Other than red spots and leaf damage, what damage does Stagnospora curtisii do to bulbs? Dell -------------------------------------------- On Sun, 10/19/14, Peter Taggart <petersirises@gmail.com> wrote: Subject: Re: [pbs] Reds spots on pancratium To: "Pacific Bulb Society" <pbs@lists.ibiblio.org> Date: Sunday, October 19, 2014, 4:07 PM It happens when the bulbs are not warm enough, (or dormant), and therefor not using as much water as they have in the compost. I find that chemicals are not needed, improved conditions allow the bulb to heal. The first thing to do is get the compost drier, and make sure that it has plenty of air content. Then wait until the bulb tries to grow and needs water. Also, ensure that temperatures are adequate for the species in question. I believe that mites can exacerbate the problem. Peter (UK) On 13 October 2014 03:08, <dr.mas.roberts@gmail.com> wrote: > This disease is caused by Stagonospora curtisii. I have not been > consistently successful in curing bulbs. You can try heat baths 104-114oF > 30 minutes. Thyophanate methyl ( I haven't tried other fungicides) seems to > work best when applied after removing leaves in the fall, wetting the top > of the bulb completely or dipping the bulb in fungicide as it goes into > dormancy and again during dry storage and again as the bulb breaks dormancy > as the bud emerges. Cool damp storage or spring weather seems to spread or > exacerbate the symptoms. > > On Oct 11, 2014, at 11:26 AM, Rimmer deVries <rdevries@comcast.net> > wrote: > > > > Does any know what these red spots are? Is this a virus or ? > > > > They show up on almost all amaryllis type bulbs sourced from Holland. > > > > http://flic.kr/p/pA243j/ > > > _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/