanaman indikator. Rancangan perlakuan yang digunakan adalah pemberian oksigen pada media tanam hidroponik terhadap pertumbuhan tanaman pakcoy. Perlakuan tersebut adalah : A : media hidroponik diberi oksigen dengan menggunakan aerator. B : media tanam hidroponik tidak diberi oksigen. Analisis data menggunakan Uji – t berpasangan, dan parameter yang diamati adalah tinggi tanaman, jumlah daun, dan panjang akar. Hasil penelitian menunjukan tinggi tanaman dan panjang akar tanaman pakcoy berbeda nyata antara media yang tidak diberi oksigen dan media yang diberi oksigen, sedangkan jumlah daun pakcoy berbeda tidak nyata. ABSTARCT study is to determine the benefits of oxygen in the hydroponic growing media on plant growth indicator. The design of treatment used is the administration of oxygen in the hydroponic growing media on plant growth pakcoy. The treatments were: A; hydroponic media was given oxygen by using the aerator. B; hydroponic growing media were not given oxygen. Data analysis using test - paired t, and parameters observed were plant height, leaf number and root length. The results showed plant height and length of the roots of plants pakcoy significantly different between the media and the media were not given oxygen by oxygen, while the number of leaves of different pakcoy not significant. <div>Key Word: Pakcoy, Oxygen, planting media, hydroponics.</div>

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Stimulation of Light-Emitting Diode Treatment on Defence System and Changes in Mesocarp Metabolites of Avocados Cultivars (Hass and Fuerte) during Simulated Market Shelf Conditions

Agronomy ◽

10.3390/agronomy10111654 ◽

2020 ◽

Vol 10 (11) ◽

pp. 1654

Author(s):

Semakaleng Mpai ◽

Dharini Sivakumar

Keyword(s):

Antioxidant Activity ◽

Light Exposure ◽

Light Emitting Diode ◽

Persea Americana ◽

Light Emitting ◽

Fungicide Treatment ◽

Led Light ◽

Red Led ◽

Simulated Market ◽

Led Lights

The ability of light-emitting diode (LED) light treatment to reduce the anthracnose decay via its eliciting effects and thus induce resistance in the avocado (Persea americana), was investigated in this study to replace the current postharvest fungicide treatment. In experiment 1, the effect of blue or red LED lights (6 h per day) on the incidence of anthracnose in artificially inoculated (Colletotrichum gloesposorioides) and naturally infected avocados (cv. Fuerte and Hass) at 12–14 °C (simulated market shelf) for 4, 8, 14, and 16 days was investigated. In experiment 2, the effect of blue or red LED lights on the induced defence mechanism, fruit metabolites, antioxidant activity, and percentage of fruit reaching ready-to-eat stage was determined. Exposure to red LED light significantly reduced the anthracnose decay incidence in naturally infected cv. Fuerte on day 12 and in cv. Hass on day 16 compared to the prochloraz fungicide treatment by upregulating the PAL genes and maintaining the epicatechin content. Blue LED light accelerated the ripening in both cultivars, probably due to reduced D-mannoheptulose content. Red LED light exposure for 6 h per day and 12 days storage showed potential to replace the prochloraz treatment with improved ascorbic acid content and antioxidant activity.

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Effect of blue, green or red LED light on the functional quality of spinach (Spinacia oleracea L.)

Revista de la Facultad de Ciencias Agrarias UNCuyo ◽

10.48162/rev.39.010 ◽

2021 ◽

Vol 53 (1) ◽

pp. 98-108

Author(s):

Benjamín Battistoni ◽

Asunción Amorós ◽

María Luisa Tapia ◽

Víctor Hugo Escalona

Keyword(s):

Antioxidant Capacity ◽

Phenolic Compound ◽

Spinacia Oleracea ◽

Photon Flux ◽

Total Phenolic ◽

Led Light ◽

Spinacia Oleracea L ◽

Red Led ◽

Led Lights ◽

Compound Concentration

The present study employed white (W), blue (B: 468 nm), red (R: 629 nm) and green (G: 524 nm) monochromatic LED lights for 26 days, from 11:00 to 18:00 (7 h per day), with a average of photosynthetic photon flux density (PPFD) of 26.00 m-2 s-1 on two baby leaves of spinach (Spinacia oleracea L.) cultivars (Falcon F1 and Viroflay) grown in a hydroponic system. Regardless of the cultivar, the fresh and dry weights were positively influenced when the plants were irradiated by R-light in comparison to W-light. Independent of the cultivar, the leaves treated with B-light reached a significantly higher phenolic compound concentration than plants irradiated with W-light. With respect to antioxidant capacity, plants treated with B-light showed a significantly higher antioxidant capacity than those treated with W-light. According to the results, the use of LED lights is a promising technique for the production of antioxidant compound-enriched vegetables. Highlights - The fresh and dry weights were positively influenced when baby leaves spinach were irradiated by red LED light. - Baby leaves spinach treated with blue LED light reached a significantly higher phenolic compound concentration and antioxidant capacity. - The green LED light increased total phenolic compound concentration in baby leaves spinach.

