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Topic: Propagation

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In the News (Sun 18 Aug 19)

 SULIS Maintenance - Propagation
Propagating by cuttings, division and layering will produce plants that are identical to the parent plant and is a good choice when trying to duplicate a cultivar or hybrid.
In addition to propagation by division, ferns develop from spores that are born in the spore case - the sporangium - located on the fronds of the fern.
Seedlings propagated indoors prior to being transplanted into the summer garden have often not been exposed to such conditions as direct sunlight, cool evenings, wind, low humidity, etc. Hardening a plant is a gradual method of exposing plants to varying temperatures (especially cooler temperatures), and increasing the amount of direct sunlight.
www.sustland.umn.edu /maint/propagation.html   (2685 words)

 Blueberry Propagation, Northwest Berry and Grape Information Network, Oregon State University   (Site not responding. Last check: 2007-11-06)
A vast majority of blueberry propagation is done by relatively few commercial growers because of investment and cost.
Most propagation is done with hardwood cuttings, as they are easier to handle and are less perishable than softwood cuttings.
Propagation beds should be located in full sun with a suitable well-drained medium.
berrygrape.oregonstate.edu /fruitgrowing/berrycrops/blueberry/propagat.htm   (1769 words)

In asexual propagation, the new plants are genetically exact copies or clones of a single parent plant.
Sexual propagation of plants involves the exchange of genetic material between parents to produce a new generation.
Propagation by seed is the most commonly known method of producing new plants.
www.hcs.ohio-state.edu /mg/manual/prop.htm   (3079 words)

 Propagation at opensource encyclopedia   (Site not responding. Last check: 2007-11-06)
In genetics, propagation is another term for the elongation part of transcription.
In agriculture and horticulture, propagation is the production of increased numbers of plants, by seeds, cuttings, grafting or other methods.
In religion, propagation is a term often used for winning new converts to the particular religion.
wiki.tatet.com /Propagation.html   (161 words)

 Propagation of succulent plants
Propagation of rare plants helps to make them more commonly found in collections, which should help to reduce pressure on wild populations.
As there is no genetic diversity among plants propagated from cuttings or by division, any desirable traits are preserved, but any faults such as susceptibility to disease are faithfully reproduced too.
Many species of succulent plant can be propagated from pieces cut from the stem of the plant with a sharp knife.
www.succulent-plant.com /propagation.html   (1301 words)

Propagation from seed is often used where heather is needed for restoration work or for such areas as golf courses.
Thus if propagation is under good control, the longest roots will appear close to the base of the cutting (but not around the edge of the wound, where the cutting was separated from the mother plant).
When propagation is not under control, often weak rooting will appear near or at the surface of the soil.
www.heathersociety.org.uk /propagation.html   (2939 words)

 AllRefer.com - propagation of plants (Botany, General) - Encyclopedia
propagation of plants is effected in nature chiefly sexually by the seed and the spore, less often by rhizomes and other methods (see reproduction).
Vegetative means include cutting, layering, grafting, tissue culture, and division of the roots (see perennial) and of the tubers (see potato).
Most farm and garden crops are propagated by seed, but some plants will not breed true from seed and must be propagated by various vegetative methods, depending on the type of plant.
reference.allrefer.com /encyclopedia/P/propagat.html   (217 words)

 Propagation Networks Acceptable Use Policy v9 8/17/2004
Propagation Networks Users are responsible for ensuring that they, their customers, and their respective agents and contractors abide by this policy.
Propagation Networks Users and Peers will be held responsible for all traffic either sent via their connection to Propagation Networks or sent elsewhere using support services provided via their connection to Propagation Networks.
If Propagation Networks receives repeat complaints indicating that a problem has not been resolved, Propagation Networks may block traffic to and from the IP address(es) or, in its sole discretion, to the User, Peer or downstream customer of either, involved in the UBE/UCE complaint until Propagation Networks is convinced that the problem is resolved.
www.propagation.net   (1032 words)

 Solar Terrestrial Activity Report
Propagation on long distance northeast-southwest paths is poor.
Trans Atlantic propagation conditions are normally monitored every night on 1470 kHz.
Propagation was mostly unchanged from the day before with lots of strong signals from North American stations throughout the MW band, from CBT on 540 to presumed WJCC (and another unidentified station) on 1700 kHz.
www.dxlc.com /solar   (605 words)

 Basics of Radio Wave Propagation
This propagation occurs most frequently during the summer months with a major node occurring during the summer, a minor node occurring during the winter, and "valleys" occurring around both equinoxes.
For propagation along the direction of the magnetic field, it is the mode in which the electric vector rotates in the same sense that an electron gyrates freely about the field.
For propagation along the direction of the magnetic field, it is the mode in which the electric vector rotates opposite to the direction of an electron gyrating freely about the field.
ecjones.org /propag.html   (16958 words)

