was What's germinating this week. now pest control: Physan

ds429@comcast.net ds429@comcast.net
Thu, 29 Dec 2011 14:46:39 PST

I have started experimenting with Physan to eliminate fungus and algae growth on the soil surfaces of potted plants. I originally started using it to prevent algae in the reservoirs of my wick-watered gesneriads, for whic h it is very effective. Accor ding to the manufacturer's claims, it will kill anything bad and nothing good. Does anyone have any experience with Physan  - particularly as an anti-dampoff agent? 


----- Original Message -----

From: "clayton3120 clayton3120" <clayton3120@cablespeed.com> 
To: "Pacific Bulb Society" <pbs@lists.ibiblio.org> 
Sent: Thursday, December 29, 2011 5:13:45 PM 
Subject: Re: [pbs] What's germinating this week. 

Good Afternoon, Seed Sowers. 
This is great with all the trial info coming in. 
Today I received an order of   Irisseed, mostly Junos,   Anemone species, 
etc. etc. 
I will take half the batch of each and use the GA3 treatment, and the 
refrigerated seed in slightly moist medium.    It will be a while before I 
can post results. 
As i write this, here is a little report on Ga3 treated seed. 
Lilium  candidum  seed , sown  11/29/11, Ga3 treatment 250 ppm, planted in 
seed mix, and placed in coldframe,     10 seedlings emerged so far. 
Fritillaria spefsiotica , sown 10/27/11, Ga3 treatment 300ppm, planted in 
seed mix, 13 seedlings emerged so far. 
Narcissus rupicola ssp. rupicola, sown 10/27/11, Ga3 treatment 300 ppm, 
planted in seed mix, 
12 seedlings emerged. 
etc etc 

A great continuing topic would be  damping off cultural practices, 
Has anyone used 'Rootshield'  for an extended period? 
Rick K 

On Wed, Dec 28, 2011 at 11:22 PM, Lee Poulsen <wpoulsen@pacbell.net> wrote: 

> With all the talk of Deno's research as well as the use of gibberellic 
> acid in getting seeds to germinate, I have to report that the method Diana 
> of Telos Rare Bulbs uses to germinate seeds from the two American 
> hemisphere mediterranean regions (Chile and California) has produced 
> amazing results for me this autumn. In the past, I've always just sown 
> seeds from both of these locations directly in 10-cm pots in the autumn and 
> other than watering them, I would just leave them outside to experience the 
> fluctuating autumn temperatures and sporadic rainfall that occurs here in 
> southern California naturally (since this is a mediterranean region in the 
> Western Hemisphere). I always get decent germination for most species, but 
> some species have never germinated for me. I would always attribute it to 
> their being from regions more poleward than where I live, and therefore 
> more chilly, or from regions at much higher altitudes than my location, or 
> even from regions more desert-y than my location. 
> Regardless, in her blog, Diana mentioned that for seeds from California or 
> Chile, she puts them in slightly moist vermiculite in sealed baggies in the 
> autumn and then places them all in a refrigerator. She then checks all the 
> bags on a regular basis for germination, and as they germinate, she takes 
> them out of the fridge and plants them in her regular seedling mix. 
> For me the process is still underway, so I don't know the final result, 
> but so far, the results have been overwhelming to me, both in the species 
> that have finally germinated for me, as well as in the numbers of seeds 
> that germinate. I've finally gotten Rhodophiala rhodolirion, both pink and 
> white versions to germinate, and they germinated almost as quickly as the 
> low elevation species did--about 2 weeks in the fridge. Also, the 
> Calochortus seeds from the first round that came from the BX have 
> germinated (I believe some of them were the old seeds from Nhu that Michael 
> Mace referred to). And then to my most pleasant surprise, several species 
> of Chilean seeds that I got in May of 2010 and was unable to sow that 
> autumn due to excessive business travel, have all germinated including 
> seeds that I didn't think would be viable that long. 
> It's a little more trouble to plant germinated seeds, but well worth the 
> increased germination rate. (Another example is Tropaeolum azureum: I've 
> always gotten maybe 1 or 2, never more than 3, seeds out of every 10 that 
> I've planted to germinate in the past. This time, 8 or 9 out of 10 seeds 
> germinated and I was completely unprepared for that. I purchased more of 
> this to try this year since I was unable to plant the seeds I bought a year 
> and a half ago. But the old seeds germinated in almost the same numbers, so 
> now I have two full pots of this growing!) 
> I think I'm sold on this method now. 
> --Lee Poulsen 
> Pasadena, California, USA - USDA Zone 10a 
> Latitude 34°N, Altitude 1150 ft/350 m 
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