Evaluation of two green composts for peat substitution in geranium (Pelargonium zonale L.) cultivation: Effect on plant growth, quality, nutrition, and photosynthesis

2018 ◽  
Vol 228 ◽  
pp. 213-221 ◽  
Author(s):  
Daniele Massa ◽  
Fernando Malorgio ◽  
Sara Lazzereschi ◽  
Giulia Carmassi ◽  
Domenico Prisa ◽  
...  
Keyword(s):  
Plant Growth ◽  
Pelargonium Zonale ◽  
Growth Quality

scholarly journals Shade Intensity Influences Water Use and Growth of Three Viburnum Species

2013 ◽  
Vol 31 (4) ◽  
pp. 259-266 ◽  
Author(s):  
Arjina Shrestha ◽  
Janet C. Cole
Keyword(s):  
Plant Growth ◽  
Water Use ◽  
Dry Weight ◽  
Curvilinear Relationship ◽  
Total Water ◽  
Shoot Ratio ◽  
Daily Water ◽  
Use Efficiency ◽  
Leaf Necrosis ◽  
Growth Quality

Water use, growth, and leaf necrosis of Burkwood viburnum, Korean spice viburnum, and leatherleaf viburnum were evaluated on plants grown in 0 (full sun), 30, or 60% shade during 2010 and 2011. In both years, total water use of Burkwood viburnum decreased with increased shade intensity. Water use of leatherleaf viburnum was lowest in 0% and highest in 30% shade. Daily water use was lower in 0% than in 30 or 60% shade for leatherleaf viburnum plants in August of both years and September of 2010 due to greater leaf necrosis, leaf abscission, and less growth in height and width. In both years, growth in height and width, and leaf number at harvest generally increased in all three species with increased shade intensity. All species had a larger leaf area, stem dry weight, and root dry weight in 30 and 60% than in 0% shade. Shade intensity did not influence root to shoot (R/S) ratio in Burkwood viburnum in 2010, but in 2011, a curvilinear relationship occurred between R/S ratio and shade intensity. Root to shoot ratio of Korean spice and leatherleaf viburnum decreased linearly in 2010 but curvilinearly in 2011 with increasing shade. Leaf necrosis ratings were lower in shaded plants of all three species in both years. Results indicate that greater plant growth, quality, and water use efficiency occurs when these three viburnum species are grown in shade than when they are grown in full sun.

scholarly journals Plant Growth and Cutting Production of Container-grown Pelargonium Stock Plants as Affected by N Concentration and N Form

1992 ◽  
Vol 117 (2) ◽  
pp. 234-238 ◽  
Author(s):  
Ruth Ganmore-Neumann ◽  
A. Hagiladi
Keyword(s):  
Plant Growth ◽  
N Uptake ◽  
Nitrogen Recovery ◽  
Recovery Efficiency ◽  
Pelargonium Zonale ◽  
Minimum Concentration ◽  
Nitrogen Recovery Efficiency ◽  
N Concentration ◽  
Mother Plants ◽  
Cutting Production

Stock plants of Pelargonium zonale `Empress' were grown for 130 days on coarse tuff medium in a greenhouse. Four N concentrations (50, 100,200, and 400 mg N/liter) and three NO3-: NH4+: ratios (70:30, 60:40, and 40:60) were applied. The development of mother plants, production of cuttings, and the recovery of applied N were measured. Number of cuttings was not affected by any treatments except for the low N concentration. The proportion of absorbed N was higher than that of water in the plants treated with 50 or 100 mg N/liter, while those fertilized with 200 or 400 mg N/liter absorbed more water relative to N uptake. Nitrogen recovery efficiency decreased from 70% to 10% for the 50- to 400-mg N/liter treatments, respectively. Percentage of applied N lost by leaching (30% to 70%), and N that could not be accounted for (0.5% to 20%), increased with increasing N concentration and NH4+ percentage in the solution. The minimum concentration to be used in fertilization of Pelargonium mother plants is 100 mg N/liter. Optimal N supplied ranged between 100 and 200 mg N/liter.

scholarly journals UV Lighting in Horticulture: A Sustainable Tool for Improving Production Quality and Food Safety

Horticulturae ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 9
Author(s):  
Danilo Loconsole ◽  
Pietro Santamaria
Keyword(s):  
Plant Growth ◽  
Uv Light ◽  
Economic Value ◽  
Biomass Accumulation ◽  
Production Quality ◽  
Uv Exposure ◽  
Postharvest Quality ◽  
Resistance Locus ◽  
High Doses ◽  
Growth Quality

