a talk with a farmer, LB cure

amideutch · August 29, 2009

Unless the land you are growing your tomatoes on has been used for agriculture for a long time I wouldn't worry about soil contamination. Normally copper becomes fixed in the first 6 to 8 inches of soil so it leaching into the aquifers is rare. As the copper is used as a foliar for antifungal applications I wouldn't worry to much as long as you follow the application rates. Bonide Copper Fungicide has a copper equivalent of 1.8%. So with the application rate is 0.5-2.0 fluid ounces per gallon of water the copper content is quite low when applied to the plant and what ever is absorbed by the soil.
Fact: One of the first chemical sprays used to kill weeds was a 5 percent solution of copper sulfate. Ami

August 29, 2009	#1
amideutch Tomatovillian™ Join Date: Feb 2006 Location: Germany 49°26"N 07°36"E Posts: 5,041	Unless the land you are growing your tomatoes on has been used for agriculture for a long time I wouldn't worry about soil contamination. Normally copper becomes fixed in the first 6 to 8 inches of soil so it leaching into the aquifers is rare. As the copper is used as a foliar for antifungal applications I wouldn't worry to much as long as you follow the application rates. Bonide Copper Fungicide has a copper equivalent of 1.8%. So with the application rate is 0.5-2.0 fluid ounces per gallon of water the copper content is quite low when applied to the plant and what ever is absorbed by the soil. Fact: One of the first chemical sprays used to kill weeds was a 5 percent solution of copper sulfate. Ami __________________ Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘...Holy Crap .....What a ride!'