Light green mottling away from veins?

emcd124 · July 9, 2013

I've tried going through the links, but some of the demo pictures are so small I cant make a positive identification. I *think* this problem is related to nutrients rather than disease or pests based on how it looks.

It is only affecting one plant (Gold Medal) that is planted in-ground in a section between my raised beds that was heavily amended with compost when the beds were put in, but is otherwise ground soil. It is quite near the Arborvitae (which I hate, but they came with the house), which have very shallow roots that may compete for nutrients. I had the raised bed soil tested last year and it came back very high across the board in all nutrients and micros. I didnt specifically test the in-ground portion of the garden that is just compost on top of ground soil, so I would only be guessing. I do know however that both the raised bed soil and the lawn turf (which is whats under the compost layer) had a pH of 7.5 so it is reasonable to assume that this patch of garden also has an alkaline pH, if that matters.

Does anyone recognize this pattern as indicating a deficiency? or possibly TOO MUCH of a nutrient causing a problem?

NarnianGarden · July 9, 2013

I only know that my plants that were exposed to full sunshine got black/lilac spots on their leaves and stems. That was due to heat, and was a sign of some sort of nutrient deficiency (phosphorus, most likely), The heat messed things up, and the suffering plant could not utilize the nutrients.

After the heat wave things went back to normal. Now we have had a second heat wave, and the leaves and stems started to suffer again.
Not sure if your situation was a similar one, but my guess is enviromental stress of some kind.

Heritage · July 11, 2013

Quote:

Originally Posted by emcd124

Does anyone recognize this pattern as indicating a deficiency? or possibly TOO MUCH of a nutrient causing a problem?

emcd124, what does the new growth look like on this plant? Also, do you see any leaf distortion, especially any general leaf "puckering", or a 'frilly', ruffled look on the edges of the leaves?

Also, for how long have you seen the mottling?

Steve

July 9, 2013	#1
emcd124 Tomatovillian™ Join Date: Feb 2013 Location: South Bend, IN Posts: 104	Light green mottling away from veins? I've tried going through the links, but some of the demo pictures are so small I cant make a positive identification. I think this problem is related to nutrients rather than disease or pests based on how it looks. It is only affecting one plant (Gold Medal) that is planted in-ground in a section between my raised beds that was heavily amended with compost when the beds were put in, but is otherwise ground soil. It is quite near the Arborvitae (which I hate, but they came with the house), which have very shallow roots that may compete for nutrients. I had the raised bed soil tested last year and it came back very high across the board in all nutrients and micros. I didnt specifically test the in-ground portion of the garden that is just compost on top of ground soil, so I would only be guessing. I do know however that both the raised bed soil and the lawn turf (which is whats under the compost layer) had a pH of 7.5 so it is reasonable to assume that this patch of garden also has an alkaline pH, if that matters. Does anyone recognize this pattern as indicating a deficiency? or possibly TOO MUCH of a nutrient causing a problem?

July 9, 2013	#2
NarnianGarden Tomatovillian™ Join Date: Jun 2013 Location: Finland, EU Posts: 2,550	I only know that my plants that were exposed to full sunshine got black/lilac spots on their leaves and stems. That was due to heat, and was a sign of some sort of nutrient deficiency (phosphorus, most likely), The heat messed things up, and the suffering plant could not utilize the nutrients. After the heat wave things went back to normal. Now we have had a second heat wave, and the leaves and stems started to suffer again. Not sure if your situation was a similar one, but my guess is enviromental stress of some kind.