 Propagation   (Site not responding. Last check: 2007-11-06)
Although tissue culture propagation holds great promise for the future, conventional propagation methods are still the most widely used today.
If another propagation medium is used and you can't see the roots, wait until you can see 2 sets of leaves.
Another popular method of propagation is from cuttings, an assexual method of reproduction.
www.allamericanhydro.com /workbook/propagation.html   (1900 words)

 Propagating House Plants; G77-337-A   (Site not responding. Last check: 2007-11-06)
Propagating house plants in the home is an inexpensive and enjoyable hobby.
House plants may be propagated asexually, in which all new plants will be identical, in most cases, to the parent plant, or sexually, where the new plants will not necessarily be identical to the parent plants.
Division is the quickest way to propagate plants which produce stems at their base.
ianrpubs.unl.edu /horticulture/g337.htm   (1402 words)

 Mango Propagation   (Site not responding. Last check: 2007-11-06)
Worldwide, most mangos are propagated from seed, but selected varieties are also propagated by grafting.
Although apomixis is an advantage with regard to producing true-to-type offspring from seed, it is not fool-proof because one of the polyembryonic seedlings may be sexual (not apomictic), and it cannot readily be distinguished from its apomictic siblings at the seedling stage.
Approach grafting is a common technique used to clone (vegetatively propagate) named cultivars of mango in order to guarantee that offspring will be identical to the parent tree.
instruct1.cit.cornell.edu /courses/hort400/mpts/mangprop.html   (392 words)

 VHF/UHF/Microwave Radio Propagation: A Primer for Digital Experimenters   (Site not responding. Last check: 2007-11-06)
The focus is on acquiring a feel for radio propagation, and pointing the way towards recognizing the alternatives that may exist and the instances in which experimentation may be fruitful.
Huygens showed that propagation occurs as follows: each point on a wavefront acts as a source of a secondary wavefront known as a wavelet, and a new wavefront is then built up from the combination of the contributions from all of the wavelets on the preceding wavefront.
Fortunately, there is also significant propagation by diffraction over the treetops, especially if you can get your antennas up near treetop level or keep them a good distance from the edge of the forest, so all is not lost if you live near a forest.
www.tapr.org /tapr/html/ve3jf.dcc97/ve3jf.dcc97.html   (10080 words)

 CATHOLIC ENCYCLOPEDIA: Society for the Propagation of the Faith
A meeting of the friends of the missions called by Father Inglesi was attended by twelve ecclesiastics and laymen, and on 3 May, 1822, the Society for the Propagation of the Faith was formally established.
The official organ of the society is the "Annals of the Propagation of the Faith", the first number of which appeared in France in 1822.
The Society for the Propagation of the Faith takes no part in selecting missionaries, appointing them to their field of work, or training them for it, and does not concern itself with the administration of the missions.
www.newadvent.org /cathen/12461a.htm   (1217 words)

 The Society for Growing Australian Plants   (Site not responding. Last check: 2007-11-06)
Commercial propagating nurseries generally use "bottom heat" to improve the success of both seed germination and the striking of cuttings.
With both cuttings and seedlings, the use of heating extends the period of active growth, enabling successful propagation to be carried out in the cooler parts of the year.
For the home propagator who produces only a small quantity of plants, the simplest method is to invest in one of the commercial, self-contained systems that can be obtained from larger nurseries.
farrer.riv.csu.edu.au /ASGAP/propagat.html   (730 words)

 Propagation - Encyclopedia.WorldSearch   (Site not responding. Last check: 2007-11-06)
All the information you could ever possibly want in order to propagate virtually any plant or tree or cactus or succulent that might be growing on said desert island is to be found somewhere...
Principles of Optics: Electromagnetic Theory of Propagation, Interference and Diffraction of Light (7th Edition)
Practical Woody Plant Propagation for Nursery Growers (Practical Woody Plant Propagation for Nursery Growers)
encyclopedia.worldsearch.com /propagation.htm   (226 words)

 DF5AI.NET - Amateur Radio Propagation Studies
The 2005 sporadic E season has in particular given another example of 144 MHz long distance propagation between the Canary Islands and central Europe which is analyed here (alternative examples of double hop Es in 2005 are still under investigation).
The longest distances, however, result from tropospheric radio propagation from Ireland and England towards the west coast of Africa breaking the IARU Region 1 tropo record which is very impressive.
Interpreting those QSOs by double hop sporadic E propagation, some sort of ground reflection must exist along the radiowaves' zigzag path between ground and the E region of the ionosphere.
www.df5ai.net   (1636 words)

