scholarly journals (42) Effects of Photoselective Shadecloths on Potted Dracaena and Anthurium Plants

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1053E-1054 ◽  
Author(s):  
Kent D. Kobayashi ◽  
Andrew F. Kawabata ◽  
Joanne S Lichty
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Plant Height ◽  
Light Quality ◽  
Peat Moss ◽  
Evaluation Scores ◽  
Potted Plant ◽  
Plant Habit ◽  
Height Increase

Photoselective shadecloths that manipulate light quality may enable nursery growers to achieve desired plant growth. This ability to manage plant habit could give growers an additional nonchemical tool to improve potted plant quality. The objective of this study was to determine growth and flowering responses of potted Dracaena and Anthurium plants to four shadecloths. Dracaena deremensis `Janet Craig' and Dracaena marginata `Colorama' cane top-cuttings were placed in 70% black cinder: 30% peat moss media. Anthurium `Lola' liners were transplanted into 100% black cinder medium. Plants were grown in a greenhouse under 70% shadecloths: black, gray, red, and blue. Four months after planting, Dracaena `Janet Craig' had more new leaves under red shadecloth (10.4) compared to other shadecloths (8.9–9.3). Leaf area was less with red shadecloth (340 cm2) than other treatments (380-388 cm2). Plants under the red shadecloth had the lowest grower evaluation scores (5.4; 1 = poor, 10 = excellent) than those under other shadecloths (7.2–8.2), but all plants were considered marketable. Dracaena `Colorama' plants under red shadecloth had the greater plant height increase (20.1 cm) than those under other shadecloths (10.1–13.2 cm). Red shadecloth resulted in more new leaves (26.2) compared to other treatments (18.0–21.4). Anthurium `Lola' flower height 9 months after transplanting was less under red shadecloth (23.0 cm) than under black (33.0 cm). The number of flowers/pot was greater under red shadecloth (3.17) compared to those under other shadecloths (0.50–1.33). Flower size was greater (35.2 cm2) under red shadecloth than under black (20.0 cm2). Photoselective shadecloths may be used to nonchemically manipulate plant growth and improve the quality of potted Dracaena and Anthurium plants.

scholarly journals Optimizing hydroponic culture media and NO3−/NH4+ ratio for improving essential oil compositions of purple coneflower (Echinacea purpurea L.)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fatemeh Ahmadi ◽  
Abbas Samadi ◽  
Ebrahim Sepehr ◽  
Amir Rahimi ◽  
Sergey Shabala
Keyword(s):  
Particle Size ◽  
Essential Oil ◽  
Plant Growth ◽  
Plant Height ◽  
Growth Parameters ◽  
Echinacea Purpurea ◽  
Peat Moss ◽  
Root Weight ◽  
Total Biomass ◽  
Growing Media

AbstractMedicinal plants represent a valuable commodity due to beneficial effects of their natural products on human health, prompting a need for finding a way to optimize/increase their production. In this study, a novel growing media with various perlite particle size and its mixture with peat moss was tested for hydroponic-based production of Echinacea purpurea medicinal plant under greenhouse conditions. The plant growth parameters such as plant height, total fresh leave weight, fresh root weight, total biomass, total chlorophyll, leaf area, and essential oil compositions were assessed. Perlite particle size in the growing media was varied from very coarse (more than 2 mm) to very fine (less than 0.5 mm), and the ratio between perlite and peat moss varied from 50:50 v/v to 30:70 v/v. In addition, two nitrate (NO3−) to ammonium (NH4+) ratios (90:10 and 70:30) were tested for each growing media. The medium containing very fine-grade perlite and 50:50 v/v perlite to peat moss ratio was found to be most optimal and beneficial for E. purpurea performance, resulting in maximal plant height, fresh and dry weight, leaf surface area, and chlorophyll content. It was also found that an increase in NO3−/NH4+ ratio caused a significant increase in plant growth parameters and increase the plant essential oil content. The major terpene hydrocarbons found in extract of E. purpurea with the best growth parameters were germacrene D (51%), myrcene (15%), α-pinene (12%), β-caryophyllene (11%), and 1-Pentadecene (4.4%), respectively. The percentages of these terpene hydrocarbons were increased by increasing of NO3−/NH4+ ratio. It can be concluded that decreasing the perlite particle size and increasing the NO3−/NH4+ ratio increased the plant growth parameters and essential oil compositions in E. purpurea.

