Growth of Dracaena marginata and Spathiphyllum ‘Petite’ in Sphagnum Peat- and Coconut Coir Dust-based Growing Media

1999 ◽  
Vol 17 (1) ◽  
pp. 49-52 ◽  
Author(s):  
Robert H. Stamps ◽  
Michael R. Evans
Keyword(s):  
Growth Parameters ◽  
Cocos Nucifera ◽  
Greenhouse Production ◽  
Growing Media ◽  
Sphagnum Peat ◽  
Affected Plant ◽  
Coir Dust ◽  
Media Component ◽  
The Media ◽  
Cocos Nucifera L

Abstract A comparison was made of Canadian sphagnum peat (SP) and Philippine coconut (Cocos nucifera L.) coir dust (CD) as growing media components for greenhouse production of Dracaena marginata Bak. and Spathiphyllum Schott ‘Petite’. Three soilless foliage plant growing mixes (Cornell, Hybrid, University of Florida #2 [UF-2]) were prepared using either SP or CD and pine bark (PB), vermiculite (V), and/or perlite (P) in the following ratios (% by vol): Cornell = 50 CD or SP:25 V:25 P, Hybrid = 40 CD or SP:30 V:30 PB, UF-2 = 50 CD or SP: 50 PB. Dracaena root growth was not affected by treatments but there were significant mix × media component interactions that affected plant top growth parameters. In general, the growth and quality of D. marginata were reduced by using CD in Cornell, had no effect in Hybrid, and increased in UF-2. S. ‘Petite’ grew equally well in all growing mixes regardless of whether CD or SP was used; however, plants grew more in Cornell and Hybrid than in UF-2. S. ‘Petite’ roots, which were infested with Cylindrocladium spathiphylli, had higher grades when grown in CD than when the media contained SP.

scholarly journals Growth of Dieffenbachia maculata `Camille' in Growing Media Containing Sphagnum Peat or Coconut Coir Dust

HortScience ◽  
1997 ◽  
Vol 32 (5) ◽  
pp. 844-847 ◽  
Author(s):  
Robert H. Stamps ◽  
Michael R. Evans
Keyword(s):  
Pore Space ◽  
Cocos Nucifera ◽  
Greenhouse Production ◽  
Growing Media ◽  
Sphagnum Peat ◽  
Electrical Conductivities ◽  
Coir Dust ◽  
Foliage Plant ◽  
Initial Medium ◽  
Water Holding

A comparison was made of Canadian sphagnum peat (SP) and Philippine coconut (Cocos nucifera L.) coir dust (CD) as growing media components for Dieffenbachia maculata [(Lodd.) G. Don] `Camille' greenhouse production. Three soilless foliage plant growing mixes [Cornell, Hybrid, Univ. of Florida #2 (UF-2)] were prepared using either SP or CD and pine bark (PB), vermiculite (V), and/or perlite (P) in the following ratios (percent by volume): Cornell = 50 CD or SP:25 V:25 P, Hybrid = 40 CD or SP:30 V:30 PB, UF-2 = 50 CD or SP:50 PB. Initial CI concentrations and electrical conductivities were higher for CD-containing media (CDM) than SP-containing media (SPM). At termination, Ca, Mg, and NO3-N concentrations were higher for SPM than CDM. Bulk densities were lower for CDM than SPM for one medium, but not for the others. Water-filled pore space (W-FPS) and water-holding capacity (W-HC) were larger and air-filled pore space (A-FPS) generally was smaller for CDM than SPM. Cornell had the highest W-FPS and W-HC, lowest A-FPS and percentage of large particles, and produced the highest grade and heaviest plants. Plant top grades, fresh mass and overall mass, but not root grades and mass, were higher for CDM than SPM. Plant mass was positively correlated with initial medium W-HC but not with A-FPS. Lower K in mix UF-2 compared to the mixes containing vermiculite may have been partly responsible for the lesser growth in that mix.

scholarly journals 164 THE POTENTIAL OF COIR (COCONUT MESOCARP PITH) AS A PEAT SUBSTITUTE IN CONTAINER MEDIA.

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 452c-452 ◽  
Author(s):  
Alan W. Meerow
Keyword(s):  
Plant Growth ◽  
Growth Parameters ◽  
Cocos Nucifera ◽  
Waste Product ◽  
Wetland Ecosystems ◽  
Left Behind ◽  
Sphagnum Peat ◽  
Coir Pith ◽  
Ornamental Crops ◽  
Long Fibers