Ultraviolet (UV) is a component of solar radiation that can be divided into three types defined by waveband: UV-A (315–400 nm), UV-B (280–315 nm), and UV-C (<280 nm). UV light can influence the physiological responses of plants. Wavelength, intensity, and exposure have a great impact on plant growth and quality. Interaction between plants and UV light is regulated by photoreceptors such as UV Resistance Locus 8 (UVR8) that enables acclimation to UV-B stress. Although UV in high doses is known to damage quality and production parameters, some studies show that UV in low doses may stimulate biomass accumulation and the synthesis of healthy compounds that mainly absorb UV. UV exposure is known to induce variations in plant architecture, important in ornamental crops, increasing their economic value. Abiotic stress induced by UV exposure increases resistance to insects and pathogens, and reduce postharvest quality depletion. This review highlights the role that UV may play in plant growth, quality, photomorphogenesis, and abiotic/biotic stress resistance.

scholarly journals Preliminary study on the effect of nitrogen fertilization on growth quality of Gynura procumbens

2021 ◽  
pp. 42-51
Author(s):  
Mohamad Fhaizal Mohamad Bukhori ◽  
Hawa Z. E. Jaafar ◽  
Ali Ghasemzadeh ◽  
Uma Rani Sinniah
Keyword(s):  
Plant Growth ◽  
Block Design ◽  
Maximum Yield ◽  
Yield Potential ◽  
Agronomic Management ◽  
Affected Plant ◽  
Two Factors ◽  
High Yields ◽  
Growth Quality

G. procumbens is an herbaceous medicinal plant. Despite the progressive reports on the potential pharmacological properties, many are overlooking at the importance of its agronomic requirements, especially in fertilization to produce high yields which have not been conclusively concluded. This study was carried out to examine the effects of nitrogen on growth quality. In this study of two factors, harvesting times and rate of nitrogen, a total of 12 combined treatments replicated three times with 108 plants were laid out according to randomized complete block design. Growth attributes were recorded in three harvests of triplicate samples to exhibit the trend for plant growth and quality, and statistically analysed. Nitrogen affected plant growth significantly (p≤0.05) with stronger effect on physiological attributes (p≤0.01). The results suggested that 0 nitrogen kg/ha at Week 12 and 90 nitrogen kg/ha at Week 4 is highly and least, respectively affected the morphology and physiology of G. procumbens. These attributes are controlled by the availability of usable nitrogen and agronomic management because nitrogen is needed in optimum quantity and must be in balance with other nutrients to achieve its maximum yield potential.

scholarly journals Effects of Exogenous Sucrose and Selenium on plant growth, Quality and Sugar Metabolism of Pea Sprouts

2021 ◽  
Author(s):  
Chuntao Tan ◽  
Liang Zhang ◽  
Xuewu Duan ◽  
Xirong Chai ◽  
Riming Huang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Sugar Metabolism ◽  
Growth Quality

scholarly journals The microbiome of medicinal plants: diversity and importance for plant growth, quality and health

2013 ◽  
Vol 4 ◽  
Author(s):  
Martina Köberl ◽  
Ruth Schmidt ◽  
Elshahat M. Ramadan ◽  
Rudolf Bauer ◽  
Gabriele Berg
Keyword(s):  
Medicinal Plants ◽  
Plant Growth ◽  
Growth Quality

Effect of plant growth regulators on growth, quality and yield of Dendrobium orchid under polyhouse

2020 ◽  
Vol 23 (2) ◽  
pp. 102-107
Author(s):  
S.L. Chawla ◽  
Dipal S. Bhatt ◽  
H.P. Shah ◽  
M.A. Patel ◽  
Sudha Patil
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Quality

Mechanisms of ethylene biosynthesis and response in plants

2015 ◽  
Vol 58 ◽  
pp. 61-70 ◽  
Author(s):  
Paul B. Larsen
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Ethylene Biosynthesis ◽  
Unsaturated Hydrocarbon ◽  
Flower Senescence ◽  
Detailed Knowledge ◽  
Plant Growth And Development ◽  
Step Process ◽  
Ethylene Response ◽  
Ethylene Signalling

Ethylene is the simplest unsaturated hydrocarbon, yet it has profound effects on plant growth and development, including many agriculturally important phenomena. Analysis of the mechanisms underlying ethylene biosynthesis and signalling have resulted in the elucidation of multistep mechanisms which at first glance appear simple, but in fact represent several levels of control to tightly regulate the level of production and response. Ethylene biosynthesis represents a two-step process that is regulated at both the transcriptional and post-translational levels, thus enabling plants to control the amount of ethylene produced with regard to promotion of responses such as climacteric flower senescence and fruit ripening. Ethylene production subsequently results in activation of the ethylene response, as ethylene accumulation will trigger the ethylene signalling pathway to activate ethylene-dependent transcription for promotion of the response and for resetting the pathway. A more detailed knowledge of the mechanisms underlying biosynthesis and the ethylene response will ultimately enable new approaches to be developed for control of the initiation and progression of ethylene-dependent developmental processes, many of which are of horticultural significance.

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