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Effect of rhizobacteria strains on the induction of resistance in barley genotypes against Cochliobolus sativus

Hellenic Plant Protection Journal ◽

10.2478/hppj-2020-0009 ◽

2020 ◽

Vol 13 (2) ◽

pp. 83-92 ◽

Cited By ~ 1

Author(s):

A. Adam

Keyword(s):

Plant Growth ◽

Pseudomonas Putida ◽

Growth Parameters ◽

Disease Incidence ◽

Dry Weight ◽

Cochliobolus Sativus ◽

Resistance Level ◽

Wet Weight ◽

Number Of Leaves ◽

Barley Genotypes

SummaryEnhancement of the resistance level in plants by rhizobacteria has been proven in several pathosystems. This study investigated the ability of four rhizobacteria strains (Pseudomonas putida BTP1 and Bacillus subtilis Bs2500, Bs2504 and Bs2508) to promote the growth in three barley genotypes and protect them against Cochliobolus sativus. Our results demonstrated that all tested rhizobacteria strains had a protective effect on barley genotypes Arabi Abiad, Banteng and WI2291. However, P. putida BTP1 and B. subtilis Bs2508 strains were the most effective as they reduced disease incidence by 53 and 38% (mean effect), respectively. On the other hand, there were significant differences among the rhizobacteria-treated genotypes on plant growth parameters, such as wet weight, dry weight, plant height and number of leaves. Pseudomonas putida BTP1 strain was the most effective as it significantly increased plant growth by 15-32%. In addition, the susceptible genotypes Arabi Abiad and WI2291 were the most responsive to rhizobacteria. This means that these genotypes have a high potential for increase of their resistance against the pathogen and enhancement of plant growth after the application of rhizobacteria. Consequently, barley seed treatment with the tested rhizobacteria could be considered as an effective biocontrol method against C. sativus.

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PENGARUH KOMPOS SAMPAH KOTA DAN PUPUK KANDANG SAPI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN PAKCOY (BRASSICA RAPA, L. CHINENSIS) PADA ALUVIAL KABUPATEN INDRAMAYU

Gema Wiralodra ◽

10.31943/gemawiralodra.vol9.iss2.349 ◽

2018 ◽

Vol 9 (2) ◽

pp. 153-163

Author(s):

Wiwik Ambarsari ◽

Henly Yuliana

Keyword(s):

Plant Height ◽

Brassica Rapa ◽

Block Design ◽

Cattle Manure ◽

Growth And Yield ◽

Randomized Block Design ◽

Two Factors ◽

Number Of Leaves ◽

Experimental Garden

The study aimed to determine the effect of the combination of city waste compost and cattle manure on the growth and yield of pakcoy plants (Brassica rapa, L. Chinensis) in Aluvial, Indramayu Regency. The study was conducted at the Experimental Garden of the Faculty of Agriculture, Wiralodra University, Indramayu Regency from March to August 2018. This study used Factorial Pattern Randomized Block Design with two factors. The first factor is city waste compost and the second factor is cattle manure with 4 levels: 0%, 3.0%, 6.0%, and 9.0%, repeated twice. The results showed that there was an independent influence between city waste compost and cattle manure on plant height and number of leaves. The best combination to increase the feasibility weight of pakcoy consumption is by giving city waste compost 9.0% (S4) and cattle manure 6.0% (K3).

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Faculty Opinions recommendation of Continuous ultra-low-intensity artificial daylight is not as effective as red LED light in photodynamic therapy of multiple actinic keratoses.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.13499957.14879057 ◽

2012 ◽

Author(s):

Rik Roelandts

Keyword(s):

Photodynamic Therapy ◽

Actinic Keratoses ◽

Led Light ◽

Low Intensity ◽

Red Led

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Virulence of Aerial Conidia of Beauveria bassiana Produced under LED Light to Ctenocephalides felis (Cat Flea)

Journal of Pathogens ◽

10.1155/2018/1806830 ◽

2018 ◽

Vol 2018 ◽

pp. 1-4

Author(s):

Sarayut Pittarate ◽

Malee Thungrabeab ◽

Supamit Mekchay ◽

Patcharin Krutmuang

Keyword(s):

Beauveria Bassiana ◽

Adult Mortality ◽

Ctenocephalides Felis ◽

Fluorescent Light ◽

Malt Extract ◽

Led Light ◽

Red Led ◽

Aerial Conidia ◽

Different Color

Ctenocephalides felis is an ectoparasitic flea species commonly found on dogs and cats. The current study verified the in vitro virulence of conidia of the entomopathogenic fungus Beauveria bassiana produced under different color LED light (red, blue, purple, green, yellow, and white) to adults of C. felis. The fungal isolates were cultivated on malt extract agar (MEA). Bioassay treatments used aerial conidia in test tubes. Adult fleas were obtained from a house cat in Chiang Mai province, Thailand. The experiments were composed of one control and eleven treatment groups. All of the treatments with B. bassiana conidia caused adult mortality after an exposure of 12 h. Among the conditions used in this study, B. bassiana cultured under red LED and fluorescent light were the most effective in causing mortality (100 %) in adult fleas after 36 h. The experimental results indicate that these aerial conidia of B. bassiana have promising potential for use in control of C. felis adult stages.

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