Michael Jackson Syndrome ???
Can you post a picture.
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| Whats making my leaves turn white? http://byap.backyardmagazines.com/forum/viewtopic.php?f=1&t=2286 |
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| Author: | hawaiinewbie [ Oct 26th, '07, 12:05 ] |
| Post subject: | Whats making my leaves turn white? |
hey folks. I have some vegetables that the leaves are turning white. Its not anything growing on the leaves its the leaf actually turning white. Any ideas? |
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| Author: | RupertofOZ [ Oct 26th, '07, 12:16 ] |
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Michael Jackson Syndrome ???
Can you post a picture. |
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| Author: | hawaiinewbie [ Oct 26th, '07, 13:20 ] | |||
| Post subject: | Re: Whats making my leaves turn white? | |||
hehe, I thought I heard someone singing I'm bad. Here's the pics, my camera is broken so I had to use the camera on my mac so they suck but I think they show the gist of the problem. The vegetable is mizuna, a japanese leafy veggie. The white spots are also on the chinese parsley. Mostly afecting the mizuna.
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| Author: | RupertofOZ [ Oct 26th, '07, 13:40 ] |
| Post subject: | Re: Whats making my leaves turn white? |
I'm leaning toward Magnesium deficiency HB..... Quote: Magnesium deficiencies show first in older, lower leaves. The symptoms start from the margin inwards. The leaf mid-rib and veins remain green while leaf margins are yellow or whitish....
Excess magnesium interferes with calcium and potassium uptake. Plants use magnesium to: produce chlorophyll; regulate enzymes for transport of nutrients and carbohydrates in the plant; cell replication; seed production. Magnesium is an important co-factor in production of ATP, the compound that helps plants transfer energy. It is also a bridge between ATP and enzyme activity. Flowering and fruiting plants use more and more magnesium as they progress towards maturation and harvest. Magnesium helps plants generate energy through photosynthesis and is also crucial to protein synthesis. Are you "fertlising" your system with any additives.... An over fertilisation of magnesium can become toxic, preventing calcium and [s]phosphorus [/s] potassium from being absorbed.... Calcium is essential for cell wall strength and potassium generally results in lusher leaf growth and is critical for flower set and fruit development.... So all in all.... I'd say a deficiency..... Some of the permaculture people might be able to confirm? |
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| Author: | RupertofOZ [ Oct 26th, '07, 13:42 ] |
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This link looks similar.... and lists a treatment... http://www.rhs.org.uk/advice/profiles0701/magnesium.asp |
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| Author: | hawaiinewbie [ Oct 26th, '07, 14:20 ] |
| Post subject: | Re: Whats making my leaves turn white? |
Rupert man thanks!! I think that sounds right. Now here are some questions for yall out there. Is calcium magnesium bicarbonate or epsom salts bad for the fish? I guess if I spray the salts on and be careful it can;t be all that bad for the fish. What do you guys think? Rupert to answer your question. I have only been fertilizing with chelated iron. Thats all. Do you suggest anything else? Thanks a ton!! |
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| Author: | hawaiinewbie [ Oct 26th, '07, 14:35 ] |
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after reading some more it might be potassium deficiencies. Is there a product that can add several of the nutrients all at once? |
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| Author: | Jaymie [ Oct 26th, '07, 14:41 ] |
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some of us here have used MinPlus, which is pulverised volcanic rock. Maybe you can find something similar? http://www.minplus.com.au/ingredients/index.html |
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| Author: | RupertofOZ [ Oct 26th, '07, 14:46 ] |
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Think the Epsom Salts are fine.... just add a bit at a time.... also affects GH and possibly pH though... http://backyardaquaponics.com/forum/vie ... =3717#3717 Can't see that calcium magnesium bicarbonate would be a problem either... same thing ... will buffer your pH to some extent.... |
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| Author: | TimC [ Oct 26th, '07, 16:15 ] |
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Pure epsom salts are perfectly fine. Been using to increase hardness in aquariums for years.... |
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| Author: | RupertofOZ [ Oct 26th, '07, 16:21 ] |
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Liquid seaweed extracts like "Seasol" would probably help as well |
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| Author: | RupertofOZ [ Oct 26th, '07, 16:26 ] |
| Post subject: | Re: Whats making my leaves turn white? |
Quote: Excess magnesium interferes with calcium and potassium uptake.
Mistakenly wrote phosphorus instead of potassium in the other post (edited)....... Could be a contributing factor HN... there's a chart been posted several times as to the optimal pH and the effect of pH on mineral salt uptake.... Any of the solutions proposed will help over the longer term.... Epsom Salts might be the quick remedy to address the immediate problem.... |
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| Author: | steve [ Oct 26th, '07, 17:24 ] |
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sure its not a mildew or fungus? is it powdery and dry feeling? |
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| Author: | hawaiinewbie [ Oct 27th, '07, 02:20 ] |
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no I tried rubbing it off. Nothing growing on top of the leaf, its actually the leaf. |
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| Author: | hawaiinewbie [ Oct 27th, '07, 04:00 ] |
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Ok so I went to the store today. I bought this stuff called Dr. Earth. Its a liquid fertilizer (Nitrogen) and it also has potash, magnesium, copper, iron, manganese, molybdenum, and zinc. Has anyone tried this or a similar substance? Big questions is: is it safe for the fish? what do you guys think? Thanks for all the help folks!! |
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