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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comI use 12 gal. containers in a greenhouse 17 x 20′ screened sides, glass roof, 50% opened. Center 5′ glassed year round. I read about spraying copper sulfate on the soil, letting it dry then watering it in to kill blight spores. I have blight. Should I remove all tomato plant roots? How strong of a solution should I use? I have a small 1 qt boiler I could attach to a 3/8″ rod with holes and could push it into the soil and force the steam into the soil. How far apart would the penetrations have to be and how long would I leave the rod at each location to kill the spores? This seems very labor intensive.
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URLs in this post:
[1] https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/copper-for-the-garden.htm: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/copper-for-the-garden.htm
[2] http://www.copper.org/resources/properties/compounds/copper_sulfate02.html: http://www.copper.org/resources/properties/compounds/copper_sulfate02.html
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1 Comment To "How Much Copper Sulfate to Kill Blight Spores"
#1 Comment By Downtoearthdigs On 05/17/2016 @ 9:34 am
Injecting into the soil would be beyond my expertise.
Here are some links with more information.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/copper-for-the-garden.htm [1]
http://www.copper.org/resources/properties/compounds/copper_sulfate02.html [2]