scholarly journals Response of Interspecific Geraniums to Waste Wood Fiber Substrates and Additional Fertilization

Agriculture ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 119
Author(s):  
Agnieszka Zawadzińska ◽  
Piotr Salachna ◽  
Jacek S. Nowak ◽  
Waldemar Kowalczyk
Keyword(s):  
Growth Parameters ◽  
Wood Fiber ◽  
Ornamental Plants ◽  
High Quality ◽  
Waste Wood ◽  
Sustainable Horticulture ◽  
Macro And Micronutrients ◽  
Leaf Greenness ◽  
Greenness Index ◽  
Cu And Zn

Promotion of sustainable horticulture via wider use of peat substrate substitutes makes wood fiber an increasingly popular substrate component. Interspecific geraniums are plants of huge potential in the floriculture market, but there are not enough specific guidelines on their cultivation. This study investigated the effectiveness of enriching peat substrate with 10%, 20%, 30%, or 40% (by volume) waste wood fiber in the pot cultivation of interspecific geraniums cv. ‘Calliope Dark Red’. It also examined plant response to additional fertilization with nitrogen in the form of Ca(NO3)2. Plants grown in the substrate with 10% and 20% of wood fiber did not differ in the leaf greening index, flower weight, and visual score from the plants grown in control (100% peat substrate). Wood fiber content of 40% negatively affected all growth parameters and leaf content of macro- and micronutrients. The plants growing in the peat substrate enriched with 20% of waste wood fiber and fertilized with nitrogen had the highest leaf greenness index, the greatest number of flowers, and the highest content of N, P, Ca, Na, Fe, Mn, Cu, and Zn. In summary, the study demonstrated that high quality ornamental plants can be successfully grown in peat substrate containing 20% of waste wood fiber and additionally fertilized with nitrogen.

scholarly journals SPAD Leaf Greenness Index: Green Mass Yield Indicator of Maize (Zea mays L.), Genetic and Agriculture Practice Relationship

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 830
Author(s):  
Piotr Szulc ◽  
Jan Bocianowski ◽  
Kamila Nowosad ◽  
Waldemar Zielewicz ◽  
Joanna Kobus-Cisowska
Keyword(s):  
Mineral Fertilizer ◽  
Group Method ◽  
Growth Stages ◽  
Arithmetic Means ◽  
Stay Green ◽  
Plant Nitrogen ◽  
Green Mass ◽  
The Impact ◽  
Leaf Greenness ◽  
Greenness Index

The study presents the results of two field studies (Experiment I, Experiment II), whose aim was to assess the impact of agriculture factors on maize green mass and leaf greenness index (Soil and Plant Analysis Development, SPAD) in critical growth stages, as well as to determine the relationship between the SPAD index and the yield of green maize for ensiling. It was shown that thermal and humidity conditions in maize growing seasons determined the value of the SPAD leaf greenness index and the yield of maize harvested for silage. Row application of mineral fertilizer (N, NP) and selection of “stay-green” varieties guarantee a higher yield of maize green mass. Growing maize in direct sowing reduces chlorophyll content expressed in SPAD units, thereby reducing plant nitrogen condition, which significantly decreases the yield of biomass intended for silage. The SPAD leaf greenness index determined in critical stages of maize growth can be considered as a yield predictor of green mass for ensiling. The examined maize cultivars were divided into two groups on the basis of hierarchically grouping using the unweighted pair group method of arithmetic means. The first group comprised cultivars SY Cooky and Drim “stay-green,” while the second one included cultivars ES Paroli “stay-green” and ES Palazzo.

scholarly journals Effect of growth regulator Kelpak SL on the formation of aboveground biomass of Festulolium braunii (K. Richt.) A. Camus

2013 ◽  
Vol 66 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Jacek Sosnowski ◽  
Kazimierz Jankowski ◽  
Beata Wiśniewska-Kadźajan
Keyword(s):  
Growth Regulator ◽  
Aboveground Biomass ◽  
Leaf Blade ◽  
Biomass Yield ◽  
Stem Elongation ◽  
Soil Material ◽  
Natural Plant ◽  
Full Period ◽  
Leaf Greenness ◽  
Greenness Index

A study on the cultivation of <em>Festulolium braunii</em> cv. 'Felopa' was carried out using polyurethane rings with a diameter of 36 cm and a height of 40 cm, which were sunk into the ground to a depth of 30 cm and filled with soil material. In this experiment, Kelpak SL was used as a bioregulator. It consists of natural plant hormones such as auxins (11 mg in dm<sup>3</sup>) and cytokinins (0.03 mg in dm<sup>3</sup>). The experimental factors were as follows: A1-control; A2 – 20% solution of the growth regulator; A3 – 40% solution; and A4 – 60% solution. The preparation was applied to all three regrowths in the form of spray, at a rate of 3 cm<sup>3</sup> ring<sup>-1</sup>, at the stem elongation stage. The full period of this experiment was in the years 2010–2011. During this time, detailed investigations were carried out on aboveground biomass yield (g DM ring<sup>-1</sup>), number of shoots (pcs ring<sup>-1</sup>), leaf blade length (cm), width of the leaf blade base (mm), leaf greenness index (SPAD). The study showed a significant effect of the growth regulator on the formation of <em>Festulolium braunii</em> biomass. However, its highest effectiveness was observed when the 60% solution was applied.

