Vern and Amy
vaspencer at sisna.com
Fri Feb 17 00:54:07 EST 2012
I will look for an old container of Rootshield to see if it is also
labeled for potatoes. It may be a slightly different strain, but that
may not make a difference, because it is just colonizing the plant
before the bad stuff does. T-22 also purports to help all seeds be more
productive. There may be some studies available online.
David Ronniger, a former seed potato grower who introduced German
Butterball to the U.S, turned me onto T-22. I have low pH (5.5) and put
the spuds in new ground every year, so I don't know how much is due to
the T-22 and how much is cultural practice and pH, but they keep coming
out beautiful--not spotless, but better than I have seen some seed.
I'm not very technical. Last year I dumped some T-22 in a bin of water
and sloshed a mesh sack of seed potatoes in it. The year before, I dug
rills, had the kids drop the spuds in and I sprayed the potatoes
walking at a good clip before covering them with the tractor. Ronniger
dusts them in a machine before planting.
Hope this helps.
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