http://www.surialink.com/HANDBOOK/Production/browns_country.htm
http://scholar.lib.vt.edu/theses/available/etd-8597-161835/unrestricted/dis=
s
ert.pdf
Sources:
http://www.surialink.com/communities/AgriAqua_AA/aa_link.asp
It seems from most of the research I found today that the key is "brown"
seaweeds as they contain similar components.
http://www.fao.org/documents/show_cdr.asp?url_file=/DOCREP/006/Y4765E/y47=
65e
0c.htm
Seaweed extracts
Seaweed extracts (SE) and seaweed have been used as fertilizers and soil
conditioners for
centuries (Aitken and Senn, 1965; Crouch, 1990). Seaweed extracts contain
not only most of the
major and minor nutrients, amino acids, and vitamins B1, B2, C, E, but also
cytokinins, auxin, GAs,
and ABA-like growth substances (Abetz, 1980; Finnie and Van Staden, 1985;
Munda and
Gubensek, 1975; Moor and Van Staden, 1986; Stephenson, 1968).
Initially, enhanced plant growth with seaweed application was attributed to
its soil
conditioning properties. Later, it was showed that increased trace element
supply could explain only
some of the beneficial effects of seaweed (Francki, 1960 ). Low rates of
seaweed extract could
also promote plant growth significantly (Crouch, 1992, 1993). Thereafter, i=
t
was suggested that
organic compounds, rather than mineral elements, were responsible for
improved growth (Brain et
al., 1973; Blunden, 1977; Crouch, 1993; Finnie et al., 1985). In recent
years, it has been
demonstrated that seaweed products contain phytohormones, and the
stimulating effects of seaweed
extracts may be attributed to these components, especially cytokinins.
Seaweed extracts exhibit various benificial effects on plant growth and
development (Crouch,
1990; Crouch et al., 1990). They may enhance nutrient uptake, regulate plan=
t
growth substances,
increase chlorophyll content, protein synthesis and cell division, promote
root and shoot growth and
improve seed gemination (Beckett et al., 1990; Button and Noyes, 1964; Van
Staden et al., 1994;
Yan, 1993).
Seaweed extracts have been used as a cytokinin-like growth regulator and
exhibit multiple
functions in turf management (Schmidt, 1990). When applied to plants, SE
stimulates shoot growth
and branching (Temple and Bomke, 1989), increase root growth and lateral
root development
(Metting et al., 1990), improve nutrient uptake (Yan , 1993), enhance
resistance to diseases ( Featan
by-Smith et al., 1983) and environmental stresses such as drought and
salinity (Nabati, 1991; Nabati
et al., 1994). It has been observed that cytokinin or cytokinin-like growth
regulators can inhibit the
activity of free radical groups, hydrogen peroxide, and superoxide, which
are the major elements for
chlorophyll degradation during senescence (Sexton and Woulhouse, 1984).
Under drought stress,
they may replace endogenous cytokinin whose production is reduced by stress
conditions (Fletcher
et al, 1988). It has been indicated that a range of naturally occurring and
synthetic cytokinins can
enhance stomatal aperture, transpiration, and the protein
(polysomes/ribosomes) associated with
-----Original Message-----
From: Jeff Lowenfels [mailto:jeff_at_gardener.com]
Sent: Saturday, October 23, 2004 1:15 PM
To: compost_tea_at_yahoogroups.com
Subject: Re: [compost_tea] Re: Kelp
Just your friendly moderator here. This is a good topic for those who
want to go for more fungally dominated teas.
Ascophyllum nodosum is the kelp most use for tea. For some reason it
provides a terrific surface for fungal attachment and subsequent
growth. Perhaps Doc E can either correct or help us with why this
particular Kelp is the kelp of choice with most ACT brewers seeking
fungal teas.
Kelp meal, incidently, seems to work as well judging from some of the
posts this summer. It sure is a lot cheaper. Anyone care to comment on
kelp meal vs kelp powder and Ascophyllum nodosum vs other kelps?
Cheers,
Jeff L
www.alaskahumus.com
Plant a Row in your garden to feed the hungry. Join Plant A Row for the
Hungry. Ask me how. www.gwaa.org/Par/index.html
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Received on Sat Oct 23 2004 - 19:48:36 EDT