Skip to Content.
Sympa Menu

nafex - [nafex] Captan - Chemical Halflife

nafex@lists.ibiblio.org

Subject: North American Fruit Explorers mailing list at ibiblio

List archive

Chronological Thread  
  • From: Tom Olenio <tolenio@sentex.net>
  • To: nafex@yahoogroups.com
  • Subject: [nafex] Captan - Chemical Halflife
  • Date: Fri, 16 Feb 2001 16:28:28 -0500

Hello All,

I know some of you have little use for chemicals, but I want to share something I just learned with other novice chemical users.

Not too long ago I carefully measured out a gallon of water, and the proper amount of captan to make up a gallon of fungicide for spraying on cuttings.  (Took all the necessary precautions).

What I just learned today is the half life (time it is effective) of captan in water is 2.5 days.  Malathion is shorter, just 1 day.

Not knowing this, I have sprayed a lot of useless chemicals in the past few years.  Not using a lot of spray at any one time, I would save the extra in carefully capped bottles, and use it the next time.  Boy do I feel sheepish.

Here is a web page that contains the half life of some selected chemicals;

http://wizard.arsusda.gov/acsl/ppdb3.html

So I guess the lesson is that being frugal does not always work.
 

Regards,
Tom
--
Thomas Olenio
Ontario, Canada
Hardiness Zone 6a
 

Yahoo! Groups Sponsor

www.   


  • [nafex] Captan - Chemical Halflife, Tom Olenio, 02/16/2001

Archive powered by MHonArc 2.6.24.

Top of Page