Here is some good information on scale: http://www.ipm.ucdavis.edu/PMG/r280301211.html http://nathist.sdstate.edu/orchids/pests/scales.htm http://edis.ifas.ufl.edu/IG007#TABLE_6
-Will ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <orchids@orchidguide.com> Sent: Wednesday, May 23, 2007 6:00 AM Subject: Orchids Digest, Vol 9, Issue 174 > Send Orchids mailing list submissions to > orchids@orchidguide.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com > or, via email, send a message with subject or body 'help' to > [EMAIL PROTECTED] > > You can reach the person managing the list at > [EMAIL PROTECTED] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Orchids digest..." > > > Today's Topics: > > 1. Re: scale on cattleyas (Errol Porter) > 2. Re: scale on cattleyas (Denise Nash) > 3. Re: scale on cattleyas (Errol Porter) > 4. Re: Sevin (John J. Rupp) > 5. Podochilus muricatus ([EMAIL PROTECTED]) > 6. Light Meter ([EMAIL PROTECTED]) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 22 May 2007 07:38:10 -0400 > From: Errol Porter <[EMAIL PROTECTED]> > Subject: Re: [OGD] scale on cattleyas > To: "the OrchidGuide Digest \(OGD\)" <orchids@orchidguide.com> > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="us-ascii"; format=flowed > > Why use Sevin, in my opinion all these chemicals are potentially dangerous > to people, pets, etc, when you can use rubbing alcohol to control scale, > mealy bugs etc, rubbing alcohol being quite safe. > > Errol > > > At 12:25 AM 5/22/2007, you wrote: > >Has anyone used Sevin (=carbaryl) on Cattleyas and relatives? Safely? > > > > John Waddington > > > > > ------------------------------ > > Message: 2 > Date: Tue, 22 May 2007 08:46:06 -0400 > From: Denise Nash <[EMAIL PROTECTED]> > Subject: Re: [OGD] scale on cattleyas > To: "the OrchidGuide Digest (OGD)" <orchids@orchidguide.com> > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi Errol - > > Rubbing Alcohol is good if you have a small collection in the house. If > you have a rather large collection in a greenhouse, you need a different > solution because alcohol doesn't kill the adult scale unless they are > scrubbed with a toothbrush. This is the time of year I start > experiencing scale in the greenhouse. I try to stay on top of the > problem by inspecting as much as I can. I found a cattleya just > yesterday that had boisduval scale. > > I am wondering what you all do about boisduval scale. The other scale > seems fairly easy to eradicate. Boisduval scale seems to be drawn to > certain plants (especially fragrant cattleyas in my collection), and > once the plant has it, it will have scale again and again, no matter how > often you inspect or scrub the plant. I have gotten into the habit of > throwing plants out unless it's one that I truly LOVE. > > If anyone has any suggestions, I would love to hear them. > > Denise Nash, near Ann Arbor, Michigan > > Errol Porter wrote: > > >Why use Sevin, in my opinion all these chemicals are potentially dangerous > >to people, pets, etc, when you can use rubbing alcohol to control scale, > >mealy bugs etc, rubbing alcohol being quite safe. > > > >Errol > > > > > >At 12:25 AM 5/22/2007, you wrote: > > > > > >>Has anyone used Sevin (=carbaryl) on Cattleyas and relatives? Safely? > >> > >> John Waddington > >> > > > > > > ------------------------------ > > Message: 3 > Date: Tue, 22 May 2007 09:05:10 -0400 > From: Errol Porter <[EMAIL PROTECTED]> > Subject: Re: [OGD] scale on cattleyas > To: "the OrchidGuide Digest \(OGD\)" <orchids@orchidguide.com> > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="us-ascii"; format=flowed > > I have used rubbing alcohol for several years, with about 200 plants (most > never get scale). I don't scrub with a brush, just spray on, but to break > the life-cycle, spray a few times over a 15-20 day period. I find mealy > bugs worse than scale and rubbing alcohol works well for that as > well. Sometimes mix a little insecticidal soap with the alcohol. > > Errol > Toronto > > At 08:46 AM 5/22/2007, you wrote: > >Hi Errol - > > > >Rubbing Alcohol is good if you have a small collection in the house. If > >you have a rather large collection in a greenhouse, you need a different > >solution because alcohol doesn't kill the adult scale unless they are > >scrubbed with a toothbrush. This is the time of