Coir is the name given to the fibrous material that constitutes the thick mesocarp of the coconut fruit (Cocos nucifera L.). The long fibers of coir are extracted from the coconut husk and utilized in the manufacture of various products. The short fibers and dust (“pith”) left behind have accumulated as a waste product. Coir pith is light to dark brown in color and consists primarily of particles in the size range 0.2-2.0 mm (75-90%). In composition, it is 65-70% lignin and 20-30% cellulose. To date, few replicated tests have assessed the performance of coir pith as a plant growth medium. From April, 1993 to April, 1994, four ornamental crops (pentas, ixora, anthurium and majesty palm) were grown in container media that differed only in the peat fraction (40%), either sphagnum, Florida (sedge) peat, or coir pith. On the basis of plant growth parameters, coir pith was superior to sedge peat as a medium component (though only marginally for the anthurium) and at least equal to sphagnum peat. In addition to physical qualities equal to or better than sphagnum peat, coir decomposes more slowly than either sedge or sphagnum peat, withstands compression better and is easier to wet than peat. There are also no ecological drawbacks to the use of coir -- a waste product -- relative to the harvest of peat from wetland ecosystems.

scholarly journals MOVEMENT OF SELECTED GROWTH-REGULATING CHEMICALS IN ARTIFICIAL GROWING MEDIA

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 633e-633
Author(s):  
Kurt A. Schekel ◽  
Paul S. Kaczmarczyk
Keyword(s):  
Growth Regulators ◽  
Distribution Patterns ◽  
Douglas Fir ◽  
Similar Distribution ◽  
Growing Media ◽  
Sphagnum Peat ◽  
The Media

The presence of the growth regulators paclobutrazol and uniconazole in leachate or distribution through media consisting of various proportions of Douglas fir bark, sphagnum peat and perlite was evaluated. Distribution through a column 25 cm deep occurred rapidly and growth regulators were found in the leachate the first day after drench application when perlite was in the mix. Movement was limited to a maximum of the top 60% of the column in bark and peat mixes without perlite. Leachate was collected daily over a 12 day period after drenches were applied. Paclobutrazol and uniconazol showed similar distribution patterns in the media.

scholarly journals Growth of Dieffenbachia maculata `Camille' in Growing Media Based on Spaghnum Peat or Coconut Coir Dust

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 583e-583
Author(s):  
Robert H. Stamps ◽  
Michael R. Evans
Keyword(s):  
Pore Space ◽  
Plant Root ◽  
Production Cycle ◽  
Greenhouse Production ◽  
Growing Media ◽  
Coir Dust ◽  
Saturated Media ◽  
Coconut Coir ◽  
C 50 ◽  
Water Holding

A comparison was made of Philippine coconut coir dust and Canadian spaghnum peat as components of three growing media for greenhouse production of Dieffenbachia maculata `Camille'. The soilless media were prepared using coir or peat in various amounts (by volume) combined with pine bark, vermiculite, and/or perlite (Media A–50% coir/peat: 25% vermiculite: 25% perlite; Media B–40% coir/peat: 30% vermiculite: 30% bark; Media C–50% coir/peat: 50% bark). Chemical and physical properties of the soils were determined at the beginning and the end of the five-month production cycle. Plant root and top growth and grades were determined at the end of the experiment. Initially, saturated media extracts from coir-containing media had elevated K, Cl, and soluble salts levels compared to peat-containing media; however, by the end of the experiment those levels were lower in coir- than in peat-based media. Water-filled pore space and water-holding capacities were generally higher and air-filled pore space lower in coir- than in peat-based media, probably due to differences in particle size distributions. There were no interaction effects on plant growth between growing media and coir versus peat. Plant root and top growth in Media A > Media B > Media C and plant top growth was greater in coir- than in peat-based media. Differences in growth could be due, in part, to differences in media water-holding capacities.

Identifying appropriate methodology to diagnose aeration limitations with large peat and bark particles in growing media

2010 ◽  
Vol 90 (3) ◽  
pp. 481-494 ◽  
Author(s):  
J. Caron ◽  
P. Morel ◽  
L -M. Rivière ◽  
G. Guillemain
Keyword(s):  
Plant Growth ◽  
Growth Parameters ◽  
Fragment Size ◽  
Gas Diffusion ◽  
Growing Media ◽  
Sphagnum Peat ◽  
Growth Performances ◽  
Relative Diffusivity ◽  
Average Size

Large-sized particles (coarse peat, bark or sawdust) are often added to growing media to improve substrate aeration properties (gas storage and exchange). Recent studies have shown that large fragments mixed with fines may create barriers that restrict gas diffusion or create competition for oxygen even if they improve air storage. An experiment was carried out to compare the growth performances of growing media containing large fragments and to assess their aeration status using different methods. Different mixes were made of a fine sphagnum peat (average size 2.4 mm) and a coarse (1-2, 2-4, 4-6, 6-10, and 10-20 mm particles) sphagnum peat or bark (2-4 and 10-20 mm). These substrates had different aeration properties and were used to grow Poinsettia and Impatiens ‘New Guinea’ in a greenhouse, resulting in differences in plant growth. The results show that air-filled porosity remained relatively unaffected by fragment size. Gas relative diffusivity differed significantly between treatments and was highest in the mix with the 2-4 mm particles and diminished rapidly as fragment size increased from 4 to 20 mm or decreased to 1-2 mm. Diffusivity was clearly lower in the bark/peat mixes but showed the same trend with coarse fragments. Root and shoot growth parameters were significantly and positively correlated to gas relative diffusivity. Moreover, the growth reduction observed in the bark/peat mixes relative to pure peat was most likely linked to limited gas exchange. Air-filled porosity assessments performed in situ (in the pot itself) or prior to potting, in cylinders, gave inconsistent results or were not significantly correlated to plant growth, indicating that aeration limitations are better diagnosed with gas diffusivity in growing media.Key words: Air-filled porosity, gas relative diffusivity, gas diffusion, peat substrates, bark, Euphorbia pulcherima, Impatiens (× novae-guinea)

