Which references,https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3550375/. The full .pdf can be downloaded.A protocol has also been developed for the propagation of hemp via the synthetic seed technology. According to this procedure, axillary buds or nodal segments are encapsulated in calcium alginate beads (Lata et al., 2009b, 2011), which can then be stored and subsequently used for clonal propagation of the plant. This system was shown to allow the successful growth of homogeneous and genetically stable Cannabis plants even after 6 months of storage (Lata et al., 2011).
Axillary buds of Cannabis sativa isolated from aseptic multiple shoot cultures were successfully encapsulated in calcium alginate beads. The best gel complexation was achieved using 5 % sodium alginate with 50 mM CaCl2.2H2O. Regrowth and conversion after encapsulation was evaluated both under in vitro and in vivo conditions on different planting substrates. The addition of antimicrobial substance — Plant Preservative Mixture (PPM) had a positive effect on overall plantlet development. Encapsulated explants exhibited the best regrowth and conversion frequency on Murashige and Skoog medium supplemented with thidiazuron (TDZ 0.5 μM) and PPM (0.075 %) under in vitro conditions. Under in vivo conditions, 100 % conversion of encapsulated explants was obtained on 1:1 potting mix- fertilome with coco natural growth medium, moistened with full strength MS medium without TDZ, supplemented with 3 % sucrose and 0.5 % PPM.
Encapsulation Matrix:
Sodium alginate was added in the range of 2-6 % (w/v) to full strength Murashigeand Skoog’s medium (MS) with or without 3 % sucrose. The solutions were supplemented with 0.5 μM Thidiazuron (TDZ) and 2.5 μM indole-3-butyric acid(IBA). A broad spectrum fungicide, Plant preservative mixture (PPM) in a range of 0.3-0.5 % was added to the gel matrix for in vivo experiments. For complexation, different concentrations (25-100 mM) of complexing agent (CaCl2.2H2O) were prepared in liquid MS medium containing the same adjuvents as the sodium alginate matrix but excluding the PPM. Both the solutions were autoclaved separately for 15 min at a pressure of 1.1 kg cm-2 and temperature of 121 ºC after adjusting the pH to 5.8.
Formation of beads:
The beads were formed by dropping explants mixed with sodium alginate solution
into CaCl2.2H2O in a flask, placed on an orbital shaker at 80 rpm. The resulting beads (0.5-0.8 cm in diameter)containing the entrapped nodal segments were left in the calcium chloride solution for 30 min for complexation. These were retrieved using a nylon mesh and the traces of calcium chloride was removed by washing with sterilized distilled water.
Part of designing a soil media is paying attention to the details and modifying your substrate so you don't have to compromise on best care techniques. The media has to work with your style of growing.
Remember, at some point in this thread I said I was altering my basic potting media mix to work better in a long term bed setting vs being in rotational cycles with containers. I know I posted what was being used in it's entirety, but I didn't compare/contrast the difference. So I'll go ahead and do that, as it is a perfect example of what I mean in the quote above.
Mix Posted in the Stank Bros sticky:
A. 3 gal dirt / earth / topsoil / nursery soil (unfertilized)
B. 1.5 gal coir
C. 2.5 gal peat
D. 3 gal aeration (chunky perlite, lava rock, permatil, etc.)
E. 1 gal EWC
------
11 gallons
Modified Bed Mix:
A. 3.5 gal compost
B. 1.25 gal coir
C. 2 gal peat
E. .5 gal EWC
E. .5 gal Black Kow
D. .5 gal vermiculite
D. .5 gal permatil
D. 1 gal perlite
-------
9.75 gallons
So to be fair, we'll look at percentages of components:
A = 27.3% vs 35.9% = + 8.6% compost
B = 13.6% vs 12.8% = - 0.8% coir
C = 22.7% vs 20.5% = -2.2% peat
D = 27.3% vs 20.5% = -6.8% aeration
E = 9.1% vs 10.3% = +1.2% humic substances
You have to make the media work for you in your given situation. Adapt it to fit your growing style and personal performance preferences and demands. Those slight little differences make it feel like an entirely different media, to be honest.
dank.Frank