A quick word about surfactants and aspirin...
First off I would never do a foliar without a surfactant. That would just be a waste of time and material. Here's why..
There are many different wetting agents used through out the world, from regular everyday dishsoap, to agricultural oil, to diesel fuel. I worked for an agriculture company when I was younger and sprayed diesel fuel on many things (i.e. ivy, poison oak, etc.). Look on any local pest truck and you will find a bottle of dishsoap. Most pest companies use it
in every mix. Not only will dishsoap help chemicals stick to the waxy exoskeleton of insects, but it also has it's own unique pesticidal qualities.
Not all surfactants (an acronym for
'surface-something?-agents. I don't recall the middle word
. Sorry.) are appropriate for use on mj. Mj leaves, like most plants, have a waxy coating. Some more than others. This offers a natural protection against environmental threats and too much moisture loss. You may have seen some mj plants leaves are much waxier than others. Dark green shiny leaves of some strains would be a perfect example. You can see the waxy coating at work simply by spraying water on the leaf and watching it bead up and roll off. A surfactant eliminates this problem. It cuts the surface tension of water and basically makes water
wetter. This is also important to the soil farmer. When soils become dry, they can aquire a condition known as hydroresistance. This means that no matter how much water you throw at it, it beads up, rolls off and remains dry. A wetting agent will ensure that a hydroresistant soil accepts water (and nutrients) much easier.
I would personally be very careful of what I used on my mj. I have read that most people prefer dish soap. I have also read that you should only use certain brands (i.e. Dove or ivory). I use a natural product from Earth Juice called Assist. I use it a lot! I know this is safe. It is made specifically for.... Yeah.
Anyway, a bit about aspirin. I finally found the uncoated today at the Canned Food Outlet. I did a little experiment with it when I got home. Here is what I have learned so far...
I tried two methods of incorporation. Letting the aspirin dissovle on its own accord, and pre-grinding. One thing I noticed right off the bat is the dissolved apirin was chunky. Kind of like... Coagulated. It wouldn't mix thoroughly in solution with the water. The pre ground went much better but had a tendancy to collect into 'balls' that were impossible to break up. There was a lot of material that just floated around. I solved this by adding a drop of dish soap (a wetting agent, what else??) It helped a bit with the dissolved aspirin, but not totally. It totally helped with the pre-ground. Full incorporation into solution. At least what I could see
So I think a wetting agent is a must, even for root feeding.
I will be experimenting with this more and if I find anything else of interest I will share, of course.