Opportunities for Composites from Recycled Wood Based Resources

1992 ◽  
Vol 266 ◽  
Author(s):  
Theodore H. Wegner ◽  
John A. Youngquist ◽  
Roger M. Rowell
Keyword(s):  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Wood Fiber ◽  
Pulp Mill ◽  
Waste Stream ◽  
Waste Materials ◽  
Demolition Waste ◽  
Waste Wood ◽  
Agriculture Wastes

AbstractA reduction is urgently needed in the quantities of industrial and municipal solid waste materials that are currently being landfilled. Major components of municipal solid waste include waste wood, paper, agriculture wastes, and other biomass fibers. In 1990, there were approximately 80 million tons of 6,000 different paper and paperboard products and 5.8 million tons of wood in the municipal solid waste stream. There are also potential millions of tons of wood fiber in timber thinnings, industrial wood waste, demolition waste, pallets, and pulp mill sludges. These materials offer great opportunities as recycled ingredients in wood-based composites. This paper discusses possibilities for manufacturing selected composites from these materials as well as materials which coexist with the wood-based resources such as plastics, fly ash, and gypsum.

scholarly journals Growth and Properties of InGaN and AlInGaN Thin Films on (0001) Sapphire

1996 ◽  
Vol 1 ◽  
Author(s):  
E. L. Piner ◽  
F. G. McIntosh ◽  
J. C. Roberts ◽  
M. E. Aumer ◽  
V. A. Joshkin ◽  
...  
Keyword(s):  
Thin Films ◽  
Growth Parameters ◽  
Band Edge Emission ◽  
High Quality ◽  
Electrical And Optical Properties ◽  
Double Crystal ◽  
Lattice Constants ◽  
Mocvd Reactor ◽  
Vegard’S Law ◽  
Lattice Matched

High quality InGaN films have led to the development of LEDs and blue lasers. The quaternary AlInGaN however, represents a more versatile material since the bandgap and lattice constant can be independently varied. We report on such films grown on (0001) sapphire substrates in an atmospheric pressure MOCVD reactor at 750-800°C. The ternary films have a composition of up to 40% InN and the quaternary films were grown in the composition range of 0 to 20% AlN and 0 to 20% InN. The quaternary compositions studied by EDS and the lattice constants from double crystal XRD followed Vegard's law indicating solid solubility for the range studied. Room temperature PL is dominated by band edge emission for InGaN and AlInGaN, at low AlN%. Higher AlN alloys of AlInGaN had PL dominated by deep levels. AlInGaN/InGaN and AlGaN/InGaN heterostructures were grown with abrupt interfaces. We emphasize the most important growth parameters for the growth of high quality ternary and quaternary thin films. The structural, electrical and optical properties of these In-based ternary and quaternary films and their lattice matched and strained heterostructures will also be presented.

Transfer of Heavy Metals (Cd, Pb, Cu and Zn) from Roadside Soil to Ornamental Plants in Nanjing, China

2011 ◽  
Vol 356-360 ◽  
pp. 3051-3054 ◽  
Author(s):  
Zhu Hong Ding ◽  
Xin Hu
Keyword(s):  
Heavy Metals ◽  
Inductively Coupled Plasma ◽  
Ornamental Plants ◽  
Translocation Factor ◽  
Emission Spectrometry ◽  
Roadside Soil ◽  
Inductively Coupled ◽  
Nanjing City ◽  
Species Specific ◽  
Cu And Zn

Roadside soil, dusts, and three ornamental plants-Begoniaceae (Begonia semperflorens Link et Otto), Tagetes (Tagetes erecta Linn.), and Salvia (Salvia splendens Ker-Gawle) were collected from urban arteries in Nanjing City, China. Concentrations of metals (Pb, Cd, Cu and Zn) were analyzed using inductively coupled plasma atom emission spectrometry and inductively coupled plasma mass spectrometry. Cd was the most important contaminant in roadside soil and dusts. Generally, Begoniaceae accumulated more metals than Tagetes and Salvia. The order of bioconcentration factor values for three kinds of plants were Cd > Cu > Zn > Pb, suggesting Cd was more easily accumulated by ornamental plants than Zn and Pb from soils to roots. The values of the translocation factor show the significant species specific characteristics on the ability of metals (Cd, Cu, Zn and Pb) translocation from roots to leaves. Begoniaceae was recommended as a bioindicator of heavy metals in the urban environment.

Electric–elastic properties of a novel high-quality CdTeMoO6 piezoelectric crystal

CrystEngComm ◽  
2018 ◽  
Vol 20 (37) ◽  
pp. 5602-5608 ◽  
Author(s):  
Conggang Li ◽  
Zeliang Gao ◽  
Xiangxin Tian ◽  
Qian Wu ◽  
Weiqun Lu ◽  
...  
Keyword(s):  
Single Crystals ◽  
Elastic Properties ◽  
Growth Parameters ◽  
Piezoelectric Crystal ◽  
High Quality ◽  
Bulk Single Crystals ◽  
Complete Sets ◽  
Elastic Coefficients

Bulk single crystals of CdTeMoO6 and its optimized growth parameters and the complete sets of dielectric, piezoelectric and elastic coefficients have been investigated.

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