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Tomato leaves turning yellow????

Gardening Reference » Gardening in 2005
by catlover on April 21, 2005 05:20 PM
Someone has an email question and I thought you all might be able to help.

Why are my tomato plant leaves turning yellow? [dunno]

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by Longy on April 21, 2005 07:38 PM
Depends on which leaves. The older leaves or newer leaves. If it's from the base of the plant it may be wilt. If it's the new leaves it may be a nitrogen deficiency and if it's the whole plant it may be a potassium or magnesium deficiency. It may be a lack of iron or it could be that the above nutrients are there but the Ph of the soil is too low or high for the plant to access the required nutrients.
Therefore, i would first recommend a Ph test, then, if the Ph is OK. IE between 6-7, have a look at these pictures for more info.
http://www.plantphys.net/article.php?ch=t&id=289

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