lol, that's what i was thinking.. i've yet to get a plant to get burnt from water droplets on the leaves.. i tend to think it's one of those wives tales.. when it rains and the sun comes out, do plants outdoors get burnt where the droplets of rain were?? of course not..
it looks like it's a nitrogen defeciency to me m8.. feed them with a light dose of some vegetive nutes and see if they come around..
sometimes they leaves that are already affected won't correct themselves, so keep an eye on the new growth and make sure it's coming in nice and green..
i like to foliar feed with some worm casting tea that i make up by adding a few tbsp's to a gallon of water of worm castings, and i let it aerate for about 24 hours with an old airline i had laying around with an old fish pump, and i'll then use this as a foliar feed.. the plants love it and it really seems to keep them nice and lush and green..
Dude listen, I see you have 9000 posts and some signature I guess I should envy - but really, you're wrong.
A wives tale? Have you taken a simple introduction to botany class at any college or trade school? Or even read a book on the subject?
It is a PROVEN FACT, in EVERY book of gardening ANY type of plant, that when water beads on the foliage and hits the high intensity light of 11-2pm sun light, it causes magnified rays of the sun to shine through the water and heat up / dry up the foliage that its on. Mind you, 1 droplet will most likely dry out and evaporate before this happens, but if you have a tiny cluster of droplets then the magnification will happen because the leaf wont have time to dry.
I dont just speak from botany experience, my experience as a gardener, or from reading books - I speak from my experience of losing my entire first crop years ago due to watering during the day. Before I knew anything to do with plant life I thought it would be nice to "cool the plants down" during a hot day by misting the hose all over them until they were nice and wet - came back 2 hours later to an entire crop of dead dried up Northern Lights that took about 200 bucks outta my pocket. I also wasnt giving them nutes, I wasnt fucking with them in any sort of way - the soil i planted them in was freshly tilled and there shouldnt have been any problems.
You have to think of it this way, when you put water on your own hands and then say dry them under one of those bathroom blow dryer things. When your hands finish drying, your skin is "rough dry" and over time the natural oils will return and your hands will become softer again.. Its just like a foliage of a plant. If you wet the foliage, the dry it quickly - the foliage will lose all of its moisture, aka killing the leaf because a plant cant just force moisture back into a shriveled leaf.
PS: As for your wives tale comment, you need to read a book man because so much misinformation is flooding through this site whether its intentional or just because you guys were also misinformed idk - but trust me bud this is a proven fact of plant life, you dont spray your plants down during the day - they will die - and if they dont die? As you can see above, many of the foliage will die and set the plant back WEEKS in growth.
Also, if you read any books or looked at any issues having to do with nitrogen def - your leaves dont get rippled yellow spots starting from the middle of the leaf going outward - it is usually a symmetrical pattern going around the EXTERIOR of the leave which will cause the EXTERIOR EDGES of the leaves to yellow, curl, then brown.
God, Ech, some people... lol..
If you dont know for sure, dont try to help somebody - you only make shit worse. Wives tale. lol.... A wives tale solidified by every professonal botanist on earth....