scholarly journals Pengaruh Pemberian Pupuk Organik Cair Nasa Dan Pupuk Kompos Terhadap Pertumbuhan Tanaman Kenaf ( Hibiscus cannabinus L)

2018 ◽  
Vol 7 (1) ◽  
pp. 6
Author(s):  
Hairin Juanda ◽  
Tutik Nugrahini ◽  
Mahdalena Mahdalena
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Plant Height ◽  
Analysis Of Variance ◽  
Organic Fertilizer ◽  
Hibiscus Cannabinus ◽  
Stem Diameter ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design

Effect of NASA Liquid Organic Fertilizer and Compost Fertilizer on Kenaf Plant Growth (Hibiscus cannabinus L). This study aims to determine the effect of NASA POC, compost fertilizer and the interaction of NASA POC and compost fertilizer on kenaf plants. This research was carried out at East Borneo Samarinda Indonesia. with a time of ± 4 months, starting from June to September 2016. The design of the study uses factorial completely randomized design (CRD) consisting of 2 treatments and 4 replications. The treatment consists of 2 factors. The first factor is the administration of NASA POC consisting of 4 levels, namely: j0: Control (without treatment), j1: POC with a concentration of 10 ml / liter of water, j2: POC with a concentration of 15 ml / liter of water, j3: POC with a concentration of 20 ml / liter of water. The second factor is Compost fertilizer consisting of 4 levels, namely: k0: Without the provision of Compost Fertilizer, k1: Composting 500 gram / polybag, k2: Composting Fertilizer 700 grams / polybag, k3: Composting 800 grams / polybag. From the analysis of variance showed that the effect of giving NASA POC (J), compost (K) and the interaction of NASA POC and compost (JK) did not affect the parameters of plant height 30 DAP, 60 DAP and 90 DAP, stem diameter 30 DAP, 60 DAP and 90 DAP, number of leaves 30 DAP, 60 DAP and 90 DAP, leaf area 30 DAP, 60 DAP and 90 DAP. 

scholarly journals Performance of rice seeds treated with zinc, boron, and molybdenum

2013 ◽  
Vol 35 (4) ◽  
pp. 532-539 ◽  
Author(s):  
Lizandro Ciciliano Tavares ◽  
Daniel Ândrei Robe Fonseca ◽  
André Pich Brunes ◽  
Cassyo de Araujo Rufino ◽  
Géri Eduardo Meneguello ◽  
...  
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Initial Growth ◽  
Rice Seedlings ◽  
Aerial Parts ◽  
Seedling Length ◽  
Randomized Experimental Design ◽  
Physiological Quality ◽  
Rice Seeds

The objective of this study was to assess physiological quality of seeds and the initial growth of lowland rice seedlings, cv. PUITA INTA-CL, treated with a product based on Zinc, Boron and Molybdenum. The following dosages of product were used: 0 (control), 50, 100, 150 and 200 mL.100 kg-1 seed. A completely randomized experimental design was used, with 10 treatments and four replications. Physiological quality of seeds was assessed by following tests: germination; first count of germination; and length and dry phytomass of seedlings. The initial growth was assessed at 7, 14, 21, 35, and 42 days after emergence (DAE) through plant height, leaf area and dry phytomass of aerial parts and roots. It was concluded that the treatment of rice seeds with the product containing Zinc, Boron and Molybdenum up to the dosage tested of 200 mL.100 kg-1 seed does not influence germination, first count of germination, and the dry phytomass of aerial parts and roots; however, negatively influences seedling length. In addition, it also promotes greater plant height, higher leaf area, higher production of dry phytomass of seedlings, and increase on the growth rate, until 42 DAE.

Effect of various levels of nitrogen on growth, yield and quality of fodder maize

2017 ◽  
Vol 2 (02) ◽  
pp. 197-200
Author(s):  
Rajeev Kumar ◽  
Sanjeev Kumar ◽  
Anil Kumar ◽  
B. B. Singh ◽  
Ravendra Singh ◽  
...  
Keyword(s):  
Field Experiment ◽  
Leaf Area ◽  
Plant Height ◽  
Crude Protein ◽  
Dry Matter ◽  
Growth Yield ◽  
Forage Yield ◽  
Fresh Weight ◽  
Yield And Quality

A field experiment was conducted in the Department of Agricultural Botany, Janta Mahavidiyalaya Ajeetmal, Auraiya (C. S. J. M. University, Kanpur) during 2014, to evaluate the effect of various levels of nitrogen on growth, yield and quality of fodder maize. 3 treatments were taken up (viz.,T1 75, T2 100 and T3 125 kg nitrogen ha-1 along with control (T0).Plant height, dry matter accumulations (t ha-1), forage yield (t ha-1) increased with increasing levels of nitrogen, while stem diameters (cm), leaf area (cm2), fresh weight (g), crude protein percent decreased with increasing levels of nitrogen.

scholarly journals Effect of Sowing Dates and Botanical Seed Pelleting on Plant Growth, Bulb Yield and Quality of Onion (Allium cepa L.)

