Is this little thing really what's destroyed my gardens?

[z_willus_d]

You're right Ivan, I did a bit more research, and I screwed up the CuPro portions. Cu Hydroxide has a density of 3.37g/cm3. There are ~237cm3 in a cup and the CuPro product is 61.3% Cu Hydroxide, so I actually applied 3.37g/cm3 * 237cm3 * 0.613 = ~489g of Cu Hydroxide, nearly 5 times too much.

Here's what I'm thinking I'll do to remedy the mistake. I will dump the current 4-gal of product into a larger 18-gal tub. I will add another 3*4-gal of water. Mix. I will add another 3*5TBS (leveled, more or less) of Dithane M-45. Mix, mix, mix. This evening, I'll use ~4-gal of this mixture to drench my experiment site. I will then clear out another large area in the bed for growing broccoli. I will drench this new site as well, with the intention of applying our general experimental procedure for these broccoli plants.

I generally grow broccoli/cauliflower/brassica in the tomato beds during the off-season (Fall-Winter-early Spring), and they seem affected by the same issue, with leaves turning yellow and dropping. It would be good to see if this experiment process will be successful (more or less is fine) in helping the broccoli as well as the tomato vines. I usually start the brassica from seed, but I've fallen behind this year. I hope I can find suitable varieties at the local nursery as well as the tomato seedlings. I'll aim to get these plants some time this week.

Alright, that's the plan to remedy and extend the experiment.

Thanks for catching my error.
-naysen