
Late blight, copper dust, and topic maps
Posted July 12th, 2009 by shunting
I caught up with the late blight story (Reuters) a bit late — all the more embarrassing because I’d been shooting the breeze at the Community Garden with somebody from the University of Maine Co-Operative Extension Service (MPBN) a week ago, and they’d warned me that big box stores in the area had managed to infect tomato plants in their garden centers with late blight spores — and the rain and the cold had made conditions ideal for the spores to spread. (That’s A Bad Thing, since the Irish Potato Famine was caused by late blight.) Anyhow, I started googling, and after an hour or so came up with some good images (so I knew what to look for), solutions (like not just ripping the plants out, since that spreads the spores), and measures for prevention (copper dust).
Since late blight takes 3-5 days to kill a garden, immediate action was needed. So I went down to my local hardware store to buy some powerful and nasty copper spray (and not some weak tea dust, either, but the right stuff). They were out. I then spent the rest of the afternoon trundling about the area on our woefully inadequate public transportation system looking for it: Lowes, Wal-Mart, and even Aubochon (a small Maine chain) were all out. So I returned to the local hardware store, and picked up some Rotenone with 7% copper, and promptly dusted my tomato patch with it — staving off, hopefully, the spores.
Leaving aside the role of big box garden centers in creating the growers’ equivalent of in-hospital infection, there were a couple of market failures here:
1. You’d think that the big box stores, having recalled the infectious tomato plants, would have at least stocked the means to remedy the infection! But no — nothing on the shelves. Aubuchon at least was able to figure out what to special order, but the order would have taken at least a week to arrive, and late blight can do its work in 3-5 days. So, the big box stores lost a sale.
2. You’d think that my local hardware store, which has MPBN on the radio next to the cash register, would have ordered copper, anticipating a demand for it. The late blight problem was known to be in the area at least a week ago, at the Community Garden, but the copper solution wasn’t in the area when and where I needed it. Now, that store didn’t lose a sale, but making customers buy a product known to be inferior is not a recipe for sustained growth.
In addition, there’s a larger failure to invest in what has been termed social capital:
I was able to broadcast my search results to a wider audience through blog posting and mail, but just as in a broadcast, I couldn’t be sure who got the message. Moreover, anybody who did get the message would have found it difficult to re-broadcast enhancements back to “my” audience. The model is wrong: I don’t really want to broadcast to an audience. I want to have a conversation with a community, so we can all refine our understanding and take action together. Not only that, I want a community that answers the question “Who then is my neighbor?” (Luke 10:29) not through mere physical proximity, or even digital proximity on this or that stovepiped site, but because (at least) we have subjects of mutual interest in common. What I want, in fact, is a socially networked topic map. What does that mean and how would it work? Click to read more »
Polysemy
Posted January 28th, 2010 by shunting
News flash: People love polysemous languages. Click to read more »
D7 hack to disable overlay
Posted January 3rd, 2010 by shunting
I'm sure the right thing to do is create a new profile, but right now I'm tired of making the first thing I do after an install disabling overlay. So:
1. Go into ... profiles/default/default.info
2. Comment out this line:
dependencies[] = overlay
thus
; dependencies[] = overlay
No more obtrusive overlay.
Drop all tables from PostgreSQL DB without superuser
Posted January 1st, 2010 by shunting
Via:
c.relname || ' CASCADE;' FROM pg_catalog.pg_class AS c LEFT JOIN
pg_catalog.pg_namespace AS n ON n.oid = c.relnamespace WHERE relkind =
'r' AND n.nspname NOT IN ('pg_catalog', 'pg_toast') AND
pg_catalog.pg_table_is_visible(c.oid)" >/tmp/droptables
psql -d my_dbname -f /tmp/droptables
Awesome.
Web3D
Posted December 11th, 2009 by shunting
Interesting. Dunno about this plug-in thing, though. Where's the JQuery?