Growth of Dracaena marginata and Spathiphyllum `Petite' in Spaghnum Peat and Coconut Coir Dust-based Growing Media

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 522e-522
Author(s):  
Robert H. Stamps ◽  
Michael R. Evans
Keyword(s):  
Plant Root ◽  
Cocos Nucifera ◽  
Growth Index ◽  
Growing Media ◽  
Medium Component ◽  
Coir Dust ◽  
Total Plant ◽  
Marketable Size ◽  
Top Mass ◽  
Medium Type

Dracaena marginata Lam. and Spathiphyllum `Petite' were grown in three greenhouse growing media made with Philippine coconut (Cocos nucifera L.) coir dust (CD) or Canadian sphagnum peat (SP). Three soilless media [Cornell, Hybrid, Univ. of Florida #2 (UF-2)] were prepared using CD or SP and pine bark (PB), vermiculite (V), and/or perlite (P) in the following ratios (percent by volume): Cornell = 50 CD or SP:25 V:25 P; Hybrid = 40 CD or SP:30 V:30 PB; UF-2 = 50 CD or SP:50 PB. When most of the plants of each genus were of marketable size, plant root and top masses and grades were determined as well as plant top growth indices. For dracaena, there were interactions between medium component (CD/SP) and medium type for everything except mass and grades of roots. For Cornell mix, plant top growth index and grades were higher for SP- (SPM) than the CD-containing medium (CDM). However, masses were not different due to component. For Hybrid mix, only top mass was affected (CDM 12%> SPM). For UF-2, top plant index and top and total plant masses were higher for CDM than SPM by 10, 19 and 15%, respectively. Overall, plant masses were the same for all three mixes containing CD; however, top plant index and grades were higher for the Hybrid and UF-2 mixes than for Cornell. Using SP, plants in Cornell and Hybrid mixes generally outperformed those in UF-2. For spathiphyllum, there were no interactions and medium component only affected root ratings (CDM > SPM). Plant top, root and total masses and root ratings were higher for Cornell and Hybrid than for UF-2.

scholarly journals Effects of Dolomite on Some Growth Parameters of Poly Bag Coconut (Cocos nucifera L.) Seedlings in an Ultisol

2019 ◽  
Vol 15 (1) ◽  
pp. 16-21
Author(s):  
P.E. Osayande ◽  
P.O. Oviasogie ◽  
B.E. Awanlemhen ◽  
D.O. Oseghe
Keyword(s):  
Growth Parameters ◽  
Cocos Nucifera ◽  
Cocos Nucifera L

scholarly journals Effect of different growing media on seed germination and seedling growth of jamun (Syzygium cumunii L. Skeels)

2021 ◽  
Vol 17 (AAEBSSD) ◽  
pp. 138-141
Author(s):  
P. Lepakshi ◽  
P. Vinaya Kumar Reddy
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Growth Parameters ◽  
Primary Root ◽  
Dry Weight ◽  
Growing Media ◽  
Root Shoot Ratio ◽  
Percent Germination ◽  
The Media ◽  
Number Of Leaves

The study entitled “Effect of different growing media on seed germination and seedling growth ofJamun (Syzygium cumunii L. Skeels)” was carried out at College of Horticulture, Dr. Y.S.R Horticultural University, Venkataramannagudem, West Godavari District, AndhraPradesh, during the year 2018-19.Jamun seeds were sown in media comprising of soil, cocopeat and vermicompost in different ratios, Among which the media comprising of Soil + cocopeat + vermicompost @ 1:1:1 has shown best results in germinationparameters like earlier initiation of germination(10.91 days), less days taken to 50 percent germination(14.5 days) , highest percent of germination at 15 and 30 DAS(48.37% and 98.14 % respectively). The growth parameters likemaximum plant height(96.33cm), more number of leaves(55.75), increased girth(7.58mm) and chlorophyll content, lengthiest primary root(25.82cm), more number of secondary roots per seedling(41.51), highest fresh and dry weight of the shoot(80.24 and 20.67g.) and root and good root: shoot ratio(0.28)at 150 days after sowing were observed in plants that were sown in media comprising of Soil + cocopeat + vermicompost @ 1:1:1.

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