what deficiency is causing this leaf curl?

NewEnglandFarmer

Well-Known Member
Fist time seeing this...I'm guessing it's a nutrient deficiency of some sort but not sure. 2 out of 15 plants showing this--all Cherry Wines, in same soil and with same amendments/watering. The others are thriving.

Anybody know what particular nutrient she's asking for? Don't want to throw the kitchen sink at her.

leaf-curl3.jpg


leaf-curl2.jpg

leaf-curl.jpg
 

bam0813

Well-Known Member
That just looks like heat stress to me but some of the glossy blistery looking leaves has me wondering about mites
 

SidV

Well-Known Member
As bam said it looks like heat stress, if they get worse and begin to look like burritos then I would say probably a root problem. Plants are a little limey you may want to give a little Epson salt and a shot of nitrogen.
 

SidV

Well-Known Member
Agree look alittle light but even,wasnt sure if it was the strain
Bam makes a very good point, I jumped to nitrogen because of your color but could be the strain.

If you can green them up, it will make a world of difference when you begin to flower.
 

NewEnglandFarmer

Well-Known Member
Thanks everyone.

I wondered about heat stress too except none of the others (same strain) are showing leaf canoeing and they're all in the same location.

Also agree the color looks a tad light, although not so much in photo #2. Before transplanting I amended the soil based on a lab test, including adding some feather meal for nitrogen and k-mag for magnesium. But it's possible they need more--they've been in the ground over a month now so I topdressed yesterday with more feather meal, plus some alfalfa meal and worm castings too. And added 1T/gallon Epsom salts to their water yesterday.

One thing that makes me think it might be a deficiency is that some of the upper leaves seem like the veins are dark green but the spaces in between are lighter. That combined with the leaf curl makes me suspect a mineral deficiency. Plus I'm not aware that a nitrogen deficiency would cause the leaves to canoe like that.

As far as mites, I'm not seeing any signs but then again I've never had to deal with mites before. I'll check the undersides of the leaves again, it's possible I'm missing something.

I had an Orange Blossom Special that had crinkly leaves last year, never fully solved that, but it thrived and produced beautiful buds. Maybe genetics are partly at work here?

But I'd love to solve this before flowering begins. Figure I've got another 4 weeks maybe...
 

myke

Well-Known Member
Crinkly leaves ive found to be just too hot of soil,perhaps too much compost or not quite fully broken down yet.Or too much alfalfa or another hot ingredient.
 

myke

Well-Known Member
I think the epsom you added will help a lot,you can see a slight Mg deficiency in the one photo,hard to tell.
 

bam0813

Well-Known Member
Different plants of same strain even in the same locations and conditions can react and cope differently imo
 

NewEnglandFarmer

Well-Known Member
Crinkly leaves ive found to be just too hot of soil,perhaps too much compost or not quite fully broken down yet.Or too much alfalfa or another hot ingredient.
Possible, although the compost I added was a year old and I measured the amendments carefully based on the soil test recommendations.
 

NewEnglandFarmer

Well-Known Member
I think the epsom you added will help a lot,you can see a slight Mg deficiency in the one photo,hard to tell.
That's my gut sense, she needs Mg or Ca possibly. But I'm still fairly new to this so not super experienced reading the symptoms.
 

myke

Well-Known Member
And hey 2 out of 15 is pretty good,their female,one or two always bitch and complain lol.
 

lusidghost

Well-Known Member
Hang some shade cloth over her see if she responds.Some like it hot,some dont.
Not to highjack this thread, but I have a light that doesn't have a dimmer switch and it's too powerful for my vegging plants. Installing one seems to be a pain, so I was wondering about a shade cloth. Do you think one would work with a LED light as opposed to the sun? I know nothing about outdoor growing.
 
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