2020 ◽  
Author(s):  
Abhishek Panwar ◽  
Ashok K. Thakur ◽  
Pramod Sharma ◽  
Shivangi Negi ◽  
Cherry Nalwa ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Growth Yield ◽  
Melia Azedarach ◽  
Yield And Quality ◽  
Sowing Dates ◽  
Allium Cepa L ◽  
Leaf Powder ◽  
Bulb Yield

Background: Onion (Allium cepa L.) is a major bulbous vegetable as well as condiment of family Alliaceae grown in India, originated in Iran and Pakistan. Seed pelleting is a mechanism of applying various materials to the seed that can enhance the seed quality with respect to physiological, physical and health attributes. Seed pelleting make it easy to handle small and irregular shaped seeds.Methods: The present investigation was conducted in the field of Department of Seed Science and Technology, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan during seasons of 2016-17 and 2017-18. Result: This experiment comprised of pelleted seeds with different botanicals carried out to determine the effect of sowing dates and seed pelleting and their interactions on plant growth, yield and quality of bulb crop. All the factors in the experiment as well as their interactions showed significant influence on plant growth, yield and yield contributing characters in onion. The seeds pelleted with Azadirechta indica leaf powder + clay and Melia azedarach leaf powder + clay sown directly showed maximum values w.r.t. emergence (91.50 %), plant height at 60 days after sowing (35.35 cm), average leaf length (38.43cm), number of leaves per plant (8.67), number of days to harvesting (233.49), polar diameter (46.72 mm), equatorial diameter (57.77 mm), bulb size index (2699.74 ), neck thickness (12.12 mm), number of bulb per plot (89.00) average bulb weight (75.24 g), bulb yield (6.67 kg per plot or 400.01 q per ha), plant height before neck fall stage (58.55 cm). From the present studies, it can be concluded that onion seeds pelleted with Azadirechta indica leaf powder + clay and Melia azedarach leaf powder + clay showed significant effects for enhancing bulb quality, growth, quality and yield of bulb crop raised through direct seeding.

scholarly journals End-of-day Lighting with Different Red/Far-red Ratios Using Light-emitting Diodes Affects Plant Growth of Chrysanthemum × morifolium Ramat. ‘Coral Charm’

HortScience ◽  
2007 ◽  
Vol 42 (7) ◽  
pp. 1609-1611 ◽  
Author(s):  
Janni Bjerregaard Lund ◽  
Theo J. Blom ◽  
Jesper Mazanti Aaslyng
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Light Quality ◽  
Light Emitting Diodes ◽  
Dry Weight ◽  
Chrysanthemum Morifolium ◽  
Lateral Side ◽  
Light Emitting ◽  
Potted Plants ◽  
Future Production

Controlling plant height without the use of plant growth retardants is one of the goals in future production of potted plants. Light quality with a low red to far-red ratio (R:FR) increases plant height. In this trial, the effects of light quality [R:FR ratio of 0.4, 0.7, and 2.4 (R = 600–700 nm, FR = 700–800 nm)] at the end of day were investigated on potted chrysanthemums using growth chambers. After a 9-h photoperiod, the 30-min end-of-day lighting was provided by light-emitting diodes at low irradiance by maintaining either red = 1 μmol·m−2·s−1 (Rcon) or far-red = 1 μmol·m−2·s−1(FRcon). After 3 weeks of end-of-day lighting, plants given the lowest end-of-day ratios (R:FR of 0.4 or 0.7) were taller than control plants (R:FR = 2.4). For low ratios of R:FR (0.4), the actual intensities of R and FR did not affect plant height, whereas for higher ratios of R:FR (0.7 and 2.4), plant height was greater for FRcon than for Rcon. Leaf area of the lateral side shoots was lower for plants treated with an R:FR of 0.4 compared with those of controls. Dry weight, stem diameter, number of internodes, and number of lateral branches were unaffected by the end-of-day ratio.