 Plant Propagation by Leaf, Cane, and Root Cuttings: Instructions for the Home Gardener
Some, but not all, plants can be propagated from just a leaf or a section of a leaf.
Examples of plants that can be propagated in this manner include clematis, rhododendron, camellia, jade plant, rubber plant, devil’s ivy, grape ivy, dracaena, flberry, mahonia, and heart-leaf philodendron.
Examples of plants that can be propagated from root cuttings include raspberry, flberry, rose, trumpet vine, phlox, crabapple, fig, lilac, and sumac.
www.ces.ncsu.edu /hil/hil-8700.html   (853 words)

Fortunately, the propagations differ sufficiently from one another that by combining a little experience with the descriptions to follow, you should seldom have any difficulty assigning one definite propagation mode to each DX catch.
MS is for the pure DX'er; it's impossible to watch or listen to a program by this propagation, for it may last from a split second to a little more than a minute.
Of all ionospheric propagations, aurora is probably the one most observed on the high VHF band (but not UHF) as well as the low.
www.geocities.com /TelevisionCity/Lot/2941/info/propagation.html   (3453 words)

 Learn more about Propagation in the online encyclopedia.   (Site not responding. Last check: 2007-11-06)
Learn more about Propagation in the online encyclopedia.
In physics, propagation is the motion of waves through or along a medium.
Note: For electromagnetic waves, propagation may occur in a vacuum as well as in material media.
www.onlineencyclopedia.org /p/pr/propagation.html   (119 words)

 botanical.com - A Modern Herbal | Lilies - Herb Profile and Information
---Propagation---Lilies are propagated by means of division or offsets, which as such increase freely, but increase by seed and bulbscales are the more usual methods.
For those that do not produce seeds or offsets readily, propagation by bulb-scales is resorted to, each healthy scale being capable of producing a new bulb at its base.
The scales are pulled off and inserted in pans and boxes of sandy soil and stood in cold frames, when in about six months small bulbs are produced at the base of the scales.
www.botanical.com /botanical/mgmh/l/lilies21.html   (1670 words)

 RSGB - Society - Propagation Studies Committee   (Site not responding. Last check: 2007-11-06)
The Propagation Studies Committee stemmed from a suggestion made in 1957 by Dr Smith-Rose, then Director of the Radio research Station, Slough, and later to become a President of the RSGB, that a small committee should be formed to attempt to correlate radio amateur observations with 'auroral, ionospheric or meteorological conditions'.
Each member of the Committee is a specialist in at least one aspect of radio propagation and there are always several projects in hand, such as the work on VHF sporadic-E and on tropospheric propagation at 50 MHz currently under way.
The Committee also supports the monthly Six and Ten Report, which reports and analyses propagation at 28 and 50 MHz, with the particular aim of reporting, discussing and analysing propagation on those bands and encouraging their more informed use.
www.rsgb.org.uk /society/psc.htm   (309 words)

 Introduction to Propagation
Fortunately, the propagation modes differ sufficiently from one another that by combining a little experience with the descriptions to follow, you should seldom have any difficulty assigning one definite propagation mode to each DX catch.
Tropo is the other major form of DX propagation; as the name implies, it's dependent on conditions in the troposphere where weather takes place.
MS is the one mode of propagation that is somewhat predictable.
www.anarc.org /wtfda/propagation.htm   (3400 words)

 Simon Collings - Principles of Radio Propagation   (Site not responding. Last check: 2007-11-06)
Specialist receivers and aerial systems are needed for the extreme limits of the radio spectrum; issues raised by this kind of operation will not be explored here.
Like all electromagnetic radiation, radio is affected by the medium it propagates through.
The type of propagation that can be supported depends on the frequency and other circumstances.
www.scnt01426.pwp.blueyonder.co.uk /Articles/Propagation/Propagation.htm   (289 words)

 Hydroponic Propagation   (Site not responding. Last check: 2007-11-06)
Another method of propagation is cloning, or asexual propagation.
Stem cuttings from most types of plants can be rooted in seven to fourteen days, producing a plant which is an exact genetic duplication of the original, or "mother" plant.
Asexual propagation is an invaluable tool used for many commercial greenhouse crops, as well as for hobby gardens.
www.hydroponics.com /c-propagate.html   (597 words)

 vegetative propagation on Encyclopedia.com
The leaves of some plants produce buds at their edges, which develop in turn into miniature plants that fall off and take root.
The vegetative propagation of economically important and useful plants is now so widespread that most horticultural varieties are now only reproduced clonally, especially since many of them breed true from seed.
Link to the past: carrying on the methods, and results, of vegetative propagation.
www.encyclopedia.com /html/v1/vegetati.asp   (420 words)

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