Cannot locate any information on that product in English. It is unknown in the US. It would appear from what I can translate that it is meant for use in hydroponic growing, not soil, but that is just a guess on my part.

The most logical explanation is that it is that product that is in some way the source of your problems.

Dave

Maybe the Oxydez is not meant to be applied to the leaves, although it might be ok for the roots?

I would try again and not use the Oxydez at all!

Linda

Try not using Oxydez at all!

Looks like some kind of poisoning. I also suspect that Oxydez. When I look on Google, I too can't find any information in English about it. Looking at the Turkish pages, I see "OXYDEZ (Dezenfektan)". Doesn't that mean "disinfectant"? Hope you're not applying disinfectant to your plants! That will kill them for sure.

Just watched a YouTube promo video for the oxydez product. I couldn't understand what was being said but it looked to be some type of commercial agricultural pesticide or fungicide. They were mixing the two bottles with water and applying it on a large scale using a commercial spray vehicle. Either way I would agree with the others recommendation to stop spraying this product.

Thank you so much for all of your help oxydez is a pH regulator for the soil. It also contains necessary vitamins.

So does anyone know whether pH regulators are harmful to eggplants or that specific vitamins could be harmful towards them? Again thank you so much to everyone who took the time to reply. It really means a lot that you take valuable time out of your busy schedules to help out a complete stranger! Best wishes and regards.

The issue here is what does ph regulation actually mean? All plants have different ph requirements and thus would need different "regulation". Is this product labeled for use with eggplant and vegetables? I dont think you will find anyone here that has any familiarity with that product. I would stop using it and see if that is the cause of your problems.

Yes, regulation sounds vague. A given product will either increase of decrease the soil pH. Unless you know your soil needs a correction and can reliably verify before and after values, I would not use the Oxydez again. I don't know how much of it was applied and how often, but it might now be worthwhile to check the soil pH and see if it's in a normal range so as to maximize chances of success for the next planting.

"pH regulation" is a term often used in hydroponics. So again I suspect this isn't something that would normally be used for gardening in soil since most soil is self-regulating when it comes to pH. As for "vitamins", also an unusual term when it comes to soil gardening. Perhaps they mean nutrients such as nitrogen, potassium, phosphorous, calcium, zinc, etc. which plants need but which are normally supplied by common fertilizers.

Have you used this product on any other crops? If so what was the result?

Lastly, just as in the US, manufacturers often make a bunch of claims about their product that often turn out to be untrue. So I'd switch to using some of your more common gardening fertilizers and put this stuff away.

Dave

Ok, so with everything being said about the products you are using, I figured I'd throw something else out there. There is a chance that there is something toxic a few inches under your earth. As in there could have been some pesticide applied at one point and it has manifested itself about 6 inches deep. At one month old, the roots hit that infected area, and poof your plants die. With all this being said, I'd say stop using that product and see what happens. You dont need to fix a problem that doesnt exist.

Reading through this thread, I see no mention of when - or how - the chemical was applied. It seems likely that there is a correlation between plant death & chemical application, especially if the chemical was always applied at the same stage of growth.

I concur with those who have suggested NOT using that product again. The simultaneous death of so many plants, over such a wide area, makes it unlikely that something in the soil is causing the die-off... in such a case, I would expect to see a more sporadic die-off, gradually spreading to all plants. It looks more like the result of herbicide poisoning.

There is also the possibility that this is the result of a blight; but since blight is usually triggered by weather, it would be highly unusual for the plants to be repeatedly attacked at the same stage of growth.

My recommendation would be to not only grow your eggplant without the Oxydez, but to replant them in a location where that product has never been used, if that is possible... and to use nothing on them. I expect, and hope, that you will have better results.

As a side note, Muhitten, that is a nice job of terracing on hilly terrain... very well done. I can understand your frustration, having a crop fail when you have put so much work into it.

Why? Why did you first add something?