scholarly journals Effects of Pinching, Number of Cuttings per Pot, and Plant Growth Regulators on Height Control of Purple Firespike

2015 ◽  
Vol 25 (1) ◽  
pp. 71-75 ◽  
Author(s):  
Amir Rezazadeh ◽  
Richard L. Harkess
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Plant Height ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Stem Elongation ◽  
Dry Weight ◽  
Maximum Height ◽  
Height Control ◽  
Leaf Dry Weight

Purple firespike (Odontonema callistachyum), native to Central America, has potential for use as a new flowering potted plant. The effects of number of pinches (zero, one, or two) and number of cuttings (one, two, or three) per 6-inch pot were evaluated on the control of plant height. Plant height was suppressed as the pinch number increased. The greatest reduction was recorded with one cutting per pot and two pinches. The maximum number of branches per pot was recorded with two pinches and three cuttings per pot. In a second experiment, plant growth regulators (PGR) were also tested for efficacy of height control; 2 weeks after pinching, foliar sprays of paclobutrazol, flurprimidol, daminozide, chlormequat, and a tank-mix of daminozide + chlormequat or media drenches of paclobutrazol, uniconazole, or flurprimidol were applied. Plant height, leaf area, and leaf dry weight were recorded at 3, 6, and 9 weeks after PGR application. Maximum height control was obtained with uniconazole drench at 8 ppm, resulting in plants 22 cm tall, 61% shorter than the untreated control (56 cm); however, it resulted in severe leaf distortion. Plant height was 56% and 46% shorter than the control using drenches of paclobutrazol at 30 ppm and flurprimidol at 15 ppm, respectively. Daminozide spray at 2000 ppm and tank-mix of daminozide + chlormequat at 4500/1500 ppm suppressed stem elongation by 20.3% and 19%, respectively. Plants treated with paclobutrazol drench at 30 ppm reduced leaf area and leaf dry weight compared with other PGRs. Chlormequat spray at tested concentrations was ineffective for controlling firespike plant growth. The most attractive potted plants were produced using a drench application of paclobutrazol at 10 or 15 ppm.

scholarly journals 259 Effect of Photoperiod on Growth and Flowering of Ornamental Ginger Species

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 436A-436
Author(s):  
Mauricio José Sarmiento ◽  
Jeff S. Kuehny
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Plant Height ◽  
Potted Plants ◽  
Production Practices ◽  
Number Of Shoots

Gingers are tropical perennials from the Zingiberaceae family with attractive long-lived flowers that can be grown as potted plants in subtropical and temperate zones under protected conditions. Development of production practices for this new flowering pot crop is essential for optimum plant growth. The effect of photoperiod on growth and flowering was evaluated on Curcuma gracillima, C. cordata, C. alismatifolia, C. petiolata `Emperor', Curcuma `Chang Mai dwarf', Siphonichilus decora, and S. kirkii. Plants were grown under daylengths of 8, 12, 16, and 20 h. Plant height, number of new leaves, number of shoots, and leaf area were larger for plants growing under an extended daylength (16- and 20-h photo-period) than for plants under 8 and 12 h. Plants grown under an 8-h daylength approached dormancy sooner than those growing under 12, 16, or 20 h of light, and no flowering occurred.

scholarly journals Karakter Agronomi yang Berpengaruh Terhadap Hasil dan Mutu Rajangan Kering Tembakau Temanggung

2016 ◽  
Vol 3 (1) ◽  
pp. 17
Author(s):  
. Djumali
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Block Design ◽  
Dry Weight ◽  
Leaf Angle ◽  
Yield And Quality ◽  
Leaf Weight ◽  
Genetic Characters ◽  
Leaf Dry Weight