year I start > >experiencing scale in the greenhouse. I try to stay on top of the > >problem by inspecting as much as I can. I found a cattleya just > >yesterday that had boisduval scale. > > > >I am wondering what you all do about boisduval scale. The other scale > >seems fairly easy to eradicate. Boisduval scale seems to be drawn to > >certain plants (especially fragrant cattleyas in my collection), and > >once the plant has it, it will have scale again and again, no matter how > >often you inspect or scrub the plant. I have gotten into the habit of > >throwing plants out unless it's one that I truly LOVE. > > > >If anyone has any suggestions, I would love to hear them. > > > >Denise Nash, near Ann Arbor, Michigan > > > >Errol Porter wrote: > > > > >Why use Sevin, in my opinion all these chemicals are potentially dangerous > > >to people, pets, etc, when you can use rubbing alcohol to control scale, > > >mealy bugs etc, rubbing alcohol being quite safe. > > > > > >Errol > > > > > > > > >At 12:25 AM 5/22/2007, you wrote: > > > > > > > > >>Has anyone used Sevin (=carbaryl) on Cattleyas and relatives? Safely? > > >> > > >> John Waddington > > >> > > > > > > > >_______________________________________________ > >the OrchidGuide Digest (OGD) > >orchids@orchidguide.com > >http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com > > > > > ------------------------------ > > Message: 4 > Date: Tue, 22 May 2007 13:01:19 -0500 > From: "John J. Rupp" <[EMAIL PROTECTED]> > Subject: Re: [OGD] Sevin > To: orchids@orchidguide.com > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Yes , I have used Sevin as a spray and as a pot drench on all varieties > of orchids; catts, phals, paphs, oncidium, etc. and have had no damage > to the plants or flowers. The only damage was to the nasties; mealybugs > and scale. > > John R > > Has anyone used Sevin (=carbaryl) on Cattleyas and relatives? Safely? > > > > John Waddington > > > > > > ------------------------------ > > Message: 5 > Date: Tue, 22 May 2007 14:06:57 EDT > From: [EMAIL PROTECTED] > Subject: [OGD] Podochilus muricatus > To: orchids@orchidguide.com > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="UTF-8" > > This was purchased at Redlands from All Asian Orchids. The only info I can > find on it is Podochilus muricatus (Teijsm. & Binn.) Schltr. ? Appendicula > muricata Teijsm. & Binn. Does anyone have any more info on this species? I > assume it is a warm to hot grower but otherwise I don't know how to culture it. > > Thanks Ron > > > > ************************************** See what's free at http://www.aol.com. > > > ------------------------------ > > Message: 6 > Date: Wed, 23 May 2007 01:42:35 EDT > From: [EMAIL PROTECTED] > Subject: [OGD] Light Meter > To: orchids@orchidguide.com > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="US-ASCII" > > Many thanks to all who responded here or by email to my request for > information on the use of a Weston Master III light meter to determine the light > intensity in foot-candles shining on plants in a greenhouse. All of you gave > good information on using camera light meters, but special thanks to Viateur who > knew the unique simplicity of the Weston meter in making the determination. > The Weston meter reads a numeric value that he understood requires only that > you take a reading from a white sheet of paper held over the plants and then > multiply the reading by four(4) for an approximation of the intensity of the > light reaching the plants in foot-candles. This eliminates the need for > setting the ASA film speed, determining the shutter speed and f/stop, and then > using a chart as is required with most camera light meters. Deep in my > memory, I thought the multiplying factor was four but I was uncertain. I have been > slow to reply as I have been out of town. Thanks again Viateur. > > > > ************************************** See what's free at http://www.aol.com. > > > ------------------------------ > > _______________________________________________ > the OrchidGuide Digest (OGD) > orchids@orchidguide.com > http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com > > > End of Orchids Digest, Vol 9, Issue 174 > *************************************** _______________________________________________ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