<p>Hasil dan mutu tembakau temanggung merupakan hasil interaksi pengaruh genetik tanaman dan kondisi ling-kungan tumbuh. Pada tembakau virginia, peubah-peubah agronomi tanaman merupakan karakter genetik ta-naman yang mempengaruhi hasil dan mutu. Pada tembakau temanggung, hal ini belum diketahui. Penelitian yang bertujuan untuk memperoleh peubah agronomi sebagai karakter genetik tembakau temanggung dan ka-itannya dengan hasil dan mutu rajangan kering dilakukan di rumah kaca Balittas, Malang sejak Maret–Agus-tus 2008. Sembilan kultivar tembakau temanggung disusun dalam rancangan acak kelompok yang diulang ti-ga kali. Pengamatan dilakukan terhadap peubah agronomi yang dimulai pada saat pemangkasan sampai pa-nen akhir. Hasil penelitian menunjukkan bahwa peubah agronomi yang meliputi tinggi tanaman, sudut daun, luas daun, jumlah daun, bobot spesifik daun, luas daun per helai, bobot kering tanaman, bobot kering tajuk, bobot kering akar, rasio tajuk/akar, bobot kering batang, bobot kering daun, bobot kering bunga, dan bobot kering tunas samping merupakan karakter genetik tembakau temanggung. Karakter agronomi tersebut mem-pengaruhi hasil dan mutu rajangan kering dengan total pengaruh masing-masing sebesar 92,8% dan 76,7%. Lima karakter agronomi utama yang mempengaruhi hasil rajangan kering adalah luas daun per helai, jumlah daun, bobot spesifik daun, tinggi tanaman, dan bobot kering daun dengan total pengaruh sebesar 89,4%. Adapun lima karakter agronomi utama yang mempengaruhi mutu rajangan kering adalah luas daun, rasio tajuk/akar, bobot kering tanaman, bobot kering bunga, dan tinggi tanaman dengan total pengaruh sebesar 75,7%.</p><p> </p><p>The yield and quality of temanggung tobacco are influenced by plant genetic and growth environmental. In virginia tobacco, plant agronomic variables were genetical characteristics determining yield and quality. The effect of agronomical characteristic on yield and quality of temanggung tobacco is not yet well defined. The research which aim to find plant agronomical variables as genetic characters and its relationship on dry slice and quality of temanggung tobacco, was conducted in glass house of IToFCRI, Malang from March–August 2008. Nine cultivars of temanggung tobacco were arranged in randomized block design and three replica-tions. The results showed that agronomic variables i.e. plant height, leaf angle, leaf area, number of leaf, spe-cific leaf weight, leaf area per strand, plant dry weight, shoot dry weight, root dry weight, shoot/root ratio, bast dry weight, leaf dry weight, flower dry weight, and sucker dry weight were genetic characters of temang-gung tobacco, which had effect on yield and quality with total effect of them were 92.8% and 76.7% res-pectively. Leaf area per strand, number of leaf, specific leaf weight, plant height, and leaf dry weight were agronomical characteristics which had significant effect on dry slice yield of 89.4%. Leaf area, shoot/ root ra-tio, plant dry weight, flower dry weight, and plant height were agronomical characteristics which had signi-ficant effect on quality of 75.7%.</p>

scholarly journals RESPON TANAMAN DAHLIA (Dahlia pinnata) PADA BERBAGAI MACAM MEDIA TANAM DAN PUPUK ORGANIK CAIR

2020 ◽  
Vol 3 (2) ◽  
pp. 141
Author(s):  
Libria Widiastuti
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Organic Fertilizer ◽  
Fertilizer Treatment ◽  
Central Java ◽  
Top Soil ◽  
West Sumatra ◽  
Flower Diameter ◽  
Good For

Dahlias have a high potential for development in West Sumatra Province. This is based on a number of cities in West Sumatra such as Bukit Tinggi and Agam Regency which have designated themselves as "The City of Dahlia" to develop the potential of this biological resource. The objectives to be achieved in this study are: (1) to determine the effect of various types of planting media that are good for growth and quality of flowers on dahlia plants. (2) to determine the effect of various types of liquid organic fertilizer which is good for growth and flower quality in dahlia plants. (3) to determine the interaction of various types of planting media and liquid organic fertilizer types on the growth and quality of flowers in seruni plants. This research was conducted from July to October 2019 in Kudu Baki Sukoharjo, Central Java, with a height of 100 meters above sea level. The experiments were arranged in a Completely Randomized Design (CRD), which consisted of two factors and three replications. Kinds of Planting Media (M) consist of 4 levels, namely: top soil, husk charcoal, bamboo leaf humus, and fern. Liquid Organic Fertilizer (P) consists of 3 levels, namely: IN Grow, GDM, and Grow more. The results showed that the treatment of organic fertilizer in Grow Grow and rice husk charcoal growing media showed the highest results significantly for all observations, namely plant height, leaf area, flower appearance, flower diameter, tuber diameter and harvest age. Growmore fertilizer treatment and top soil planting media showed the lowest results significantly for all observed parameters, namely plant height, leaf area, flower appearance, harvest age, flower diameter and plant shelf life. There was no interaction between the treatment types of the planting media and the types of liquid organic fertilizer on all observational parameters.

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